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yellow · warm

#443c01

a deep, electric yellow · warm · closest name: Dark Olive Green

Token name suggestion: Abyss Citron

RGB
68, 60, 1
HSL
53°, 97%, 14%
CMYK
0, 12, 99, 73
Luminance
0.0446

#443c01 is a deep electric yellow, 53° on the wheel and 19/100 on the cool side. Put white text on it (11.10:1). As text it scores 11.10:1 on white — safe at any size. Nearest name is Dark Olive Green, nearest Tailwind family is stone.

hsl(53 97% 14%)rgb(68 60 1)Base step 950AAA inkWarm

At a glance

Every number on this page in one read: what #443c01 is made of, how bright it looks, and which way it leans.

Hex
#443c01
Hue
53°
yellow
Saturation
97%
electric
Lightness
14%
deep
Brightness
27%
HSV value
Perceived
23%
weighted brightness
Luminance
0.0446
WCAG relative
Temperature
Warm
19/100 cool
Color family
Yellow
Tone
Electric
Best ink
White
11.10:1
Closest name
Dark Olive Green
ΔE2000 17.7
Chroma
33.8
LCH, 0–130ish
OKLCH L
0.354
perceptual lightness
Tailwind
stone
500 · ΔE 26
Web-safe
#333300
nearest of 216
Where it sits
Hue53° of 360°
Saturation97%
Lightness14%
Saturation × lightness field

Left edge is grey, right edge is full chroma; top is white, bottom is black. The dot is #443c01.

Temperature
Warm ← → Cool19% 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
Red28%
Green72%
Blue0%

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

Every format

HEX#443c01
HEX (8-digit)#443c01ff
RGBrgb(68, 60, 1)
RGBArgba(68, 60, 1, 1)
HSLhsl(53, 97%, 14%)
HSV / HSBhsv(53, 99%, 27%)
HWBhwb(53 0% 73%)
CMYKcmyk(0%, 12%, 99%, 73%)
LABlab(25.1 -3.4 33.6)
LCHlch(25.1 33.8 95.7)
OKLCHoklch(0.354 0.073 100.8)
XYZ (D65)xyz(4.01, 4.46, 0.68)
Decimal4471809
Display P3color(display-p3 0.267 0.235 0.004)
Web-safe#333300

Copy-ready code

every platformclick to select
/* CSS */
color: #443c01;
background-color: #443c01;
/* CSS custom property */
--brand: #443c01;
/* Tailwind (arbitrary) */
class="text-[#443c01] bg-[#443c01]"
/* SCSS */
$brand: #443c01;
/* SwiftUI */
Color(red: 0.267, green: 0.235, blue: 0.004)
/* UIKit */
UIColor(red: 0.267, green: 0.235, blue: 0.004, alpha: 1)
/* Android XML */
<color name="brand">#443C01</color>
/* Android Compose */
Color(0xFF443C01)
/* Flutter */
Color(0xFF443C01)
/* Python / OpenCV (BGR) */
(1, 60, 68)
/* Python / PIL (RGB) */
(68, 60, 1)
/* Java AWT */
new Color(68, 60, 1)
/* .NET */
Color.FromArgb(255, 68, 60, 1)
/* OpenGL / Unity (0–1) */
(0.2667f, 0.2353f, 0.0039f, 1f)
/* LaTeX */
\definecolor{brand}{RGB}{68,60,1}
modern cssclick to select
/* mix without leaving CSS */
background: color-mix(in oklab, #443c01 85%, white);
border-color: color-mix(in oklab, #443c01 40%, transparent);
/* theme-aware in one line */
color: light-dark(#7E6F02, #EEEBD3);
/* relative colour syntax */
--hover: hsl(from #443c01 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: #FDFCF1;
  --brand-100: #FCF9E4;
  --brand-200: #FBF4C1;
  --brand-300: #FDF090;
  --brand-400: #FDE959;
  --brand-500: #FCE222;
  --brand-600: #F1D504;
  --brand-700: #C9B103;
  --brand-800: #A18E02;
  --brand-900: #746707;
  --brand-950: #443c01;
  --brand: #443c01;
  --brand-ink: #ffffff;
  --brand-surface: #FAFAF4;
  --brand-border: #EDE7C0;
  --brand-hover: #211D00;
  --brand-pressed: #000000;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand-surface: #242214;
    --brand-ink: #EEEBD3;
  }
}
tailwind.config.jsclick to select
theme: {
  extend: {
    colors: {
      brand: {
        50: '#FDFCF1',
        100: '#FCF9E4',
        200: '#FBF4C1',
        300: '#FDF090',
        400: '#FDE959',
        500: '#FCE222',
        600: '#F1D504',
        700: '#C9B103',
        800: '#A18E02',
        900: '#746707',
        950: '#443c01',
        DEFAULT: '#443c01',
      },
    },
  },
}
scss mapclick to select
$brand: (
  '50': #FDFCF1,
  '100': #FCF9E4,
  '200': #FBF4C1,
  '300': #FDF090,
  '400': #FDE959,
  '500': #FCE222,
  '600': #F1D504,
  '700': #C9B103,
  '800': #A18E02,
  '900': #746707,
  '950': #443c01,
);
$brand-base: #443c01;
$brand-ink: #ffffff;

