#631517#631517

#631517 is a dark, moderate red. Relative luminance 0.033; OKLCH L 33.3% C 0.111 H 24.4°. Best body text is #FFFFFF at 12.73:1 contrast (WCAG AA passes).

Color values

HEX	#631517
RGB	rgb(99, 21, 23)
HSL	hsl(358, 65%, 24%)
HSV	hsv(358, 79%, 39%)
CMYK	cmyk(0%, 78.8%, 76.8%, 61.2%)
CIE-LAB	lab(21.02, 34.61, 20.02)
CIE-LCH	lch(21.02, 39.98, 30.05°)
OKLab	oklab(33.26% 0.1008 0.0456)
OKLCH	oklch(33.26% 0.111 24.4)
XYZ	xyz(5.5690, 3.2517, 1.1448)
Luminance	0.0325 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631517 #156361

analogous

#63153E #631517 #633A15

triadic

#631517 #176315 #151763

tetradic

#631517 #3E6315 #156361 #3A1563

square

#631517 #3E6315 #156361 #3A1563

split-complementary

#631517 #15633A #153E63

monochromatic

#190506 #310A0B #631517 #952023 #C82A2E

Accessibility & contrast

On white

12.73

#631517 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#631517 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631517

12.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631517	#FFFFFF	#000000	##FFFFFF
##631517	1.00	12.73	1.65	12.73
#FFFFFF	12.73	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C2816

Deuteranopia (green-blind)

#3F3914

Tritanopia (blue-blind)

#6E0017

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #631517;
/* rgb */ color: rgb(99, 21, 23);
/* oklch */ color: oklch(33.3% 0.111 24.4);

Tailwind

colors: {
  custom: {
    50: '#965954',
    500: '#631517',
    950: '#000000',
  },
}

SCSS

$custom: #631517;
$custom-light: #965954;
$custom-dark: #000000;

JSON

{
  "hex": "#631517",
  "rgb": {
    "r": 99,
    "g": 21,
    "b": 23
  },
  "hsl": {
    "h": 358.462,
    "s": 65,
    "l": 23.529
  },
  "oklch": {
    "l": 0.33256,
    "c": 0.11063,
    "h": 24.4
  },
  "luminance": 0.03251
}

Semantic roles & 50–950 ramp

primary

#631517

secondary

#3A9A98

accent

#E8E440

background

#F9F5F4

surface

#F2E9E7

border

#CCC5C3

text

#0F0402

muted

#7E7978

Preview Lab

Preview with #631517

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

Preview Lab → · Contrast checker → · Palette generator →