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yellow · warm

#a18721

a dark, vivid yellow · warm · closest name: Dark Goldenrod

Token name suggestion: Shadow Brass

RGB
161, 135, 33
HSL
48°, 66%, 38%
CMYK
0, 16, 80, 37
Luminance
0.2501

#a18721 is a dark vivid yellow, 48° on the wheel and 15/100 on the cool side. Put black text on it (6.00:1). As text it scores 3.50:1 on white — large text only. Nearest name is Dark Goldenrod, nearest Tailwind family is yellow.

hsl(48 66% 38%)rgb(161 135 33)Base step 700AA inkWarm

At a glance

Every number on this page in one read: what #a18721 is made of, how bright it looks, and which way it leans.

Hex
#a18721
Hue
48°
yellow
Saturation
66%
vivid
Lightness
38%
dark
Brightness
63%
HSV value
Perceived
53%
weighted brightness
Luminance
0.2501
WCAG relative
Temperature
Warm
15/100 cool
Color family
Yellow
Tone
Vivid
Best ink
Black
6.00:1
Closest name
Dark Goldenrod
ΔE2000 7.2
Chroma
54.3
LCH, 0–130ish
OKLCH L
0.630
perceptual lightness
Tailwind
yellow
500 · ΔE 16.9
Web-safe
#999933
nearest of 216
Where it sits
Hue48° of 360°
Saturation66%
Lightness38%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #a18721.

Temperature
Warm ← → Cool15% cool

Reads warm. Warm and cool siblings keep the same lightness, so you can swap one in without redoing your contrast maths.

Luminance by channel
Red30%
Green69%
Blue0%

Green carries most of what the eye calls brightness — that is why WCAG weights it 0.7152.

Every format

HEX#a18721
HEX (8-digit)#a18721ff
RGBrgb(161, 135, 33)
RGBArgba(161, 135, 33, 1)
HSLhsl(48, 66%, 38%)
HSV / HSBhsv(48, 80%, 63%)
HWBhwb(48 13% 37%)
CMYKcmyk(0%, 16%, 80%, 37%)
LABlab(57.1 -0.6 54.3)
LCHlch(57.1 54.3 90.7)
OKLCHoklch(0.630 0.118 93.8)
XYZ (D65)xyz(23.64, 25.02, 5.02)
Decimal10585889
Display P3color(display-p3 0.631 0.529 0.129)
Web-safe#999933

Copy-ready code

every platformclick to select
/* CSS */
color: #a18721;
background-color: #a18721;
/* CSS custom property */
--brand: #a18721;
/* Tailwind (arbitrary) */
class="text-[#a18721] bg-[#a18721]"
/* SCSS */
$brand: #a18721;
/* SwiftUI */
Color(red: 0.631, green: 0.529, blue: 0.129)
/* UIKit */
UIColor(red: 0.631, green: 0.529, blue: 0.129, alpha: 1)
/* Android XML */
<color name="brand">#A18721</color>
/* Android Compose */
Color(0xFFA18721)
/* Flutter */
Color(0xFFA18721)
/* Python / OpenCV (BGR) */
(33, 135, 161)
/* Python / PIL (RGB) */
(161, 135, 33)
/* Java AWT */
new Color(161, 135, 33)
/* .NET */
Color.FromArgb(255, 161, 135, 33)
/* OpenGL / Unity (0–1) */
(0.6314f, 0.5294f, 0.1294f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{161,135,33}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #a18721 85%, white);
border-color: color-mix(in oklab, #a18721 40%, transparent);
/* theme-aware in one line */
color: light-dark(#6A5916, #EEE9D3);
/* relative colour syntax */
--hover: hsl(from #a18721 h s calc(l - 7));

Design tokens

The same ramp in the four formats a team actually needs. Paste one and the whole palette lands with it.

