#210A03#210A03

#210A03 is a very dark, muted red. Relative luminance 0.005; OKLCH L 18.1% C 0.043 H 41.8°. Best body text is #FFFFFF at 18.93:1 contrast (WCAG AA passes).

Color values

HEX	#210A03
RGB	rgb(33, 10, 3)
HSL	hsl(14, 83%, 7%)
HSV	hsv(14, 91%, 13%)
CMYK	cmyk(0%, 69.7%, 90.9%, 87.1%)
CIE-LAB	lab(4.94, 9.51, 6.34)
CIE-LCH	lch(4.94, 11.43, 33.71°)
OKLab	oklab(18.05% 0.0323 0.0288)
OKLCH	oklch(18.05% 0.043 41.8)
XYZ	xyz(0.7522, 0.5471, 0.1521)
Luminance	0.0055 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#210A03 #031A21

analogous

#21030B #210A03 #211903

triadic

#210A03 #03210A #0A0321

tetradic

#210A03 #0B2103 #031A21 #190321

square

#210A03 #0B2103 #031A21 #190321

split-complementary

#210A03 #032119 #030B21

monochromatic

#1C0903 #1C0903 #210A03 #591B08 #912C0D

Accessibility & contrast

On white

18.93

#210A03 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#210A03 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #210A03

18.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##210A03	#FFFFFF	#000000	##FFFFFF
##210A03	1.00	18.93	1.11	18.93
#FFFFFF	18.93	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#100E02

Deuteranopia (green-blind)

#161303

Tritanopia (blue-blind)

#250608

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #210a03;
/* rgb */ color: rgb(33, 10, 3);
/* oklch */ color: oklch(18.1% 0.043 41.8);

Tailwind

colors: {
  custom: {
    50: '#5c4b48',
    500: '#210a03',
    950: '#000000',
  },
}

SCSS

$custom: #210a03;
$custom-light: #5c4b48;
$custom-dark: #000000;

JSON

{
  "hex": "#210a03",
  "rgb": {
    "r": 33,
    "g": 10,
    "b": 3
  },
  "hsl": {
    "h": 14,
    "s": 83.333,
    "l": 7.059
  },
  "oklch": {
    "l": 0.18054,
    "c": 0.04323,
    "h": 41.8
  },
  "luminance": 0.00547
}

Semantic roles & 50–950 ramp

primary

#210A03

secondary

#1B5465

accent

#CAFA2E

background

#F5F4F4

surface

#E9E7E6

border

#C5C3C2

text

#040100

muted

#797777

Preview Lab

Preview with #210A03

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

Preview Lab → · Contrast checker → · Palette generator →