#40451B#40451B

#40451B is a dark, moderate yellow. Relative luminance 0.054; OKLCH L 37.5% C 0.063 H 115.1°. Best body text is #FFFFFF at 10.07:1 contrast (WCAG AA passes).

Color values

HEX	#40451B
RGB	rgb(64, 69, 27)
HSL	hsl(67, 44%, 19%)
HSV	hsv(67, 61%, 27%)
CMYK	cmyk(7.2%, 0%, 60.9%, 72.9%)
CIE-LAB	lab(27.91, -9.20, 24.30)
CIE-LCH	lch(27.91, 25.98, 110.75°)
OKLab	oklab(37.54% -0.0266 0.0568)
OKLCH	oklch(37.54% 0.063 115.1)
XYZ	xyz(4.4404, 5.4254, 1.8500)
Luminance	0.0542 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40451B #201B45

analogous

#45351B #40451B #2B451B

triadic

#40451B #1B4045 #451B40

tetradic

#40451B #1B4535 #201B45 #451B2B

square

#40451B #1B4535 #201B45 #451B2B

split-complementary

#40451B #1B2B45 #351B45

monochromatic

#141609 #17190A #40451B #69712C #929D3D

Accessibility & contrast

On white

10.07

#40451B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#40451B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40451B

10.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40451B	#FFFFFF	#000000	##FFFFFF
##40451B	1.00	10.07	2.09	10.07
#FFFFFF	10.07	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A4217

Deuteranopia (green-blind)

#4A421D

Tritanopia (blue-blind)

#44413C

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #40451b;
/* rgb */ color: rgb(64, 69, 27);
/* oklch */ color: oklch(37.5% 0.063 115.1);

Tailwind

colors: {
  custom: {
    50: '#767859',
    500: '#40451b',
    950: '#000000',
  },
}

SCSS

$custom: #40451b;
$custom-light: #767859;
$custom-dark: #000000;

JSON

{
  "hex": "#40451b",
  "rgb": {
    "r": 64,
    "g": 69,
    "b": 27
  },
  "hsl": {
    "h": 67.143,
    "s": 43.75,
    "l": 18.824
  },
  "oklch": {
    "l": 0.37538,
    "c": 0.06277,
    "h": 115.1
  },
  "luminance": 0.05425
}

Semantic roles & 50–950 ramp

primary

#40451B

secondary

#48417B

accent

#54D363

background

#F7F7F5

surface

#EDEDE9

border

#C8C8C5

text

#080903

muted

#7B7B78

Preview Lab

Preview with #40451B

Body copy rendered with the generated semantic roles for this colour.

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