#631718#631718

#631718 is a dark, moderate red. Relative luminance 0.033; OKLCH L 33.5% C 0.109 H 24.6°. Best body text is #FFFFFF at 12.60:1 contrast (WCAG AA passes).

Color values

HEX	#631718
RGB	rgb(99, 23, 24)
HSL	hsl(359, 62%, 24%)
HSV	hsv(359, 77%, 39%)
CMYK	cmyk(0%, 76.8%, 75.8%, 61.2%)
CIE-LAB	lab(21.33, 33.87, 19.71)
CIE-LCH	lch(21.33, 39.18, 30.20°)
OKLab	oklab(33.49% 0.0987 0.0452)
OKLCH	oklch(33.49% 0.109 24.6)
XYZ	xyz(5.6175, 3.3322, 1.2114)
Luminance	0.0333 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631718 #176362

analogous

#63173E #631718 #633C17

triadic

#631718 #186317 #171863

tetradic

#631718 #3E6317 #176362 #3C1763

square

#631718 #3E6317 #176362 #3C1763

split-complementary

#631718 #17633C #173E63

monochromatic

#190606 #310B0C #631718 #952324 #C62E30

Accessibility & contrast

On white

12.60

#631718 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#631718 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631718

12.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631718	#FFFFFF	#000000	##FFFFFF
##631718	1.00	12.60	1.67	12.60
#FFFFFF	12.60	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D2917

Deuteranopia (green-blind)

#403915

Tritanopia (blue-blind)

#6D0018

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #631718;
/* rgb */ color: rgb(99, 23, 24);
/* oklch */ color: oklch(33.5% 0.109 24.6);

Tailwind

colors: {
  custom: {
    50: '#965a54',
    500: '#631718',
    950: '#000000',
  },
}

SCSS

$custom: #631718;
$custom-light: #965a54;
$custom-dark: #000000;

JSON

{
  "hex": "#631718",
  "rgb": {
    "r": 99,
    "g": 23,
    "b": 24
  },
  "hsl": {
    "h": 359.211,
    "s": 62.295,
    "l": 23.922
  },
  "oklch": {
    "l": 0.33487,
    "c": 0.10851,
    "h": 24.6
  },
  "luminance": 0.03331
}

Semantic roles & 50–950 ramp

primary

#631718

secondary

#3C9A98

accent

#E5E342

background

#F9F5F4

surface

#F2E9E7

border

#CCC5C3

text

#0F0403

muted

#7E7978

Preview Lab

Preview with #631718

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

Preview Lab → · Contrast checker → · Palette generator →