#CB3F3A#CB3F3A

#CB3F3A is a mid, vivid red. Relative luminance 0.166; OKLCH L 57.0% C 0.178 H 26.5°. Best body text is #FFFFFF at 4.87:1 contrast (WCAG AA passes).

Color values

HEX#CB3F3A
RGBrgb(203, 63, 58)
HSLhsl(2, 58%, 51%)
HSVhsv(2, 71%, 80%)
CMYKcmyk(0%, 69%, 71.4%, 20.4%)
CIE-LABlab(47.70, 54.81, 34.72)
CIE-LCHlch(47.70, 64.88, 32.35°)
OKLaboklab(57.02% 0.1589 0.0792)
OKLCHoklch(57.02% 0.178 26.5)
XYZxyz(27.1728, 16.5610, 5.7680)
Luminance0.1656 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#CB3F3A #3AC6CB
analogous
#CB3A7D #CB3F3A #CB873A
triadic
#CB3F3A #3ACB3F #3F3ACB
tetradic
#CB3F3A #7DCB3A #3AC6CB #873ACB
square
#CB3F3A #7DCB3A #3AC6CB #873ACB
split-complementary
#CB3F3A #3ACB87 #3A7DCB
monochromatic
#6E201D #9E2E2A #CB3F3A #D86E6A #E59D9B

Accessibility & contrast

On white

4.87
#CB3F3A on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.31
#CB3F3A on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CB3F3A
4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##CB3F3A#FFFFFF#000000##FFFFFF
##CB3F3A1.004.874.314.87
#FFFFFF4.871.0021.001.00
#0000004.3121.001.0021.00
##FFFFFF4.871.0021.001.00

Color blindness preview

Protanopia (red-blind)
#675E38
Deuteranopia (green-blind)
#8A7C35
Tritanopia (blue-blind)
#DF113F
Achromatopsia (no color)
#717171

Design tokens & code

CSS
--color: #cb3f3a;
/* rgb */ color: rgb(203, 63, 58);
/* oklch */ color: oklch(57.0% 0.178 26.5);
Tailwind
colors: {
  custom: {
    50: '#e37c70',
    500: '#cb3f3a',
    950: '#000000',
  },
}
SCSS
$custom: #cb3f3a;
$custom-light: #e37c70;
$custom-dark: #000000;
JSON
{
  "hex": "#cb3f3a",
  "rgb": {
    "r": 203,
    "g": 63,
    "b": 58
  },
  "hsl": {
    "h": 2.069,
    "s": 58.233,
    "l": 51.176
  },
  "oklch": {
    "l": 0.57023,
    "c": 0.17755,
    "h": 26.5
  },
  "luminance": 0.16557
}

Semantic roles & 50–950 ramp

primary
#CB3F3A
secondary
#90CED0
accent
#DCE146
background
#FFF7F6
surface
#FEEEEC
border
#D6C9C7
text
#170A07
muted
#857C7A

Preview Lab

Preview with #CB3F3A

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

Preview Lab → · Contrast checker → · Palette generator →

#CB3F3A Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva