#28337D#28337D

#28337D is a dark, vivid blue. Relative luminance 0.043; OKLCH L 35.9% C 0.125 H 272.1°. Best body text is #FFFFFF at 11.29:1 contrast (WCAG AA passes).

Color values

HEX	#28337D
RGB	rgb(40, 51, 125)
HSL	hsl(232, 52%, 32%)
HSV	hsv(232, 68%, 49%)
CMYK	cmyk(68%, 59.2%, 0%, 51%)
CIE-LAB	lab(24.64, 21.23, -43.48)
CIE-LCH	lch(24.64, 48.39, 296.03°)
OKLab	oklab(35.86% 0.0046 -0.1251)
OKLCH	oklch(35.86% 0.125 272.1)
XYZ	xyz(5.7593, 4.2989, 19.9243)
Luminance	0.0430 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28337D #7D7228

analogous

#285E7D #28337D #47287D

triadic

#28337D #7D2833 #337D28

tetradic

#28337D #7D285E #7D7228 #287D47

square

#28337D #7D285E #7D7228 #287D47

split-complementary

#28337D #7D4728 #5E7D28

monochromatic

#0A0D20 #19204F #28337D #3746AB #5665C9

Accessibility & contrast

On white

11.29

#28337D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#28337D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28337D

11.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28337D	#FFFFFF	#000000	##FFFFFF
##28337D	1.00	11.29	1.86	11.29
#FFFFFF	11.29	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E80

Deuteranopia (green-blind)

#00377C

Tritanopia (blue-blind)

#004552

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #28337d;
/* rgb */ color: rgb(40, 51, 125);
/* oklch */ color: oklch(35.9% 0.125 272.1);

Tailwind

colors: {
  custom: {
    50: '#6d6aa3',
    500: '#28337d',
    950: '#000000',
  },
}

SCSS

$custom: #28337d;
$custom-light: #6d6aa3;
$custom-dark: #000000;

JSON

{
  "hex": "#28337d",
  "rgb": {
    "r": 40,
    "g": 51,
    "b": 125
  },
  "hsl": {
    "h": 232.235,
    "s": 51.515,
    "l": 32.353
  },
  "oklch": {
    "l": 0.35856,
    "c": 0.12519,
    "h": 272.1
  },
  "luminance": 0.04299
}

Semantic roles & 50–950 ramp

primary

#28337D

secondary

#AEA253

accent

#C94DDB

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#08060F

muted

#7A7A7F

Preview Lab

Preview with #28337D

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

Preview Lab → · Contrast checker → · Palette generator →