css custom propertiesclick to select
:root {
  --brand-50: #FBFAF3;
  --brand-100: #F8F4E8;
  --brand-200: #F1E9CB;
  --brand-300: #ECDDA2;
  --brand-400: #E2CC73;
  --brand-500: #D9BB45;
  --brand-600: #CBAA2A;
  --brand-700: #a18721;
  --brand-800: #87721C;
  --brand-900: #625318;
  --brand-950: #3D340F;
  --brand: #a18721;
  --brand-ink: #000000;
  --brand-surface: #FAF9F4;
  --brand-border: #EDE4C0;
  --brand-hover: #836E1B;
  --brand-pressed: #665515;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #242114;
    --brand-ink: #EEE9D3;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#FBFAF3',
        100: '#F8F4E8',
        200: '#F1E9CB',
        300: '#ECDDA2',
        400: '#E2CC73',
        500: '#D9BB45',
        600: '#CBAA2A',
        700: '#a18721',
        800: '#87721C',
        900: '#625318',
        950: '#3D340F',
        DEFAULT: '#a18721',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #FBFAF3,
  '100': #F8F4E8,
  '200': #F1E9CB,
  '300': #ECDDA2,
  '400': #E2CC73,
  '500': #D9BB45,
  '600': #CBAA2A,
  '700': #a18721,
  '800': #87721C,
  '900': #625318,
  '950': #3D340F,
);
$brand-base: #a18721;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#FBFAF3", "$type": "color" },
      "100": { "$value": "#F8F4E8", "$type": "color" },
      "200": { "$value": "#F1E9CB", "$type": "color" },
      "300": { "$value": "#ECDDA2", "$type": "color" },
      "400": { "$value": "#E2CC73", "$type": "color" },
      "500": { "$value": "#D9BB45", "$type": "color" },
      "600": { "$value": "#CBAA2A", "$type": "color" },
      "700": { "$value": "#a18721", "$type": "color" },
      "800": { "$value": "#87721C", "$type": "color" },
      "900": { "$value": "#625318", "$type": "color" },
      "950": { "$value": "#3D340F", "$type": "color" }
    },
    "brandInk": { "$value": "#000000", "$type": "color" }
  }
}

Best text color

Only one of black and white can be right. This is the one, with the number that proves it.

Readable at a glance#000000 on #a18721 · 6.00:1
Use #000000AA at every size, AAA for large text only.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 3.50:1
AA fail · AA large pass · AAA fail
Aa
Black text · 6.00:1 · recommended
AA pass · AA large pass · AAA fail
Reading the other direction: #a18721 as text scores 3.50:1 on white and 6.00:1 on black.
Best tinted ink on it, if plain black or white feels flat: #6A5916 at 1.97:1.

Make it accessible

A contrast checker tells you that you failed. This tells you what to ship instead — same hue, same saturation, lightness moved only as far as WCAG demands.

The quick fox
#87721C · 4.71:1
AA on white−6% L
#87721C
The quick fox
#665515 · 7.30:1
AAA on white−14% L
#665515
The quick fox
#a18721 · 6.00:1
AA on blackalready passes
#a18721
The quick fox
#B29524 · 7.22:1
AAA on black+4% L
#B29524

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #A18721 is enough for headings on white. Non-text elements such as icons, chart strokes and focus rings also sit at 3:1 under WCAG 2.2 (1.4.11).

Accessibility — WCAG contrast

Aa
#a18721 on white: 3.50:1
AA ✗ fail · AA-large · AAA
Aa
#a18721 on black: 6.00:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #a18721 as text on that neutral, and that neutral as text on #a18721.

NeutralRatioBoth directions
White3.50:1AaAa
Slate 503.34:1AaAa
Slate 1003.19:1AaAa
Slate 2002.84:1AaAa
Slate 3002.36:1AaAa
Slate 4001.36:1AaAa
Slate 5001.36:1AaAa
Slate 6002.17:1AaAa
Slate 7002.96:1AaAa
Slate 8004.18:1AaAa
Slate 9005.10:1AaAa
Black6.00:1AaAa
Colour vision deficiency
true color
protanopia · #96850A
deuteranopia · #9D8C28
tritanopia · #AF7C74

Roughly one man in twelve has some form of colour vision deficiency. If any of the three panels above is hard to tell apart from a neighbouring colour in your palette, add a shape, an icon or a label so the meaning does not rest on hue alone.

Color scale — 50 to 950

A Tailwind-shaped ramp built around this exact hex. #a18721 is pinned to step 700; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#FBFAF3
#F8F4E8
#F1E9CB
#ECDDA2
#E2CC73
#D9BB45
#CBAA2A
#a18721
#87721C
#625318
#3D340F
Base = 700Lightest = 50 · #FBFAF3Darkest = 950 · #3D340FText step on white = 800
Perceptual ramp — OKLCH

The same eleven steps expressed in OKLCH, where equal lightness numbers actually look equally spaced. HSL ramps go muddy in the yellows and washed out in the blues; this one does not. Modern browsers render it natively — the hex ramp above is the fallback.

50100200300400500600700800900950
oklch tokensclick to select
:root {
  --brand-50: oklch(0.97 0.030 93.8);
  --brand-100: oklch(0.94 0.047 93.8);
  --brand-200: oklch(0.88 0.071 93.8);
  --brand-300: oklch(0.80 0.092 93.8);
  --brand-400: oklch(0.72 0.109 93.8);
  --brand-500: oklch(0.64 0.118 93.8);
  --brand-600: oklch(0.56 0.118 93.8);
  --brand-700: oklch(0.48 0.111 93.8);
  --brand-800: oklch(0.40 0.099 93.8);
  --brand-900: oklch(0.32 0.083 93.8);
  --brand-950: oklch(0.24 0.065 93.8);
}

Colors that work with #a18721

Not a palette — a role sheet. Each swatch answers one question you will hit while building the component.

