#51551B#51551B

#51551B is a dark, moderate yellow. Relative luminance 0.083; OKLCH L 43.3% C 0.080 H 113.0°. Best body text is #FFFFFF at 7.88:1 contrast (WCAG AA passes).

Color values

HEX	#51551B
RGB	rgb(81, 85, 27)
HSL	hsl(64, 52%, 22%)
HSV	hsv(64, 68%, 33%)
CMYK	cmyk(4.7%, 0%, 68.2%, 66.7%)
CIE-LAB	lab(34.65, -10.36, 32.18)
CIE-LCH	lch(34.65, 33.80, 107.84°)
OKLab	oklab(43.31% -0.0311 0.0732)
OKLCH	oklch(43.31% 0.08 113)
XYZ	xyz(6.8398, 8.3256, 2.2834)
Luminance	0.0833 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51551B #1F1B55

analogous

#553C1B #51551B #34551B

triadic

#51551B #1B5155 #551B51

tetradic

#51551B #1B553C #1F1B55 #551B34

square

#51551B #1B553C #1F1B55 #551B34

split-complementary

#51551B #1B3455 #3C1B55

monochromatic

#161707 #25270C #51551B #7D832A #AAB239

Accessibility & contrast

On white

7.88

#51551B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#51551B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #51551B

7.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51551B	#FFFFFF	#000000	##FFFFFF
##51551B	1.00	7.88	2.67	7.88
#FFFFFF	7.88	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5114

Deuteranopia (green-blind)

#5C521F

Tritanopia (blue-blind)

#575049

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #51551b;
/* rgb */ color: rgb(81, 85, 27);
/* oklch */ color: oklch(43.3% 0.080 113.0);

Tailwind

colors: {
  custom: {
    50: '#84845b',
    500: '#51551b',
    950: '#000000',
  },
}

SCSS

$custom: #51551b;
$custom-light: #84845b;
$custom-dark: #000000;

JSON

{
  "hex": "#51551b",
  "rgb": {
    "r": 81,
    "g": 85,
    "b": 27
  },
  "hsl": {
    "h": 64.138,
    "s": 51.786,
    "l": 21.961
  },
  "oklch": {
    "l": 0.43308,
    "c": 0.07953,
    "h": 113
  },
  "luminance": 0.08325
}

Semantic roles & 50–950 ramp

primary

#51551B

secondary

#46418B

accent

#4DDB56

background

#F8F8F5

surface

#EFEFE9

border

#CACAC5

text

#0B0B04

muted

#7C7C79

Preview Lab

Preview with #51551B

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

Preview Lab → · Contrast checker → · Palette generator →