#C51B45#C51B45

#C51B45 is a mid, vivid red. Relative luminance 0.131; OKLCH L 53.3% C 0.200 H 15.3°. Best body text is #FFFFFF at 5.81:1 contrast (WCAG AA passes).

Color values

HEX	#C51B45
RGB	rgb(197, 27, 69)
HSL	hsl(345, 76%, 44%)
HSV	hsv(345, 86%, 77%)
CMYK	cmyk(0%, 86.3%, 65%, 22.7%)
CIE-LAB	lab(42.90, 64.33, 21.94)
CIE-LCH	lch(42.90, 67.97, 18.83°)
OKLab	oklab(53.31% 0.1925 0.0526)
OKLCH	oklch(53.31% 0.2 15.3)
XYZ	xyz(24.4948, 13.0877, 6.8655)
Luminance	0.1308 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C51B45 #1BC59B

analogous

#C51B9A #C51B45 #C5461B

triadic

#C51B45 #45C51B #1B45C5

tetradic

#C51B45 #9AC51B #1BC59B #461BC5

square

#C51B45 #9AC51B #1BC59B #461BC5

split-complementary

#C51B45 #1BC546 #1B9AC5

monochromatic

#590C1F #8F1432 #C51B45 #E43963 #EB6F8E

Accessibility & contrast

On white

5.81

#C51B45 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.62

#C51B45 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C51B45

5.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C51B45	#FFFFFF	#000000	##FFFFFF
##C51B45	1.00	5.81	3.62	5.81
#FFFFFF	5.81	1.00	21.00	1.00
#000000	3.62	21.00	1.00	21.00
##FFFFFF	5.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#524F45

Deuteranopia (green-blind)

#7C7140

Tritanopia (blue-blind)

#D8002F

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #c51b45;
/* rgb */ color: rgb(197, 27, 69);
/* oklch */ color: oklch(53.3% 0.200 15.3);

Tailwind

colors: {
  custom: {
    50: '#df6e78',
    500: '#c51b45',
    950: '#000000',
  },
}

SCSS

$custom: #c51b45;
$custom-light: #df6e78;
$custom-dark: #000000;

JSON

{
  "hex": "#c51b45",
  "rgb": {
    "r": 197,
    "g": 27,
    "b": 69
  },
  "hsl": {
    "h": 345.176,
    "s": 75.893,
    "l": 43.922
  },
  "oklch": {
    "l": 0.53305,
    "c": 0.1995,
    "h": 15.3
  },
  "luminance": 0.13084
}

Semantic roles & 50–950 ramp

primary

#C51B45

secondary

#6AD1B8

accent

#F2C435

background

#FEF7F7

surface

#FDEDED

border

#D5C8C8

text

#170808

muted

#857B7B

Preview Lab

Preview with #C51B45

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

Preview Lab → · Contrast checker → · Palette generator →