#E3403B#E3403B

#E3403B is a mid, highly saturated red. Relative luminance 0.203; OKLCH L 61.2% C 0.201 H 26.8°. Best body text is #000000 at 5.06:1 contrast (WCAG AA passes).

Color values

HEX	#E3403B
RGB	rgb(227, 64, 59)
HSL	hsl(2, 75%, 56%)
HSV	hsv(2, 74%, 89%)
CMYK	cmyk(0%, 71.8%, 74%, 11%)
CIE-LAB	lab(52.20, 62.05, 40.42)
CIE-LCH	lch(52.20, 74.05, 33.08°)
OKLab	oklab(61.18% 0.1791 0.0905)
OKLCH	oklch(61.18% 0.201 26.8)
XYZ	xyz(34.3053, 20.3187, 6.2524)
Luminance	0.2031 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#E3403B #3BDEE3

analogous

#E33B8A #E3403B #E3943B

triadic

#E3403B #3BE340 #403BE3

tetradic

#E3403B #8AE33B #3BDEE3 #943BE3

square

#E3403B #8AE33B #3BDEE3 #943BE3

split-complementary

#E3403B #3BE394 #3B8AE3

monochromatic

#8F1814 #C5211C #E3403B #EB7471 #F2A8A6

Accessibility & contrast

On white

4.15

#E3403B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.06

#E3403B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #E3403B

5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##E3403B	#FFFFFF	#000000	##000000
##E3403B	1.00	4.15	5.06	5.06
#FFFFFF	4.15	1.00	21.00	21.00
#000000	5.06	21.00	1.00	1.00
##000000	5.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#706639

Deuteranopia (green-blind)

#998935

Tritanopia (blue-blind)

#FA0041

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #e3403b;
/* rgb */ color: rgb(227, 64, 59);
/* oklch */ color: oklch(61.2% 0.201 26.8);

Tailwind

colors: {
  custom: {
    50: '#f58071',
    500: '#e3403b',
    950: '#000000',
  },
}

SCSS

$custom: #e3403b;
$custom-light: #f58071;
$custom-dark: #000000;

JSON

{
  "hex": "#e3403b",
  "rgb": {
    "r": 227,
    "g": 64,
    "b": 59
  },
  "hsl": {
    "h": 1.786,
    "s": 75,
    "l": 56.078
  },
  "oklch": {
    "l": 0.61179,
    "c": 0.20067,
    "h": 26.8
  },
  "luminance": 0.20313
}

Semantic roles & 50–950 ramp

primary

#E3403B

secondary

#9ADEE0

accent

#ECF236

background

#FFF8F6

surface

#FFEFEC

border

#D7CAC7

text

#190B08

muted

#867C7B

Preview Lab

Preview with #E3403B

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

Preview Lab → · Contrast checker → · Palette generator →