#D3403F#D3403F

#D3403F is a mid, vivid red. Relative luminance 0.179; OKLCH L 58.5% C 0.184 H 25.2°. Best body text is #FFFFFF at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#D3403F
RGB	rgb(211, 64, 63)
HSL	hsl(0, 63%, 54%)
HSV	hsv(0, 70%, 83%)
CMYK	cmyk(0%, 69.7%, 70.1%, 17.3%)
CIE-LAB	lab(49.35, 57.23, 34.13)
CIE-LCH	lch(49.35, 66.63, 30.81°)
OKLab	oklab(58.54% 0.1666 0.0785)
OKLCH	oklch(58.54% 0.184 25.2)
XYZ	xyz(29.5978, 17.8789, 6.5941)
Luminance	0.1787 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#D3403F #3FD2D3

analogous

#D33F88 #D3403F #D38A3F

triadic

#D3403F #3FD340 #403FD3

tetradic

#D3403F #88D33F #3FD2D3 #8A3FD3

square

#D3403F #88D33F #3FD2D3 #8A3FD3

split-complementary

#D3403F #3FD38A #3F88D3

monochromatic

#7B1D1C #AD2928 #D3403F #DE7271 #EAA3A3

Accessibility & contrast

On white

4.59

#D3403F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.58

#D3403F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #D3403F

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##D3403F	#FFFFFF	#000000	##FFFFFF
##D3403F	1.00	4.59	4.58	4.59
#FFFFFF	4.59	1.00	21.00	1.00
#000000	4.58	21.00	1.00	21.00
##FFFFFF	4.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A613D

Deuteranopia (green-blind)

#8E813A

Tritanopia (blue-blind)

#E80D41

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #d3403f;
/* rgb */ color: rgb(211, 64, 63);
/* oklch */ color: oklch(58.5% 0.184 25.2);

Tailwind

colors: {
  custom: {
    50: '#e97e74',
    500: '#d3403f',
    950: '#000000',
  },
}

SCSS

$custom: #d3403f;
$custom-light: #e97e74;
$custom-dark: #000000;

JSON

{
  "hex": "#d3403f",
  "rgb": {
    "r": 211,
    "g": 64,
    "b": 63
  },
  "hsl": {
    "h": 0.405,
    "s": 62.712,
    "l": 53.725
  },
  "oklch": {
    "l": 0.58541,
    "c": 0.18416,
    "h": 25.2
  },
  "luminance": 0.17875
}

Semantic roles & 50–950 ramp

primary

#D3403F

secondary

#97D6D7

accent

#E5E642

background

#FFF8F7

surface

#FFEFED

border

#D7CAC8

text

#180B08

muted

#867C7B

Preview Lab

Preview with #D3403F

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

Preview Lab → · Contrast checker → · Palette generator →