#28237E#28237E

#28237E is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.0% C 0.147 H 277.1°. Best body text is #FFFFFF at 12.87:1 contrast (WCAG AA passes).

Color values

HEX	#28237E
RGB	rgb(40, 35, 126)
HSL	hsl(243, 57%, 32%)
HSV	hsv(243, 72%, 49%)
CMYK	cmyk(68.3%, 72.2%, 0%, 50.6%)
CIE-LAB	lab(20.67, 32.25, -50.59)
CIE-LCH	lch(20.67, 60.00, 302.51°)
OKLab	oklab(32.98% 0.0181 -0.1461)
OKLCH	oklch(32.98% 0.147 277.1)
XYZ	xyz(5.2408, 3.1591, 20.0682)
Luminance	0.0316 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28237E #797E23

analogous

#234C7E #28237E #56237E

triadic

#28237E #7E2823 #237E28

tetradic

#28237E #7E234C #797E23 #237E56

square

#28237E #7E234C #797E23 #237E56

split-complementary

#28237E #7E5623 #4C7E23

monochromatic

#0A081E #19164E #28237E #3730AE #554ECE

Accessibility & contrast

On white

12.87

#28237E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#28237E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28237E

12.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28237E	#FFFFFF	#000000	##FFFFFF
##28237E	1.00	12.87	1.63	12.87
#FFFFFF	12.87	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003681

Deuteranopia (green-blind)

#002E7C

Tritanopia (blue-blind)

#003C4D

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #28237e;
/* rgb */ color: rgb(40, 35, 126);
/* oklch */ color: oklch(33.0% 0.147 277.1);

Tailwind

colors: {
  custom: {
    50: '#6e5fa4',
    500: '#28237e',
    950: '#000000',
  },
}

SCSS

$custom: #28237e;
$custom-light: #6e5fa4;
$custom-dark: #000000;

JSON

{
  "hex": "#28237e",
  "rgb": {
    "r": 40,
    "g": 35,
    "b": 126
  },
  "hsl": {
    "h": 243.297,
    "s": 56.522,
    "l": 31.569
  },
  "oklch": {
    "l": 0.32979,
    "c": 0.14719,
    "h": 277.1
  },
  "luminance": 0.0316
}

Semantic roles & 50–950 ramp

primary

#28237E

secondary

#ABB04C

accent

#E048D7

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08040F

muted

#7B797F

Preview Lab

Preview with #28237E

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

Preview Lab → · Contrast checker → · Palette generator →