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yellow · warm

#acaf63

a balanced, soft yellow · warm · closest name: Dark Khaki

Token name suggestion: Atlas Brass

RGB
172, 175, 99
HSL
62°, 32%, 54%
CMYK
2, 0, 43, 31
Luminance
0.4033

#acaf63 is a balanced soft yellow, 62° on the wheel and 29/100 on the cool side. Put black text on it (9.07:1). As text it scores 2.32:1 on white — use #76783E instead. Nearest name is Dark Khaki, nearest Tailwind family is lime.

hsl(62 32% 54%)rgb(172 175 99)Base step 500AAA inkWarm

At a glance

Every number on this page in one read: what #acaf63 is made of, how bright it looks, and which way it leans.

Hex
#acaf63
Hue
62°
yellow
Saturation
32%
soft
Lightness
54%
balanced
Brightness
69%
HSV value
Perceived
66%
weighted brightness
Luminance
0.4033
WCAG relative
Temperature
Warm
29/100 cool
Color family
Yellow
Tone
Soft
Best ink
Black
9.07:1
Closest name
Dark Khaki
ΔE2000 3.8
Chroma
40.4
LCH, 0–130ish
OKLCH L
0.735
perceptual lightness
Tailwind
lime
500 · ΔE 14.8
Web-safe
#999966
nearest of 216
Where it sits
Hue62° of 360°
Saturation32%
Lightness54%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #acaf63.

Temperature
Warm ← → Cool29% 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
Red22%
Green76%
Blue2%

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

Every format

HEX#acaf63
HEX (8-digit)#acaf63ff
RGBrgb(172, 175, 99)
RGBArgba(172, 175, 99, 1)
HSLhsl(62, 32%, 54%)
HSV / HSBhsv(62, 43%, 69%)
HWBhwb(62 39% 31%)
CMYKcmyk(2%, 0%, 43%, 31%)
LABlab(69.7 -12.4 38.5)
LCHlch(69.7 40.4 107.9)
OKLCHoklch(0.735 0.099 110.6)
XYZ (D65)xyz(34.60, 40.33, 17.76)
Decimal11317091
Display P3color(display-p3 0.675 0.686 0.388)
Web-safe#999966

Copy-ready code

every platformclick to select
/* CSS */
color: #acaf63;
background-color: #acaf63;
/* CSS custom property */
--brand: #acaf63;
/* Tailwind (arbitrary) */
class="text-[#acaf63] bg-[#acaf63]"
/* SCSS */
$brand: #acaf63;
/* SwiftUI */
Color(red: 0.675, green: 0.686, blue: 0.388)
/* UIKit */
UIColor(red: 0.675, green: 0.686, blue: 0.388, alpha: 1)
/* Android XML */
<color name="brand">#ACAF63</color>
/* Android Compose */
Color(0xFFACAF63)
/* Flutter */
Color(0xFFACAF63)
/* Python / OpenCV (BGR) */
(99, 175, 172)
/* Python / PIL (RGB) */
(172, 175, 99)
/* Java AWT */
new Color(172, 175, 99)
/* .NET */
Color.FromArgb(255, 172, 175, 99)
/* OpenGL / Unity (0–1) */
(0.6745f, 0.6863f, 0.3882f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{172,175,99}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #acaf63 85%, white);
border-color: color-mix(in oklab, #acaf63 40%, transparent);
/* theme-aware in one line */
color: light-dark(#53542B, #E9EAD7);
/* relative colour syntax */
--hover: hsl(from #acaf63 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: #F9F9F5;
  --brand-100: #F3F4EC;
  --brand-200: #E6E7D4;
  --brand-300: #D8D9B5;
  --brand-400: #C4C690;
  --brand-500: #acaf63;
  --brand-600: #9FA253;
  --brand-700: #848745;
  --brand-800: #6A6C37;
  --brand-900: #4E4F2B;
  --brand-950: #31321B;
  --brand: #acaf63;
  --brand-ink: #000000;
  --brand-surface: #FAFAF5;
  --brand-border: #E2E3C9;
  --brand-hover: #9A9D51;
  --brand-pressed: #838645;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #242414;
    --brand-ink: #E9EAD7;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#F9F9F5',
        100: '#F3F4EC',
        200: '#E6E7D4',
        300: '#D8D9B5',
        400: '#C4C690',
        500: '#acaf63',
        600: '#9FA253',
        700: '#848745',
        800: '#6A6C37',
        900: '#4E4F2B',
        950: '#31321B',
        DEFAULT: '#acaf63',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #F9F9F5,
  '100': #F3F4EC,
  '200': #E6E7D4,
  '300': #D8D9B5,
  '400': #C4C690,
  '500': #acaf63,
  '600': #9FA253,
  '700': #848745,
  '800': #6A6C37,
  '900': #4E4F2B,
  '950': #31321B,
);
$brand-base: #acaf63;
$brand-ink: #000000;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#F9F9F5", "$type": "color" },
      "100": { "$value": "#F3F4EC", "$type": "color" },
      "200": { "$value": "#E6E7D4", "$type": "color" },
      "300": { "$value": "#D8D9B5", "$type": "color" },
      "400": { "$value": "#C4C690", "$type": "color" },
      "500": { "$value": "#acaf63", "$type": "color" },
      "600": { "$value": "#9FA253", "$type": "color" },
      "700": { "$value": "#848745", "$type": "color" },
      "800": { "$value": "#6A6C37", "$type": "color" },
      "900": { "$value": "#4E4F2B", "$type": "color" },
      "950": { "$value": "#31321B", "$type": "color" }
    },
    "brandInk": { "$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 #acaf63 · 9.07:1
Use #000000AAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 2.32:1
AA fail · AA large fail · AAA fail
Aa
Black text · 9.07:1 · recommended
AA pass · AA large pass · AAA pass
Reading the other direction: #acaf63 as text scores 2.32:1 on white and 9.07:1 on black.
Best tinted ink on it, if plain black or white feels flat: #53542B at 3.39:1.

