#51571F#51571F

#51571F is a dark, moderate yellow. Relative luminance 0.087; OKLCH L 43.9% C 0.078 H 114.8°. Best body text is #FFFFFF at 7.68:1 contrast (WCAG AA passes).

Color values

HEX	#51571F
RGB	rgb(81, 87, 31)
HSL	hsl(66, 47%, 23%)
HSV	hsv(66, 64%, 34%)
CMYK	cmyk(6.9%, 0%, 64.4%, 65.9%)
CIE-LAB	lab(35.33, -11.18, 30.93)
CIE-LCH	lch(35.33, 32.89, 109.88°)
OKLab	oklab(43.86% -0.0329 0.0712)
OKLCH	oklch(43.86% 0.078 114.8)
XYZ	xyz(7.0490, 8.6648, 2.5972)
Luminance	0.0867 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51571F #251F57

analogous

#57411F #51571F #35571F

triadic

#51571F #1F5157 #571F51

tetradic

#51571F #1F5741 #251F57 #571F35

square

#51571F #1F5741 #251F57 #571F35

split-complementary

#51571F #1F3557 #411F57

monochromatic

#151708 #272A0F #51571F #7B842F #A5B13F

Accessibility & contrast

On white

7.68

#51571F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.73

#51571F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #51571F

7.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51571F	#FFFFFF	#000000	##FFFFFF
##51571F	1.00	7.68	2.73	7.68
#FFFFFF	7.68	1.00	21.00	1.00
#000000	2.73	21.00	1.00	21.00
##FFFFFF	7.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5319

Deuteranopia (green-blind)

#5D5422

Tritanopia (blue-blind)

#56524B

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #51571f;
/* rgb */ color: rgb(81, 87, 31);
/* oklch */ color: oklch(43.9% 0.078 114.8);

Tailwind

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

SCSS

$custom: #51571f;
$custom-light: #84865d;
$custom-dark: #000000;

JSON

{
  "hex": "#51571f",
  "rgb": {
    "r": 81,
    "g": 87,
    "b": 31
  },
  "hsl": {
    "h": 66.429,
    "s": 47.458,
    "l": 23.137
  },
  "oklch": {
    "l": 0.43864,
    "c": 0.07844,
    "h": 114.8
  },
  "luminance": 0.08665
}

Semantic roles & 50–950 ramp

primary

#51571F

secondary

#4E468C

accent

#51D75F

background

#F8F8F5

surface

#EFEFE9

border

#CACAC5

text

#0B0B04

muted

#7C7C79

Preview Lab

Preview with #51571F

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

Preview Lab → · Contrast checker → · Palette generator →