#631729#631729

#631729 is a dark, moderate red. Relative luminance 0.034; OKLCH L 33.9% C 0.108 H 11.4°. Best body text is #FFFFFF at 12.46:1 contrast (WCAG AA passes).

Color values

HEX	#631729
RGB	rgb(99, 23, 41)
HSL	hsl(346, 62%, 24%)
HSV	hsv(346, 77%, 39%)
CMYK	cmyk(0%, 76.8%, 58.6%, 61.2%)
CIE-LAB	lab(21.68, 35.05, 8.49)
CIE-LCH	lch(21.68, 36.06, 13.62°)
OKLab	oklab(33.86% 0.1061 0.0214)
OKLCH	oklch(33.86% 0.108 11.4)
XYZ	xyz(5.8528, 3.4263, 2.4506)
Luminance	0.0343 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631729 #176351

analogous

#63174F #631729 #632B17

triadic

#631729 #296317 #172963

tetradic

#631729 #4F6317 #176351 #2B1763

square

#631729 #4F6317 #176351 #2B1763

split-complementary

#631729 #17632B #174F63

monochromatic

#19060A #310B14 #631729 #95233E #C62E52

Accessibility & contrast

On white

12.46

#631729 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#631729 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631729

12.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631729	#FFFFFF	#000000	##FFFFFF
##631729	1.00	12.46	1.69	12.46
#FFFFFF	12.46	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A2A29

Deuteranopia (green-blind)

#3E3A27

Tritanopia (blue-blind)

#6D051E

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #631729;
/* rgb */ color: rgb(99, 23, 41);
/* oklch */ color: oklch(33.9% 0.108 11.4);

Tailwind

colors: {
  custom: {
    50: '#945b62',
    500: '#631729',
    950: '#000000',
  },
}

SCSS

$custom: #631729;
$custom-light: #945b62;
$custom-dark: #000000;

JSON

{
  "hex": "#631729",
  "rgb": {
    "r": 99,
    "g": 23,
    "b": 41
  },
  "hsl": {
    "h": 345.789,
    "s": 62.295,
    "l": 23.922
  },
  "oklch": {
    "l": 0.33858,
    "c": 0.10818,
    "h": 11.4
  },
  "luminance": 0.03426
}

Semantic roles & 50–950 ramp

primary

#631729

secondary

#3C9A83

accent

#E5BF42

background

#F9F5F5

surface

#F2E9EA

border

#CCC5C6

text

#0E0405

muted

#7E7979

Preview Lab

Preview with #631729

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

Preview Lab → · Contrast checker → · Palette generator →