#CB3F3F#CB3F3F

#CB3F3F is a mid, vivid red. Relative luminance 0.166; OKLCH L 57.1% C 0.177 H 24.7°. Best body text is #FFFFFF at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#CB3F3F
RGB	rgb(203, 63, 63)
HSL	hsl(0, 57%, 52%)
HSV	hsv(0, 69%, 80%)
CMYK	cmyk(0%, 69%, 69%, 20.4%)
CIE-LAB	lab(47.77, 55.05, 31.90)
CIE-LCH	lch(47.77, 63.63, 30.09°)
OKLab	oklab(57.1% 0.1607 0.0739)
OKLCH	oklch(57.1% 0.177 24.7)
XYZ	xyz(27.3063, 16.6144, 6.4707)
Luminance	0.1661 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CB3F3F #3FCBCB

analogous

#CB3F85 #CB3F3F #CB853F

triadic

#CB3F3F #3FCB3F #3F3FCB

tetradic

#CB3F3F #85CB3F #3FCBCB #853FCB

square

#CB3F3F #85CB3F #3FCBCB #853FCB

split-complementary

#CB3F3F #3FCB85 #3F85CB

monochromatic

#711F1F #A12C2C #CB3F3F #D86F6F #E59F9F

Accessibility & contrast

On white

4.86

#CB3F3F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.32

#CB3F3F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CB3F3F

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CB3F3F	#FFFFFF	#000000	##FFFFFF
##CB3F3F	1.00	4.86	4.32	4.86
#FFFFFF	4.86	1.00	21.00	1.00
#000000	4.32	21.00	1.00	21.00
##FFFFFF	4.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#665E3E

Deuteranopia (green-blind)

#897C3B

Tritanopia (blue-blind)

#DF1441

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #cb3f3f;
/* rgb */ color: rgb(203, 63, 63);
/* oklch */ color: oklch(57.1% 0.177 24.7);

Tailwind

colors: {
  custom: {
    50: '#e37d74',
    500: '#cb3f3f',
    950: '#000000',
  },
}

SCSS

$custom: #cb3f3f;
$custom-light: #e37d74;
$custom-dark: #000000;

JSON

{
  "hex": "#cb3f3f",
  "rgb": {
    "r": 203,
    "g": 63,
    "b": 63
  },
  "hsl": {
    "h": 0,
    "s": 57.377,
    "l": 52.157
  },
  "oklch": {
    "l": 0.57096,
    "c": 0.17688,
    "h": 24.7
  },
  "luminance": 0.1661
}

Semantic roles & 50–950 ramp

primary

#CB3F3F

secondary

#94D1D1

accent

#E1E147

background

#FFF7F7

surface

#FEEEED

border

#D6C9C8

text

#170A08

muted

#857C7B

Preview Lab

Preview with #CB3F3F

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

Preview Lab → · Contrast checker → · Palette generator →