#210307#210307

#210307 is a very dark, muted red. Relative luminance 0.004; OKLCH L 16.6% C 0.055 H 15.0°. Best body text is #FFFFFF at 19.43:1 contrast (WCAG AA passes).

Color values

HEX	#210307
RGB	rgb(33, 3, 7)
HSL	hsl(352, 83%, 7%)
HSV	hsv(352, 91%, 13%)
CMYK	cmyk(0%, 90.9%, 78.8%, 87.1%)
CIE-LAB	lab(3.65, 12.88, 2.83)
CIE-LCH	lch(3.65, 13.18, 12.38°)
OKLab	oklab(16.61% 0.0527 0.0141)
OKLCH	oklch(16.61% 0.055 15)
XYZ	xyz(0.6982, 0.4039, 0.2422)
Luminance	0.0040 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#210307 #03211D

analogous

#210316 #210307 #210E03

triadic

#210307 #072103 #030721

tetradic

#210307 #162103 #03211D #0E0321

square

#210307 #162103 #03211D #0E0321

split-complementary

#210307 #03210E #031621

monochromatic

#1C0306 #1C0306 #210307 #590813 #910D1F

Accessibility & contrast

On white

19.43

#210307 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.08

#210307 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #210307

19.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##210307	#FFFFFF	#000000	##FFFFFF
##210307	1.00	19.43	1.08	19.43
#FFFFFF	19.43	1.00	21.00	1.00
#000000	1.08	21.00	1.00	21.00
##FFFFFF	19.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#090907

Deuteranopia (green-blind)

#120F06

Tritanopia (blue-blind)

#250004

Achromatopsia (no color)

#0D0D0D

Design tokens & code

CSS

--color: #210307;
/* rgb */ color: rgb(33, 3, 7);
/* oklch */ color: oklch(16.6% 0.055 15.0);

Tailwind

colors: {
  custom: {
    50: '#5c484a',
    500: '#210307',
    950: '#000000',
  },
}

SCSS

$custom: #210307;
$custom-light: #5c484a;
$custom-dark: #000000;

JSON

{
  "hex": "#210307",
  "rgb": {
    "r": 33,
    "g": 3,
    "b": 7
  },
  "hsl": {
    "h": 352,
    "s": 83.333,
    "l": 7.059
  },
  "oklch": {
    "l": 0.16614,
    "c": 0.05458,
    "h": 15
  },
  "luminance": 0.00404
}

Semantic roles & 50–950 ramp

primary

#210307

secondary

#1B655B

accent

#FADF2E

background

#F5F4F4

surface

#E9E6E7

border

#C5C2C3

text

#040001

muted

#797777

Preview Lab

Preview with #210307

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

Preview Lab → · Contrast checker → · Palette generator →