#23100B#23100B

#23100B is a very dark, muted red. Relative luminance 0.008; OKLCH L 19.9% C 0.034 H 35.6°. Best body text is #FFFFFF at 18.25:1 contrast (WCAG AA passes).

Color values

HEX	#23100B
RGB	rgb(35, 16, 11)
HSL	hsl(13, 52%, 9%)
HSV	hsv(13, 69%, 14%)
CMYK	cmyk(0%, 54.3%, 68.6%, 86.3%)
CIE-LAB	lab(6.79, 9.03, 5.82)
CIE-LCH	lch(6.79, 10.74, 32.79°)
OKLab	oklab(19.95% 0.0275 0.0197)
OKLCH	oklch(19.95% 0.034 35.6)
XYZ	xyz(0.9389, 0.7522, 0.4123)
Luminance	0.0075 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#23100B #0B1E23

analogous

#230B12 #23100B #231C0B

triadic

#23100B #0B2310 #100B23

tetradic

#23100B #12230B #0B1E23 #1C0B23

square

#23100B #12230B #0B1E23 #1C0B23

split-complementary

#23100B #0B231C #0B1223

monochromatic

#170B07 #170B07 #23100B #52251A #803B28

Accessibility & contrast

On white

18.25

#23100B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#23100B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #23100B

18.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##23100B	#FFFFFF	#000000	##FFFFFF
##23100B	1.00	18.25	1.15	18.25
#FFFFFF	18.25	1.00	21.00	1.00
#000000	1.15	21.00	1.00	21.00
##FFFFFF	18.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#15130B

Deuteranopia (green-blind)

#19170B

Tritanopia (blue-blind)

#270D0F

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #23100b;
/* rgb */ color: rgb(35, 16, 11);
/* oklch */ color: oklch(19.9% 0.034 35.6);

Tailwind

colors: {
  custom: {
    50: '#5e4e4c',
    500: '#23100b',
    950: '#000000',
  },
}

SCSS

$custom: #23100b;
$custom-light: #5e4e4c;
$custom-dark: #000000;

JSON

{
  "hex": "#23100b",
  "rgb": {
    "r": 35,
    "g": 16,
    "b": 11
  },
  "hsl": {
    "h": 12.5,
    "s": 52.174,
    "l": 9.02
  },
  "oklch": {
    "l": 0.19945,
    "c": 0.03379,
    "h": 35.6
  },
  "luminance": 0.00752
}

Semantic roles & 50–950 ramp

primary

#23100B

secondary

#2C545E

accent

#BEDC4C

background

#F5F4F4

surface

#E9E7E7

border

#C5C3C3

text

#040101

muted

#797777

Preview Lab

Preview with #23100B

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

Preview Lab → · Contrast checker → · Palette generator →