Text on it#000000
Black wins here
Surface#FAF9F4
Tinted page background
Border#EDE4C0
Hairlines and dividers
Muted text#9B8B4B
Captions on the surface
Accent#1D5BA5
Second voice, not a rival
Dark variant#6A5916
Hover, pressed, headers
Light variant#FBF7EA
Selected rows, tints
Dark surface#242114
Dark-mode background
Hover#836E1B
One step down in lightness
Pressed#665515
Two steps down
Disabled#AFA683
Chroma pulled out
Focus ring#BC9B1A
Offset from the fill so it reads
Light mode
Everything in its place

Surface, border, heading and body all derive from this one hue, so the screen stays coherent without a second palette.

Primary actionSecondaryBadge
Dark mode
Same hue, inverted

Lightness flips, hue holds. The accent stays the anchor in both themes.

Primary actionSecondaryAccent

In real components

The same eight roles, wired into the interface patterns you will actually build with them. Every state below is a computed value, not a mock-up.

Buttons and states
Save changesHoverPressedDisabled
OutlineSubtleLinkFocused
Form field
you@company.com

Focus ring uses the light variant so the field still reads as one shape.

Send me product updates
Notice
Your export is ready

The file stays available for seven days. Download it before it expires.

NewBetaDraft
Data
Storage used68%
Acme LtdActive
NorthwindTrial
GlobexActive

How to use #a18721

Derived from its contrast, chroma and lightness — not from taste.

Works well for
  • Headings from 24px up on white
  • Text and icons on dark surfaces
  • Primary buttons and calls to action
  • Focus rings, active and selected states
  • Headers, footers and dark-mode surfaces
  • Brand accents, badges and data highlights
Use with care
  • Small text on white — under 4.5:1
  • Full-page backgrounds — tiring over long sessions
  • Black text placed on it
  • Thin strokes and 1px borders — they disappear on light UI
  • Pairing with a same-lightness hue — edges vibrate
Minimum size as text on white
24px / 18.66px bold
Safe as a fill behind white type
No — use #6A5916
Safe as a 1px border on white
Yes

Meaning and mood

What a colour in this family tends to signal, and how this particular chroma and lightness change the reading.

optimisticalertcheap-and-cheerfulvisible

The most visible hue at low light levels, which is why it owns warnings, hazard tape and value retail.

This is a confident chroma: strong enough to lead a brand, restrained enough to live in an interface all day. The low lightness adds weight and formality.

Worth knowing

Almost never passes contrast against white. Treat it as a surface or a marker, not as text.

Reads as
  • FormalityHigh
  • EnergyMedium-high
  • Weight62/100
  • TemperatureWarm
  • ApproachabilityHigh

Colour associations are cultural and vary by market. Treat these as a starting point for a conversation with your audience, not a finding about them.

Similar colors

One move away from this hex in each direction. Every swatch is its own page.

Color relationships

The wheel positions with their names attached, so you can grab the one you actually need.

Complementary#213BA1
Analogous left#A14721
Analogous right#7BA121
Split-complement 1#217BA1
Split-complement 2#4721A1
Triadic 1#21A187
Triadic 2#8721A1
Tetradic#21A147
On the wheel
Base+30°−30°+120°+240°+180°48°

#a18721 sits at 48°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red63.1%
Green52.9%
Blue12.9%
R · 0–255
161
0xa1
G · 0–255
135
0x87
B · 0–255
33
0x21

CMYK percentages

Cyan0.0%
Magenta16.1%
Yellow79.5%
Key (black)36.9%

Total ink coverage is 133%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#a18721 text on a black background

contrast 6.00:1

Card sample

#a18721 text on a white background

contrast 3.50:1

Card sample

#a18721 on grey

3.19:1

#a18721 on its own surface

3.32:1

#a18721 on its dark surface

4.61:1

CSS3 live lab

Text font color

The quick brown fox

color: #a18721;
Background color
Panel with #a18721 background
background-color: #a18721;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #a18721;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(161, 135, 33, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(161, 135, 33, 0.45);
Border & gradient
Gradient panel
border: 3px solid #a18721;
background: linear-gradient(135deg, #a18721, #66A121);
Gradient text

Gradient headline

background: linear-gradient(90deg, #a18721, #46A121);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #a18721;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #a18721;
caret-color: #a18721;
Left rule
Pull quote or callout
border-left: 4px solid #a18721;
Ring + tint
Selected chip
background: #FBF7EA;
box-shadow: inset 0 0 0 2px #a18721;
Conic badge
68%
background: conic-gradient(#a18721 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #a18721 over white; the bottom row is the same alpha over a checkerboard, so you can see what survives on a photo or a video.

Bottom row of hexes is the flattened result over white — use those when a design tool refuses transparency, or when you need a solid fallback.

alpha in every syntaxclick to select
rgba(161, 135, 33, 0.5)
rgb(161 135 33 / 50%)
#a1872180
hsl(48 66% 38% / 50%)
color-mix(in srgb, #a18721 50%, transparent)
Alpha8-digit hexFlat on white
10%#a187211a#F6F3E9
20%#a1872133#ECE7D3
40%#a1872166#D9CFA6
60%#a1872199#C7B77A
80%#a18721cc#B49F4D

Gradients from #a18721

Six recipes, each built from this hex and shown with the exact CSS that produced it.

Elevation
Same hue, three lightnesses — safe anywhere
background: linear-gradient(135deg, #D4B12B, #a18721 45%, #6A5916);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #a18721, #4D871C);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #a18721, #213BA1);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #D9BB45 0%, #a18721 45%, #6A5916 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #FAF9F4, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #CB4C2A 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #82BA26 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #6A5916 0%, transparent 65%), #a18721;

Monochromatic scale

Palettes built from #a18721

Shades — darker

Tints — lighter

Tones — desaturated

Color harmonies

Nearest named colors

Ranked with CIEDE2000 across all 139 CSS keywords. Under ΔE 2 the eye stops telling them apart; over ΔE 10 they are plainly different colors.

#a18721 in the real world

Where a color in this family tends to land, and the interface roles it is usually asked to play.

Industries
RetailLeisureEnergyWarning systems
Common UI roles
ButtonsLinksFocus statesCharts
Print note

Converts to four-color process without much drama. Proof it anyway.

On screens

Holds up across typical panel gamma. Still worth checking on an uncalibrated laptop, where mid-tones shift most.

In dark mode

Usable as-is on a dark surface at 6.00:1.

Explore nearby colors

Small, deliberate steps away from this hex — useful when you are hunting for the version of a colour that finally feels right.

#a18721, answered

What color is #a18721?

#a18721 is a dark vivid yellow, closest to Dark Goldenrod (ΔE2000 7.2). It sits at 48° on the hue wheel with 66% saturation and 38% lightness, which reads as warm.

What is the RGB value of #a18721?

rgb(161, 135, 33) — 161 red, 135 green and 33 blue out of 255, or 63.1% / 52.9% / 12.9% by channel.

What is #a18721 in HSL and HSV?

hsl(48, 66%, 38%) and hsv(48, 80%, 63%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #a18721 a light or a dark color?

It is a mid-tone. Relative luminance is 0.2501 and perceived brightness is 53%, so black text on it reaches 6.00:1.

Should I use black or white text on #a18721?

Black. It scores 6.00:1 against #a18721, versus 3.50:1 for white — AA at any size.

Is #a18721 accessible on a white background?

#a18721 on white scores 3.50:1, which only clears AA for large text — 18.66px bold or 24px regular and up. Darken it to #87721C to reach 4.5:1, or #665515 for 7:1.

What is the complementary color of #a18721?

#213BA1 sits directly opposite on the wheel. Softer options are the split-complements #217BA1 and #4721A1, which give the same contrast with far less vibration.

What colors go well with #a18721?

For interface work: #FAF9F4 as the surface, #EDE4C0 for borders, #9B8B4B for secondary text, #1D5BA5 as an accent and #6A5916 for hover and pressed states. For a palette, the analogous pair #A14721 and #7BA121 stays calm, while #213BA1 is the loudest partner.

What is #a18721 in CMYK for printing?

cmyk(0%, 16%, 80%, 37%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #a18721 warm or cool?

Warm — it scores 15 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #A16821; nudged cooler, #8DA31F.

Which Tailwind color is closest to #a18721?

The yellow family — its 500 step is #eab308, ΔE2000 16.9 away. That is a visible difference, so define #a18721 as a custom token rather than reaching for the built-in.

How do I use #a18721 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#a18721] or text-[#a18721], or register the whole ramp under theme.extend.colors.brand so you get bg-brand-500 and friends. The generated 50–950 scale on this page is ready to paste into your config.

What is #a18721 with 50% opacity?

rgba(161, 135, 33, 0.5), or #a1872180 in eight-digit hex. Over white that composites to #D0C390; over black, #514411.

Is #a18721 a web-safe color?

No. The nearest web-safe colour is #999933, ΔE2000 9.1 away. The palette only matters for legacy displays and some email clients now.

What does the color #a18721 mean?

As a yellow, it reads optimistic, alert, cheap-and-cheerful. The most visible hue at low light levels, which is why it owns warnings, hazard tape and value retail. At this chroma the effect is amplified — it will dominate whatever sits beside it.

What gradient works with #a18721?

The safest is same-hue elevation: linear-gradient(135deg, #D4B12B, #a18721 45%, #6A5916). For more colour, a short hue run to #4D871C keeps it rich without turning muddy.

Work with #a18721 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #a18721 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.