#CB3F3C#CB3F3C

#CB3F3C is a mid, vivid red. Relative luminance 0.166; OKLCH L 57.1% C 0.177 H 25.8°. Best body text is #FFFFFF at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#CB3F3C
RGB	rgb(203, 63, 60)
HSL	hsl(1, 58%, 52%)
HSV	hsv(1, 70%, 80%)
CMYK	cmyk(0%, 69%, 70.4%, 20.4%)
CIE-LAB	lab(47.73, 54.90, 33.60)
CIE-LCH	lch(47.73, 64.36, 31.46°)
OKLab	oklab(57.05% 0.1596 0.0771)
OKLCH	oklch(57.05% 0.177 25.8)
XYZ	xyz(27.2247, 16.5818, 6.0411)
Luminance	0.1658 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CB3F3C #3CC8CB

analogous

#CB3C81 #CB3F3C #CB873C

triadic

#CB3F3C #3CCB3F #3F3CCB

tetradic

#CB3F3C #81CB3C #3CC8CB #873CCB

square

#CB3F3C #81CB3C #3CC8CB #873CCB

split-complementary

#CB3F3C #3CCB87 #3C81CB

monochromatic

#6F1F1E #9F2D2A #CB3F3C #D86F6C #E59E9D

Accessibility & contrast

On white

4.87

#CB3F3C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.32

#CB3F3C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CB3F3C

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CB3F3C	#FFFFFF	#000000	##FFFFFF
##CB3F3C	1.00	4.87	4.32	4.87
#FFFFFF	4.87	1.00	21.00	1.00
#000000	4.32	21.00	1.00	21.00
##FFFFFF	4.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#665E3A

Deuteranopia (green-blind)

#897C37

Tritanopia (blue-blind)

#DF1240

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #cb3f3c;
/* rgb */ color: rgb(203, 63, 60);
/* oklch */ color: oklch(57.1% 0.177 25.8);

Tailwind

colors: {
  custom: {
    50: '#e37d72',
    500: '#cb3f3c',
    950: '#000000',
  },
}

SCSS

$custom: #cb3f3c;
$custom-light: #e37d72;
$custom-dark: #000000;

JSON

{
  "hex": "#cb3f3c",
  "rgb": {
    "r": 203,
    "g": 63,
    "b": 60
  },
  "hsl": {
    "h": 1.259,
    "s": 57.895,
    "l": 51.569
  },
  "oklch": {
    "l": 0.57052,
    "c": 0.17727,
    "h": 25.8
  },
  "luminance": 0.16578
}

Semantic roles & 50–950 ramp

primary

#CB3F3C

secondary

#92D0D1

accent

#DEE147

background

#FFF7F6

surface

#FEEEEC

border

#D6C9C7

text

#170A08

muted

#857C7B

Preview Lab

Preview with #CB3F3C

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

Preview Lab → · Contrast checker → · Palette generator →