#631617#631617

#631617 is a dark, moderate red. Relative luminance 0.033; OKLCH L 33.4% C 0.110 H 24.8°. Best body text is #FFFFFF at 12.67:1 contrast (WCAG AA passes).

Color values

HEX	#631617
RGB	rgb(99, 22, 23)
HSL	hsl(359, 64%, 24%)
HSV	hsv(359, 78%, 39%)
CMYK	cmyk(0%, 77.8%, 76.8%, 61.2%)
CIE-LAB	lab(21.17, 34.22, 20.19)
CIE-LCH	lch(21.17, 39.73, 30.54°)
OKLab	oklab(33.36% 0.0995 0.046)
OKLCH	oklch(33.36% 0.11 24.8)
XYZ	xyz(5.5878, 3.2892, 1.1511)
Luminance	0.0329 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631617 #166362

analogous

#63163D #631617 #633B16

triadic

#631617 #176316 #161763

tetradic

#631617 #3D6316 #166362 #3B1663

square

#631617 #3D6316 #166362 #3B1663

split-complementary

#631617 #16633B #163D63

monochromatic

#190606 #310B0B #631617 #952123 #C72C2E

Accessibility & contrast

On white

12.67

#631617 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#631617 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631617

12.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631617	#FFFFFF	#000000	##FFFFFF
##631617	1.00	12.67	1.66	12.67
#FFFFFF	12.67	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C2816

Deuteranopia (green-blind)

#403914

Tritanopia (blue-blind)

#6E0017

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #631617;
/* rgb */ color: rgb(99, 22, 23);
/* oklch */ color: oklch(33.4% 0.110 24.8);

Tailwind

colors: {
  custom: {
    50: '#965a54',
    500: '#631617',
    950: '#000000',
  },
}

SCSS

$custom: #631617;
$custom-light: #965a54;
$custom-dark: #000000;

JSON

{
  "hex": "#631617",
  "rgb": {
    "r": 99,
    "g": 22,
    "b": 23
  },
  "hsl": {
    "h": 359.221,
    "s": 63.636,
    "l": 23.725
  },
  "oklch": {
    "l": 0.33362,
    "c": 0.10964,
    "h": 24.8
  },
  "luminance": 0.03288
}

Semantic roles & 50–950 ramp

primary

#631617

secondary

#3B9A99

accent

#E7E541

background

#F9F5F4

surface

#F2E9E7

border

#CCC5C3

text

#0F0402

muted

#7E7978

Preview Lab

Preview with #631617

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

Preview Lab → · Contrast checker → · Palette generator →