#28237D#28237D

#28237D is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.9% C 0.146 H 277.2°. Best body text is #FFFFFF at 12.91:1 contrast (WCAG AA passes).

Color values

HEX	#28237D
RGB	rgb(40, 35, 125)
HSL	hsl(243, 56%, 31%)
HSV	hsv(243, 72%, 49%)
CMYK	cmyk(68%, 72%, 0%, 51%)
CIE-LAB	lab(20.57, 31.90, -50.12)
CIE-LCH	lch(20.57, 59.41, 302.47°)
OKLab	oklab(32.88% 0.0183 -0.1447)
OKLCH	oklch(32.88% 0.146 277.2)
XYZ	xyz(5.1766, 3.1334, 19.7301)
Luminance	0.0313 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28237D #787D23

analogous

#234B7D #28237D #55237D

triadic

#28237D #7D2823 #237D28

tetradic

#28237D #7D234B #787D23 #237D55

square

#28237D #7D234B #787D23 #237D55

split-complementary

#28237D #7D5523 #4B7D23

monochromatic

#09081D #19164D #28237D #3730AD #544DCD

Accessibility & contrast

On white

12.91

#28237D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#28237D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28237D

12.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28237D	#FFFFFF	#000000	##FFFFFF
##28237D	1.00	12.91	1.63	12.91
#FFFFFF	12.91	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003580

Deuteranopia (green-blind)

#002E7B

Tritanopia (blue-blind)

#003B4D

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #28237d;
/* rgb */ color: rgb(40, 35, 125);
/* oklch */ color: oklch(32.9% 0.146 277.2);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#28237d",
  "rgb": {
    "r": 40,
    "g": 35,
    "b": 125
  },
  "hsl": {
    "h": 243.333,
    "s": 56.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.32877,
    "c": 0.14584,
    "h": 277.2
  },
  "luminance": 0.03134
}

Semantic roles & 50–950 ramp

primary

#28237D

secondary

#AAAF4C

accent

#E048D7

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08040F

muted

#7B797F

Preview Lab

Preview with #28237D

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

Preview Lab → · Contrast checker → · Palette generator →