@function brand($step) { @return map-get($brand, $step); }
w3c design tokens (json)click to select
{
  "color": {
    "brand": {
      "50": { "$value": "#FDFCF1", "$type": "color" },
      "100": { "$value": "#FCF9E4", "$type": "color" },
      "200": { "$value": "#FBF4C1", "$type": "color" },
      "300": { "$value": "#FDF090", "$type": "color" },
      "400": { "$value": "#FDE959", "$type": "color" },
      "500": { "$value": "#FCE222", "$type": "color" },
      "600": { "$value": "#F1D504", "$type": "color" },
      "700": { "$value": "#C9B103", "$type": "color" },
      "800": { "$value": "#A18E02", "$type": "color" },
      "900": { "$value": "#746707", "$type": "color" },
      "950": { "$value": "#443c01", "$type": "color" }
    },
    "brandInk": { "$value": "#ffffff", "$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#ffffff on #443c01 · 11.10:1
Use #ffffffAAA at every size.
Aa
12px
Aa
16px
Aa
24px
Aa
White text · 11.10:1 · recommended
AA pass · AA large pass · AAA pass
Aa
Black text · 1.89:1
AA fail · AA large fail · AAA fail
Reading the other direction: #443c01 as text scores 11.10:1 on white and 1.89:1 on black.
Best tinted ink on it, if plain black or white feels flat: #FFFCE6 at 10.74:1.

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
#443c01 · 11.10:1
AA on whitealready passes
#443c01
The quick fox
#443c01 · 11.10:1
AAA on whitealready passes
#443c01
The quick fox
#857502 · 4.54:1
AA on black+13% L
#857502
The quick fox
#AD9903 · 7.33:1
AAA on black+21% L
#AD9903

Large text — 24px regular or 18.66px bold and above — only needs 3:1, so #443C01 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
#443c01 on white: 11.10:1
AA ✓ pass · AA-large · AAA
Aa
#443c01 on black: 1.89:1
AA ✗ fail · AA-large · AAA
Against the neutral ladder

Contrast is symmetric, so each row covers both directions: #443c01 as text on that neutral, and that neutral as text on #443c01.

NeutralRatioBoth directions
White11.10:1AaAa
Slate 5010.61:1AaAa
Slate 10010.13:1AaAa
Slate 2009.00:1AaAa
Slate 3007.47:1AaAa
Slate 4004.33:1AaAa
Slate 5002.33:1AaAa
Slate 6001.46:1AaAa
Slate 7001.07:1AaAa
Slate 8001.32:1AaAa
Slate 9001.61:1AaAa
Black1.89:1AaAa
Colour vision deficiency
true color
protanopia · #433A00
deuteranopia · #453D05
tritanopia · #4A3732

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. #443c01 is pinned to step 950; the rest hold its hue and let saturation ease off at the extremes so the pale end never turns neon.

#FDFCF1
#FCF9E4
#FBF4C1
#FDF090
#FDE959
#FCE222
#F1D504
#C9B103
#A18E02
#746707
#443c01
Base = 950Lightest = 50 · #FDFCF1Darkest = 950 · #443c01Text step on white = 900
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 0.018 100.8);
  --brand-100: oklch(0.94 0.029 100.8);
  --brand-200: oklch(0.88 0.044 100.8);
  --brand-300: oklch(0.80 0.057 100.8);
  --brand-400: oklch(0.72 0.067 100.8);
  --brand-500: oklch(0.64 0.073 100.8);
  --brand-600: oklch(0.56 0.073 100.8);
  --brand-700: oklch(0.48 0.069 100.8);
  --brand-800: oklch(0.40 0.061 100.8);
  --brand-900: oklch(0.32 0.051 100.8);
  --brand-950: oklch(0.24 0.040 100.8);
}

Colors that work with #443c01

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

Text on it#ffffff
White wins here
Surface#FAFAF4
Tinted page background
Border#EDE7C0
Hairlines and dividers
Muted text#9B914B
Captions on the surface
Accent#001945
Second voice, not a rival
Dark variant#7E6F02
Hover, pressed, headers
Light variant#FFFCE6
Selected rows, tints
Dark surface#242214
Dark-mode background
Hover#211D00
One step down in lightness
Pressed#000000
Two steps down
Disabled#6E6A47
Chroma pulled out
Focus ring#594F00
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 #443c01

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

Works well for
  • Body text and links on white
  • 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
  • Text on black or near-black surfaces
  • 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
Any size
Safe as a fill behind white type
Yes
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.

At this chroma the association is amplified — it will dominate anything placed beside it, so give it space and use it sparingly. 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
  • EnergyHigh
  • Weight87/100
  • 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#010944
Analogous left#441A01
Analogous right#2A4401
Split-complement 1#012A44
Split-complement 2#1A0144
Triadic 1#01443C
Triadic 2#3C0144
Tetradic#01441A
On the wheel
Base+30°−30°+120°+240°+180°53°

#443c01 sits at 53°. Every dot is a harmony position and links to its own page in the table alongside.

RGB percentages

Red26.7%
Green23.5%
Blue0.4%
R · 0–255
68
0x44
G · 0–255
60
0x3c
B · 0–255
1
0x01

CMYK percentages

Cyan0.0%
Magenta11.8%
Yellow98.5%
Key (black)73.3%

Total ink coverage is 184%. Most commercial presses cap around 300% — above that, sheets stop drying properly.

Color previews

#443c01 text on a black background

contrast 1.89:1

Card sample

#443c01 text on a white background

contrast 11.10:1

Card sample

#443c01 on grey

10.13:1

#443c01 on its own surface

10.59:1

#443c01 on its dark surface

1.44:1

CSS3 live lab

Text font color

The quick brown fox

color: #443c01;
Background color
Panel with #443c01 background
background-color: #443c01;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #443c01;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(68, 60, 1, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(68, 60, 1, 0.45);
Border & gradient
Gradient panel
border: 3px solid #443c01;
background: linear-gradient(135deg, #443c01, #1F4401);
Gradient text

Gradient headline

background: linear-gradient(90deg, #443c01, #0F4401);
-webkit-background-clip: text;
color: transparent;
Focus ring
Focused control
outline: 2px solid #443c01;
outline-offset: 3px;
Underline & caret

Marked up text

text-decoration-color: #443c01;
caret-color: #443c01;
Left rule
Pull quote or callout
border-left: 4px solid #443c01;
Ring + tint
Selected chip
background: #FFFCE6;
box-shadow: inset 0 0 0 2px #443c01;
Conic badge
68%
background: conic-gradient(#443c01 68%, #e2e8f0 0);

Transparency

What each alpha value actually composites to. The top row is #443c01 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(68, 60, 1, 0.5)
rgb(68 60 1 / 50%)
#443c0180
hsl(53 97% 14% / 50%)
color-mix(in srgb, #443c01 50%, transparent)
Alpha8-digit hexFlat on white
10%#443c011a#ECECE6
20%#443c0133#DAD8CC
40%#443c0166#B4B199
60%#443c0199#8F8A67
80%#443c01cc#696334

