#631C10#631C10

#631C10 is a dark, moderate red. Relative luminance 0.035; OKLCH L 34.0% C 0.105 H 32.1°. Best body text is #FFFFFF at 12.32:1 contrast (WCAG AA passes).

Color values

HEX	#631C10
RGB	rgb(99, 28, 16)
HSL	hsl(9, 72%, 23%)
HSV	hsv(9, 84%, 39%)
CMYK	cmyk(0%, 71.7%, 83.8%, 61.2%)
CIE-LAB	lab(22.02, 31.31, 25.50)
CIE-LCH	lch(22.02, 40.38, 39.16°)
OKLab	oklab(33.97% 0.0888 0.0557)
OKLCH	oklch(33.97% 0.105 32.1)
XYZ	xyz(5.6550, 3.5214, 0.8720)
Luminance	0.0352 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631C10 #105763

analogous

#63102D #631C10 #634610

triadic

#631C10 #10631C #1C1063

tetradic

#631C10 #2D6310 #105763 #461063

square

#631C10 #2D6310 #105763 #461063

split-complementary

#631C10 #106346 #102D63

monochromatic

#1A0704 #2E0D07 #631C10 #982B19 #CC3A21

Accessibility & contrast

On white

12.32

#631C10 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#631C10 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631C10

12.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631C10	#FFFFFF	#000000	##FFFFFF
##631C10	1.00	12.32	1.70	12.32
#FFFFFF	12.32	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#312B0E

Deuteranopia (green-blind)

#423A0D

Tritanopia (blue-blind)

#6E061A

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #631c10;
/* rgb */ color: rgb(99, 28, 16);
/* oklch */ color: oklch(34.0% 0.105 32.1);

Tailwind

colors: {
  custom: {
    50: '#965d4f',
    500: '#631c10',
    950: '#000000',
  },
}

SCSS

$custom: #631c10;
$custom-light: #965d4f;
$custom-dark: #000000;

JSON

{
  "hex": "#631c10",
  "rgb": {
    "r": 99,
    "g": 28,
    "b": 16
  },
  "hsl": {
    "h": 8.675,
    "s": 72.174,
    "l": 22.549
  },
  "oklch": {
    "l": 0.33972,
    "c": 0.10479,
    "h": 32.1
  },
  "luminance": 0.03521
}

Semantic roles & 50–950 ramp

primary

#631C10

secondary

#338D9C

accent

#D5EF39

background

#F9F5F4

surface

#F2E9E7

border

#CCC5C3

text

#0F0402

muted

#7E7978

Preview Lab

Preview with #631C10

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

Preview Lab → · Contrast checker → · Palette generator →