#631C19#631C19

#631C19 is a dark, moderate red. Relative luminance 0.036; OKLCH L 34.1% C 0.103 H 26.5°. Best body text is #FFFFFF at 12.28:1 contrast (WCAG AA passes).

Color values

HEX	#631C19
RGB	rgb(99, 28, 25)
HSL	hsl(2, 60%, 24%)
HSV	hsv(2, 75%, 39%)
CMYK	cmyk(0%, 71.7%, 74.7%, 61.2%)
CIE-LAB	lab(22.14, 31.74, 20.00)
CIE-LCH	lch(22.14, 37.52, 32.22°)
OKLab	oklab(34.1% 0.0922 0.046)
OKLCH	oklch(34.1% 0.103 26.5)
XYZ	xyz(5.7369, 3.5542, 1.3035)
Luminance	0.0355 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631C19 #196063

analogous

#63193B #631C19 #634119

triadic

#631C19 #19631C #1C1963

tetradic

#631C19 #3B6319 #196063 #411963

square

#631C19 #3B6319 #196063 #411963

split-complementary

#631C19 #196341 #193B63

monochromatic

#180706 #320E0D #631C19 #942A25 #C53832

Accessibility & contrast

On white

12.28

#631C19 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#631C19 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631C19

12.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631C19	#FFFFFF	#000000	##FFFFFF
##631C19	1.00	12.28	1.71	12.28
#FFFFFF	12.28	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#302B18

Deuteranopia (green-blind)

#413B17

Tritanopia (blue-blind)

#6D081C

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #631c19;
/* rgb */ color: rgb(99, 28, 25);
/* oklch */ color: oklch(34.1% 0.103 26.5);

Tailwind

colors: {
  custom: {
    50: '#955d55',
    500: '#631c19',
    950: '#000000',
  },
}

SCSS

$custom: #631c19;
$custom-light: #955d55;
$custom-dark: #000000;

JSON

{
  "hex": "#631c19",
  "rgb": {
    "r": 99,
    "g": 28,
    "b": 25
  },
  "hsl": {
    "h": 2.432,
    "s": 59.677,
    "l": 24.314
  },
  "oklch": {
    "l": 0.34098,
    "c": 0.10303,
    "h": 26.5
  },
  "luminance": 0.03553
}

Semantic roles & 50–950 ramp

primary

#631C19

secondary

#3F9599

accent

#DCE345

background

#F9F5F5

surface

#F2E9E8

border

#CCC5C4

text

#0E0403

muted

#7E7978

Preview Lab

Preview with #631C19

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

Preview Lab → · Contrast checker → · Palette generator →