#DD3437#DD3437

#DD3437 is a mid, highly saturated red. Relative luminance 0.181; OKLCH L 59.1% C 0.205 H 25.4°. Best body text is #000000 at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#DD3437
RGB	rgb(221, 52, 55)
HSL	hsl(359, 71%, 54%)
HSV	hsv(359, 76%, 87%)
CMYK	cmyk(0%, 76.5%, 75.1%, 13.3%)
CIE-LAB	lab(49.63, 64.01, 39.50)
CIE-LCH	lch(49.63, 75.22, 31.68°)
OKLab	oklab(59.05% 0.1852 0.0879)
OKLCH	oklch(59.05% 0.205 25.4)
XYZ	xyz(31.7401, 18.1090, 5.4378)
Luminance	0.1810 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#DD3437 #34DDDA

analogous

#DD348B #DD3437 #DD8534

triadic

#DD3437 #37DD34 #3437DD

tetradic

#DD3437 #8BDD34 #34DDDA #8534DD

square

#DD3437 #8BDD34 #34DDDA #8534DD

split-complementary

#DD3437 #34DD85 #348BDD

monochromatic

#811618 #B51E21 #DD3437 #E6686B #EF9D9E

Accessibility & contrast

On white

4.54

#DD3437 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.62

#DD3437 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #DD3437

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##DD3437	#FFFFFF	#000000	##000000
##DD3437	1.00	4.54	4.62	4.62
#FFFFFF	4.54	1.00	21.00	21.00
#000000	4.62	21.00	1.00	1.00
##000000	4.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#685F35

Deuteranopia (green-blind)

#928330

Tritanopia (blue-blind)

#F30037

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #dd3437;
/* rgb */ color: rgb(221, 52, 55);
/* oklch */ color: oklch(59.1% 0.205 25.4);

Tailwind

colors: {
  custom: {
    50: '#f17a6e',
    500: '#dd3437',
    950: '#000000',
  },
}

SCSS

$custom: #dd3437;
$custom-light: #f17a6e;
$custom-dark: #000000;

JSON

{
  "hex": "#dd3437",
  "rgb": {
    "r": 221,
    "g": 52,
    "b": 55
  },
  "hsl": {
    "h": 358.935,
    "s": 71.308,
    "l": 53.529
  },
  "oklch": {
    "l": 0.59051,
    "c": 0.20499,
    "h": 25.4
  },
  "luminance": 0.18104
}

Semantic roles & 50–950 ramp

primary

#DD3437

secondary

#92DBD9

accent

#EEEB3A

background

#FFF7F6

surface

#FFEEEC

border

#D7C9C7

text

#190A07

muted

#867C7A

Preview Lab

Preview with #DD3437

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

Preview Lab → · Contrast checker → · Palette generator →