#63571B#63571B

#63571B is a mid, moderate yellow. Relative luminance 0.095; OKLCH L 45.6% C 0.080 H 97.8°. Best body text is #FFFFFF at 7.22:1 contrast (WCAG AA passes).

Color values

HEX	#63571B
RGB	rgb(99, 87, 27)
HSL	hsl(50, 57%, 25%)
HSV	hsv(50, 73%, 39%)
CMYK	cmyk(0%, 12.1%, 72.7%, 61.2%)
CIE-LAB	lab(37.02, -2.75, 35.19)
CIE-LCH	lch(37.02, 35.30, 94.47°)
OKLab	oklab(45.62% -0.0108 0.079)
OKLCH	oklch(45.62% 0.08 97.8)
XYZ	xyz(8.7520, 9.5486, 2.4188)
Luminance	0.0955 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63571B #1B2763

analogous

#63331B #63571B #4B631B

triadic

#63571B #1B6357 #571B63

tetradic

#63571B #1B6333 #1B2763 #631B4B

square

#63571B #1B6333 #1B2763 #631B4B

split-complementary

#63571B #1B4B63 #331B63

monochromatic

#181507 #332D0E #63571B #938128 #C3AC35

Accessibility & contrast

On white

7.22

#63571B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.91

#63571B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #63571B

7.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63571B	#FFFFFF	#000000	##FFFFFF
##63571B	1.00	7.22	2.91	7.22
#FFFFFF	7.22	1.00	21.00	1.00
#000000	2.91	21.00	1.00	21.00
##FFFFFF	7.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#605513

Deuteranopia (green-blind)

#63591E

Tritanopia (blue-blind)

#6B504B

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #63571b;
/* rgb */ color: rgb(99, 87, 27);
/* oklch */ color: oklch(45.6% 0.080 97.8);

Tailwind

colors: {
  custom: {
    50: '#92865b',
    500: '#63571b',
    950: '#000000',
  },
}

SCSS

$custom: #63571b;
$custom-light: #92865b;
$custom-dark: #000000;

JSON

{
  "hex": "#63571b",
  "rgb": {
    "r": 99,
    "g": 87,
    "b": 27
  },
  "hsl": {
    "h": 50,
    "s": 57.143,
    "l": 24.706
  },
  "oklch": {
    "l": 0.45615,
    "c": 0.07973,
    "h": 97.8
  },
  "luminance": 0.09548
}

Semantic roles & 50–950 ramp

primary

#63571B

secondary

#415098

accent

#61E047

background

#F9F8F5

surface

#F1EFE9

border

#CBCAC5

text

#0D0B04

muted

#7E7C79

Preview Lab

Preview with #63571B

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

Preview Lab → · Contrast checker → · Palette generator →