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
#76783E · 4.64:1
AA on white−18% L
#76783E
The quick fox
#585A2E · 7.20:1
AAA on white−27% L
#585A2E
The quick fox
#acaf63 · 9.07:1
AA on blackalready passes
#acaf63
The quick fox
#acaf63 · 9.07:1
AAA on blackalready passes
#acaf63

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #94974D 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
#acaf63 on white: 2.32:1
AA ✗ fail · AA-large · AAA
Aa
#acaf63 on black: 9.07:1
AA ✓ pass · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #acaf63 as text on that neutral, and that neutral as text on #acaf63.

NeutralRatioBoth directions
White2.32:1AaAa
Slate 502.21:1AaAa
Slate 1002.11:1AaAa
Slate 2001.88:1AaAa
Slate 3001.56:1AaAa
Slate 4001.11:1AaAa
Slate 5002.05:1AaAa
Slate 6003.27:1AaAa
Slate 7004.47:1AaAa
Slate 8006.32:1AaAa
Slate 9007.71:1AaAa
Black9.07:1AaAa
Colour vision deficiency
true color
protanopia · #BAA95D
deuteranopia · #BAAB67
tritanopia · #B5A79D

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. #acaf63 is pinned to step 500; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#F9F9F5
#F3F4EC
#E6E7D4
#D8D9B5
#C4C690
#acaf63
#9FA253
#848745
#6A6C37
#4E4F2B
#31321B
Base = 500Lightest = 50 · #F9F9F5Darkest = 950 · #31321BText 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 0.025 110.6);
  --brand-100: oklch(0.94 0.040 110.6);
  --brand-200: oklch(0.88 0.059 110.6);
  --brand-300: oklch(0.80 0.077 110.6);
  --brand-400: oklch(0.72 0.091 110.6);
  --brand-500: oklch(0.64 0.099 110.6);
  --brand-600: oklch(0.56 0.099 110.6);
  --brand-700: oklch(0.48 0.093 110.6);
  --brand-800: oklch(0.40 0.083 110.6);
  --brand-900: oklch(0.32 0.069 110.6);
  --brand-950: oklch(0.24 0.055 110.6);
}

Colors that work with #acaf63

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#FAFAF5
Tinted page background
Border#E2E3C9
Hairlines and dividers
Muted text#95984E
Captions on the surface
Accent#5E70B4
Second voice, not a rival
Dark variant#53542B
Hover, pressed, headers
Light variant#F6F6EE
Selected rows, tints
Dark surface#242414
Dark-mode background
Hover#9A9D51
One step down in lightness
Pressed#838645
Two steps down
Disabled#CECFB3
Chroma pulled out
Focus ring#BDC166
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 #acaf63

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

Works well for
  • Text and icons on dark surfaces
  • Charts, tags and secondary surfaces
  • Brand accents, badges and data highlights
  • Chart series and data categories
Use with care
  • Text of any size on white — fails WCAG AA
  • Thin strokes and 1px borders — they disappear on light UI
  • Pairing with a same-lightness hue — edges vibrate
Minimum size as text on white
Not as text
Safe as a fill behind white type
No — use #53542B
Safe as a 1px border on white
No — use #94974D

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.

The muted chroma softens the association — it reads considered rather than loud, which suits long-form and data-heavy screens. The mid lightness keeps it versatile in both themes.

