#CB3B40#CB3B40

#CB3B40 is a mid, vivid red. Relative luminance 0.162; OKLCH L 56.7% C 0.181 H 23.3°. Best body text is #FFFFFF at 4.95:1 contrast (WCAG AA passes).

Color values

HEX	#CB3B40
RGB	rgb(203, 59, 64)
HSL	hsl(358, 58%, 51%)
HSV	hsv(358, 71%, 80%)
CMYK	cmyk(0%, 70.9%, 68.5%, 20.4%)
CIE-LAB	lab(47.23, 56.61, 30.67)
CIE-LCH	lch(47.23, 64.39, 28.44°)
OKLab	oklab(56.7% 0.1659 0.0713)
OKLCH	oklch(56.7% 0.181 23.3)
XYZ	xyz(27.1209, 16.1986, 6.5481)
Luminance	0.1620 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CB3B40 #3BCBC6

analogous

#CB3B88 #CB3B40 #CB7E3B

triadic

#CB3B40 #40CB3B #3B40CB

tetradic

#CB3B40 #88CB3B #3BCBC6 #7E3BCB

square

#CB3B40 #88CB3B #3BCBC6 #7E3BCB

split-complementary

#CB3B40 #3BCB7E #3B88CB

monochromatic

#6E1D20 #9F2A2E #CB3B40 #D86B6F #E59C9E

Accessibility & contrast

On white

4.95

#CB3B40 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.24

#CB3B40 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CB3B40

4.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CB3B40	#FFFFFF	#000000	##FFFFFF
##CB3B40	1.00	4.95	4.24	4.95
#FFFFFF	4.95	1.00	21.00	1.00
#000000	4.24	21.00	1.00	21.00
##FFFFFF	4.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#645C3F

Deuteranopia (green-blind)

#887B3C

Tritanopia (blue-blind)

#DF053E

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #cb3b40;
/* rgb */ color: rgb(203, 59, 64);
/* oklch */ color: oklch(56.7% 0.181 23.3);

Tailwind

colors: {
  custom: {
    50: '#e37b75',
    500: '#cb3b40',
    950: '#000000',
  },
}

SCSS

$custom: #cb3b40;
$custom-light: #e37b75;
$custom-dark: #000000;

JSON

{
  "hex": "#cb3b40",
  "rgb": {
    "r": 203,
    "g": 59,
    "b": 64
  },
  "hsl": {
    "h": 357.917,
    "s": 58.065,
    "l": 51.373
  },
  "oklch": {
    "l": 0.56701,
    "c": 0.18056,
    "h": 23.3
  },
  "luminance": 0.16195
}

Semantic roles & 50–950 ramp

primary

#CB3B40

secondary

#91D1CE

accent

#E1DC47

background

#FFF7F7

surface

#FEEEED

border

#D6C9C8

text

#170A08

muted

#857C7B

Preview Lab

Preview with #CB3B40

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

Preview Lab → · Contrast checker → · Palette generator →