Gradients from #443c01

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, #807102, #443c01 45%, #7E6F02);
Duotone
A short hue run reads richer than a flat fill
background: linear-gradient(120deg, #443c01, #0E2601);
Complement sweep
Loud — keep it behind large type only
background: linear-gradient(90deg, #443c01, #010944);
Spotlight
Hero panels and app headers
background: radial-gradient(120% 120% at 20% 0%, #9E8C02 0%, #443c01 45%, #7E6F02 100%);
Soft wash
Section backgrounds that stay readable
background: linear-gradient(180deg, #FAFAF4, #ffffff);
Mesh
Ambient background, no image weight
background: radial-gradient(60% 60% at 15% 20%, #762402 0%, transparent 60%), radial-gradient(55% 55% at 85% 15%, #356201 0%, transparent 60%), radial-gradient(70% 70% at 50% 95%, #7E6F02 0%, transparent 65%), #443c01;

Monochromatic scale

Palettes built from #443c01

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.

#443c01 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

Sits outside most CMYK gamuts — expect a duller press result, or specify a spot ink.

On screens

Very dark values collapse into each other on cheap panels — leave more lightness between your darkest steps than the numbers suggest.

In dark mode

Too dim on dark surfaces at 1.89:1 — lift it to #857502 for body text, or reserve it for fills.

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.

#443c01, answered

What color is #443c01?

#443c01 is a deep electric yellow, closest to Dark Olive Green (ΔE2000 17.7). It sits at 53° on the hue wheel with 97% saturation and 14% lightness, which reads as warm.

What is the RGB value of #443c01?

rgb(68, 60, 1) — 68 red, 60 green and 1 blue out of 255, or 26.7% / 23.5% / 0.4% by channel.

What is #443c01 in HSL and HSV?

hsl(53, 97%, 14%) and hsv(53, 99%, 27%). HSL is what CSS takes; HSV is what your design tool's picker shows, which is why the saturation numbers rarely match.

Is #443c01 a light or a dark color?

It is a dark color. Relative luminance is 0.0446 and perceived brightness is 23%, so white text on it reaches 11.10:1.

Should I use black or white text on #443c01?

White. It scores 11.10:1 against #443c01, versus 1.89:1 for black — AAA at any size.

Is #443c01 accessible on a white background?

#443c01 on white scores 11.10:1, which clears AAA at every size.

What is the complementary color of #443c01?

#010944 sits directly opposite on the wheel. Softer options are the split-complements #012A44 and #1A0144, which give the same contrast with far less vibration.

What colors go well with #443c01?

For interface work: #FAFAF4 as the surface, #EDE7C0 for borders, #9B914B for secondary text, #001945 as an accent and #7E6F02 for hover and pressed states. For a palette, the analogous pair #441A01 and #2A4401 stays calm, while #010944 is the loudest partner.

What is #443c01 in CMYK for printing?

cmyk(0%, 12%, 99%, 73%). This is a screen-to-ink approximation — a color this saturated sits outside most CMYK gamuts and will print duller than it looks here.

Is #443c01 warm or cool?

Warm — it scores 19 on a scale where 0 is the warmest orange and 100 the coolest azure. Nudged warmer it becomes #442401; nudged cooler, #344500.

Which Tailwind color is closest to #443c01?

The stone family — its 500 step is #78716c, ΔE2000 26 away. That is a visible difference, so define #443c01 as a custom token rather than reaching for the built-in.

How do I use #443c01 in Tailwind CSS?

Inline it as an arbitrary value with bg-[#443c01] or text-[#443c01], 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 #443c01 with 50% opacity?

rgba(68, 60, 1, 0.5), or #443c0180 in eight-digit hex. Over white that composites to #A29E80; over black, #221E01.

Is #443c01 a web-safe color?

No. The nearest web-safe colour is #333300, ΔE2000 5.2 away. The palette only matters for legacy displays and some email clients now.

What does the color #443c01 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 #443c01?

The safest is same-hue elevation: linear-gradient(135deg, #807102, #443c01 45%, #7E6F02). For more colour, a short hue run to #0E2601 keeps it rich without turning muddy.

Work with #443c01 in the Color Lab

Every tool opens with this colour already loaded.

Every value on this page is computed from #443c01 at request time — conversions, contrast ratios and ΔE distances are calculated, never looked up.