#631913#631913

#631913 is a dark, moderate red. Relative luminance 0.034; OKLCH L 33.6% C 0.107 H 28.7°. Best body text is #FFFFFF at 12.51:1 contrast (WCAG AA passes).

Color values

HEX	#631913
RGB	rgb(99, 25, 19)
HSL	hsl(5, 68%, 23%)
HSV	hsv(5, 81%, 39%)
CMYK	cmyk(0%, 74.7%, 80.8%, 61.2%)
CIE-LAB	lab(21.56, 32.78, 23.22)
CIE-LCH	lch(21.56, 40.17, 35.32°)
OKLab	oklab(33.64% 0.0941 0.0516)
OKLCH	oklch(33.64% 0.107 28.7)
XYZ	xyz(5.6114, 3.3958, 0.9759)
Luminance	0.0340 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631913 #135D63

analogous

#631335 #631913 #634113

triadic

#631913 #136319 #191363

tetradic

#631913 #356313 #135D63 #411363

square

#631913 #356313 #135D63 #411363

split-complementary

#631913 #136341 #133563

monochromatic

#1A0605 #300C09 #631913 #96261D #CA3327

Accessibility & contrast

On white

12.51

#631913 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#631913 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631913

12.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631913	#FFFFFF	#000000	##FFFFFF
##631913	1.00	12.51	1.68	12.51
#FFFFFF	12.51	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F2912

Deuteranopia (green-blind)

#413A10

Tritanopia (blue-blind)

#6E0118

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #631913;
/* rgb */ color: rgb(99, 25, 19);
/* oklch */ color: oklch(33.6% 0.107 28.7);

Tailwind

colors: {
  custom: {
    50: '#965b51',
    500: '#631913',
    950: '#000000',
  },
}

SCSS

$custom: #631913;
$custom-light: #965b51;
$custom-dark: #000000;

JSON

{
  "hex": "#631913",
  "rgb": {
    "r": 99,
    "g": 25,
    "b": 19
  },
  "hsl": {
    "h": 4.5,
    "s": 67.797,
    "l": 23.137
  },
  "oklch": {
    "l": 0.33641,
    "c": 0.10726,
    "h": 28.7
  },
  "luminance": 0.03395
}

Semantic roles & 50–950 ramp

primary

#631913

secondary

#37939B

accent

#DEEB3D

background

#F9F5F4

surface

#F2E9E7

border

#CCC5C3

text

#0F0402

muted

#7E7978

Preview Lab

Preview with #631913

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

Preview Lab → · Contrast checker → · Palette generator →