#CB3E3B#CB3E3B

#CB3E3B is a mid, vivid red. Relative luminance 0.165; OKLCH L 56.9% C 0.178 H 25.9°. Best body text is #FFFFFF at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#CB3E3B
RGB	rgb(203, 62, 59)
HSL	hsl(1, 58%, 51%)
HSV	hsv(1, 71%, 80%)
CMYK	cmyk(0%, 69.5%, 70.9%, 20.4%)
CIE-LAB	lab(47.57, 55.24, 33.99)
CIE-LCH	lch(47.57, 64.86, 31.61°)
OKLab	oklab(56.93% 0.1605 0.0778)
OKLCH	oklch(56.93% 0.178 25.9)
XYZ	xyz(27.1436, 16.4615, 5.8850)
Luminance	0.1646 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CB3E3B #3BC8CB

analogous

#CB3B80 #CB3E3B #CB863B

triadic

#CB3E3B #3BCB3E #3E3BCB

tetradic

#CB3E3B #80CB3B #3BC8CB #863BCB

square

#CB3E3B #80CB3B #3BC8CB #863BCB

split-complementary

#CB3E3B #3BCB86 #3B80CB

monochromatic

#6E1F1D #9F2D2A #CB3E3B #D86E6B #E59D9C

Accessibility & contrast

On white

4.89

#CB3E3B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.29

#CB3E3B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CB3E3B

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CB3E3B	#FFFFFF	#000000	##FFFFFF
##CB3E3B	1.00	4.89	4.29	4.89
#FFFFFF	4.89	1.00	21.00	1.00
#000000	4.29	21.00	1.00	21.00
##FFFFFF	4.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#665D39

Deuteranopia (green-blind)

#897C36

Tritanopia (blue-blind)

#DF0E3F

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #cb3e3b;
/* rgb */ color: rgb(203, 62, 59);
/* oklch */ color: oklch(56.9% 0.178 25.9);

Tailwind

colors: {
  custom: {
    50: '#e37c71',
    500: '#cb3e3b',
    950: '#000000',
  },
}

SCSS

$custom: #cb3e3b;
$custom-light: #e37c71;
$custom-dark: #000000;

JSON

{
  "hex": "#cb3e3b",
  "rgb": {
    "r": 203,
    "g": 62,
    "b": 59
  },
  "hsl": {
    "h": 1.25,
    "s": 58.065,
    "l": 51.373
  },
  "oklch": {
    "l": 0.56932,
    "c": 0.17834,
    "h": 25.9
  },
  "luminance": 0.16458
}

Semantic roles & 50–950 ramp

primary

#CB3E3B

secondary

#91CFD1

accent

#DEE147

background

#FFF7F6

surface

#FEEEEC

border

#D6C9C7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #CB3E3B

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

Preview Lab → · Contrast checker → · Palette generator →