#631711#631711

#631711 is a dark, moderate red. Relative luminance 0.033; OKLCH L 33.4% C 0.110 H 28.9°. Best body text is #FFFFFF at 12.64:1 contrast (WCAG AA passes).

Color values

HEX	#631711
RGB	rgb(99, 23, 17)
HSL	hsl(4, 71%, 23%)
HSV	hsv(4, 83%, 39%)
CMYK	cmyk(0%, 76.8%, 82.8%, 61.2%)
CIE-LAB	lab(21.23, 33.54, 24.08)
CIE-LCH	lch(21.23, 41.29, 35.68°)
OKLab	oklab(33.39% 0.096 0.0529)
OKLCH	oklch(33.39% 0.11 28.9)
XYZ	xyz(5.5538, 3.3068, 0.8760)
Luminance	0.0331 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631711 #115D63

analogous

#631134 #631711 #634011

triadic

#631711 #116317 #171163

tetradic

#631711 #346311 #115D63 #401163

square

#631711 #346311 #115D63 #401163

split-complementary

#631711 #116340 #113463

monochromatic

#1A0604 #2F0B08 #631711 #97231A #CB2F23

Accessibility & contrast

On white

12.64

#631711 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#631711 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631711

12.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631711	#FFFFFF	#000000	##FFFFFF
##631711	1.00	12.64	1.66	12.64
#FFFFFF	12.64	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E2810

Deuteranopia (green-blind)

#40390E

Tritanopia (blue-blind)

#6E0016

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #631711;
/* rgb */ color: rgb(99, 23, 17);
/* oklch */ color: oklch(33.4% 0.110 28.9);

Tailwind

colors: {
  custom: {
    50: '#965a4f',
    500: '#631711',
    950: '#000000',
  },
}

SCSS

$custom: #631711;
$custom-light: #965a4f;
$custom-dark: #000000;

JSON

{
  "hex": "#631711",
  "rgb": {
    "r": 99,
    "g": 23,
    "b": 17
  },
  "hsl": {
    "h": 4.39,
    "s": 70.69,
    "l": 22.745
  },
  "oklch": {
    "l": 0.33385,
    "c": 0.10958,
    "h": 28.9
  },
  "luminance": 0.03306
}

Semantic roles & 50–950 ramp

primary

#631711

secondary

#34949B

accent

#E0ED3A

background

#F9F5F4

surface

#F2E9E7

border

#CCC5C3

text

#0F0402

muted

#7E7978

Preview Lab

Preview with #631711

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

Preview Lab → · Contrast checker → · Palette generator →