#51571B#51571B

#51571B is a dark, moderate yellow. Relative luminance 0.086; OKLCH L 43.8% C 0.082 H 114.7°. Best body text is #FFFFFF at 7.70:1 contrast (WCAG AA passes).

Color values

HEX	#51571B
RGB	rgb(81, 87, 27)
HSL	hsl(66, 53%, 22%)
HSV	hsv(66, 69%, 34%)
CMYK	cmyk(6.9%, 0%, 69%, 65.9%)
CIE-LAB	lab(35.29, -11.51, 32.86)
CIE-LCH	lch(35.29, 34.81, 109.30°)
OKLab	oklab(43.82% -0.0343 0.0746)
OKLCH	oklch(43.82% 0.082 114.7)
XYZ	xyz(6.9995, 8.6450, 2.3366)
Luminance	0.0864 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51571B #211B57

analogous

#573F1B #51571B #33571B

triadic

#51571B #1B5157 #571B51

tetradic

#51571B #1B573F #211B57 #571B33

square

#51571B #1B573F #211B57 #571B33

split-complementary

#51571B #1B3357 #3F1B57

monochromatic

#161707 #26280D #51571B #7C8629 #A8B438

Accessibility & contrast

On white

7.70

#51571B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.73

#51571B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #51571B

7.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51571B	#FFFFFF	#000000	##FFFFFF
##51571B	1.00	7.70	2.73	7.70
#FFFFFF	7.70	1.00	21.00	1.00
#000000	2.73	21.00	1.00	21.00
##FFFFFF	7.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5313

Deuteranopia (green-blind)

#5D541F

Tritanopia (blue-blind)

#56524B

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #51571b;
/* rgb */ color: rgb(81, 87, 27);
/* oklch */ color: oklch(43.8% 0.082 114.7);

Tailwind

colors: {
  custom: {
    50: '#84865b',
    500: '#51571b',
    950: '#000000',
  },
}

SCSS

$custom: #51571b;
$custom-light: #84865b;
$custom-dark: #000000;

JSON

{
  "hex": "#51571b",
  "rgb": {
    "r": 81,
    "g": 87,
    "b": 27
  },
  "hsl": {
    "h": 66,
    "s": 52.632,
    "l": 22.353
  },
  "oklch": {
    "l": 0.43821,
    "c": 0.08215,
    "h": 114.7
  },
  "luminance": 0.08645
}

Semantic roles & 50–950 ramp

primary

#51571B

secondary

#49418D

accent

#4CDC5A

background

#F8F8F5

surface

#EFEFE9

border

#CACAC5

text

#0B0B04

muted

#7C7C79

Preview Lab

Preview with #51571B

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

Preview Lab → · Contrast checker → · Palette generator →