#D03739#D03739

#D03739 is a mid, vivid red. Relative luminance 0.164; OKLCH L 57.1% C 0.190 H 25.0°. Best body text is #FFFFFF at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#D03739
RGB	rgb(208, 55, 57)
HSL	hsl(359, 62%, 52%)
HSV	hsv(359, 74%, 82%)
CMYK	cmyk(0%, 73.6%, 72.6%, 18.4%)
CIE-LAB	lab(47.55, 59.25, 35.35)
CIE-LCH	lch(47.55, 69.00, 30.82°)
OKLab	oklab(57.07% 0.1721 0.0801)
OKLCH	oklch(57.07% 0.19 25)
XYZ	xyz(28.1203, 16.4420, 5.5631)
Luminance	0.1644 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#D03739 #37D0CE

analogous

#D03786 #D03739 #D08237

triadic

#D03739 #39D037 #3739D0

tetradic

#D03739 #86D037 #37D0CE #8237D0

square

#D03739 #86D037 #37D0CE #8237D0

split-complementary

#D03739 #37D082 #3786D0

monochromatic

#721B1C #A32628 #D03739 #DC696A #E79A9B

Accessibility & contrast

On white

4.90

#D03739 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.29

#D03739 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #D03739

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##D03739	#FFFFFF	#000000	##FFFFFF
##D03739	1.00	4.90	4.29	4.90
#FFFFFF	4.90	1.00	21.00	1.00
#000000	4.29	21.00	1.00	21.00
##FFFFFF	4.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#645C37

Deuteranopia (green-blind)

#8A7D34

Tritanopia (blue-blind)

#E5003A

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #d03739;
/* rgb */ color: rgb(208, 55, 57);
/* oklch */ color: oklch(57.1% 0.190 25.0);

Tailwind

colors: {
  custom: {
    50: '#e77970',
    500: '#d03739',
    950: '#000000',
  },
}

SCSS

$custom: #d03739;
$custom-light: #e77970;
$custom-dark: #000000;

JSON

{
  "hex": "#d03739",
  "rgb": {
    "r": 208,
    "g": 55,
    "b": 57
  },
  "hsl": {
    "h": 359.216,
    "s": 61.943,
    "l": 51.569
  },
  "oklch": {
    "l": 0.57072,
    "c": 0.18986,
    "h": 25
  },
  "luminance": 0.16438
}

Semantic roles & 50–950 ramp

primary

#D03739

secondary

#90D3D2

accent

#E5E343

background

#FFF7F6

surface

#FFEEEC

border

#D7C9C7

text

#180A07

muted

#867C7A

Preview Lab

Preview with #D03739

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

Preview Lab → · Contrast checker → · Palette generator →