Worth knowing

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

Reads as
  • FormalityMedium
  • EnergyMedium
  • Weight46/100
  • 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#6663AF
Analogous left#AF8C63
Analogous right#86AF63
Split-complement 1#6386AF
Split-complement 2#8C63AF
Triadic 1#63ACAF
Triadic 2#AF63AC
Tetradic#63AF8C
On the wheel
Base+30°−30°+120°+240°+180°62°

#acaf63 sits at 62°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red67.5%
Green68.6%
Blue38.8%
R · 0–255
172
0xac
G · 0–255
175
0xaf
B · 0–255
99
0x63

CMYK percentages

Cyan1.7%
Magenta0.0%
Yellow43.4%
Key (black)31.4%

Total ink coverage is 77%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#acaf63 text on a black background

contrast 9.07:1

Card sample

#acaf63 text on a white background

contrast 2.32:1

Card sample

#acaf63 on grey

2.11:1

#acaf63 on its own surface

2.21:1

#acaf63 on its dark surface

6.78:1

CSS3 live lab

Text font color

The quick brown fox

color: #acaf63;
Background color
Panel with #acaf63 background
background-color: #acaf63;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #acaf63;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(172, 175, 99, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(172, 175, 99, 0.45);
Border & gradient
Gradient panel
border: 3px solid #acaf63;
background: linear-gradient(135deg, #acaf63, #79AF63);
Gradient text

Gradient headline

background: linear-gradient(90deg, #acaf63, #66AF63);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #acaf63;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #acaf63;
caret-color: #acaf63;
Left rule
Pull quote or callout
border-left: 4px solid #acaf63;
Ring + tint
Selected chip
background: #F6F6EE;
box-shadow: inset 0 0 0 2px #acaf63;
Conic badge
68%
background: conic-gradient(#acaf63 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #acaf63 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(172, 175, 99, 0.5)
rgb(172 175 99 / 50%)
#acaf6380
hsl(62 32% 54% / 50%)
color-mix(in srgb, #acaf63 50%, transparent)
Alpha8-digit hexFlat on white
10%#acaf631a#F7F7EF
20%#acaf6333#EEEFE0
40%#acaf6366#DEDFC1
60%#acaf6399#CDCFA1
80%#acaf63cc#BDBF82

Gradients from #acaf63

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, #C1C48B, #acaf63 45%, #53542B);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #acaf63, #63A152);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #acaf63, #6663AF);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #CCCEA0 0%, #acaf63 45%, #53542B 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #FAFAF5, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #C0A085 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #90B977 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #53542B 0%, transparent 65%), #acaf63;

Monochromatic scale

Palettes built from #acaf63

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.

#acaf63 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 9.07:1.

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.

#acaf63, answered

What color is #acaf63?

#acaf63 is a balanced soft yellow, closest to Dark Khaki (ΔE2000 3.8). It sits at 62° on the hue wheel with 32% saturation and 54% lightness, which reads as warm.

What is the RGB value of #acaf63?

rgb(172, 175, 99) — 172 red, 175 green and 99 blue out of 255, or 67.5% / 68.6% / 38.8% by channel.

What is #acaf63 in HSL and HSV?

hsl(62, 32%, 54%) and hsv(62, 43%, 69%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #acaf63 a light or a dark color?

It is a mid-tone. Relative luminance is 0.4033 and perceived brightness is 66%, so black text on it reaches 9.07:1.

Should I use black or white text on #acaf63?

Black. It scores 9.07:1 against #acaf63, versus 2.32:1 for white — AAA at any size.

Is #acaf63 accessible on a white background?

#acaf63 on white scores 2.32:1, which fails WCAG AA at every size. Darken it to #76783E to reach 4.5:1, or #585A2E for 7:1.

What is the complementary color of #acaf63?

#6663AF sits directly opposite on the wheel. Softer options are the split-complements #6386AF and #8C63AF, which give the same contrast with far less vibration.

What colors go well with #acaf63?

For interface work: #FAFAF5 as the surface, #E2E3C9 for borders, #95984E for secondary text, #5E70B4 as an accent and #53542B for hover and pressed states. For a palette, the analogous pair #AF8C63 and #86AF63 stays calm, while #6663AF is the loudest partner.

What is #acaf63 in CMYK for printing?

cmyk(2%, 0%, 43%, 31%). This is a screen-to-ink approximation — ask your printer for a proof before committing to a run.

Is #acaf63 warm or cool?

Warm — it scores 29 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #AF9663; nudged cooler, #90B161.

Which Tailwind color is closest to #acaf63?

The lime family — its 500 step is #84cc16, ΔE2000 14.8 away. That is a visible difference, so define #acaf63 as a custom token rather than reaching for the built-in.

How do I use #acaf63 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#acaf63] or text-[#acaf63], 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 #acaf63 with 50% opacity?

rgba(172, 175, 99, 0.5), or #acaf6380 in eight-digit hex. Over white that composites to #D6D7B1; over black, #565832.

Is #acaf63 a web-safe color?

No. The nearest web-safe colour is #999966, ΔE2000 7.9 away. The palette only matters for legacy displays and some email clients now.

What does the color #acaf63 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 moderate chroma the association is present but not shouted.

What gradient works with #acaf63?

The safest is same-hue elevation: linear-gradient(135deg, #C1C48B, #acaf63 45%, #53542B). For more colour, a short hue run to #63A152 keeps it rich without turning muddy.

Work with #acaf63 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #acaf63 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.