#28379D#28379D

#28379D is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.5% C 0.165 H 270.3°. Best body text is #FFFFFF at 9.89:1 contrast (WCAG AA passes).

Color values

HEX	#28379D
RGB	rgb(40, 55, 157)
HSL	hsl(232, 59%, 39%)
HSV	hsv(232, 75%, 62%)
CMYK	cmyk(74.5%, 65%, 0%, 38.4%)
CIE-LAB	lab(28.42, 30.57, -57.12)
CIE-LCH	lch(28.42, 64.78, 298.15°)
OKLab	oklab(39.51% 0.0008 -0.1651)
OKLCH	oklch(39.51% 0.165 270.3)
XYZ	xyz(8.3250, 5.6169, 32.5372)
Luminance	0.0562 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28379D #9D8E28

analogous

#28719D #28379D #53289D

triadic

#28379D #9D2837 #379D28

tetradic

#28379D #9D2871 #9D8E28 #289D53

square

#28379D #9D2871 #9D8E28 #289D53

split-complementary

#28379D #9D5328 #719D28

monochromatic

#0F153B #1C266C #28379D #3649CC #6776D8

Accessibility & contrast

On white

9.89

#28379D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#28379D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28379D

9.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28379D	#FFFFFF	#000000	##FFFFFF
##28379D	1.00	9.89	2.12	9.89
#FFFFFF	9.89	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049A0

Deuteranopia (green-blind)

#003E9B

Tritanopia (blue-blind)

#005265

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #28379d;
/* rgb */ color: rgb(40, 55, 157);
/* oklch */ color: oklch(39.5% 0.165 270.3);

Tailwind

colors: {
  custom: {
    50: '#746dbb',
    500: '#28379d',
    950: '#000000',
  },
}

SCSS

$custom: #28379d;
$custom-light: #746dbb;
$custom-dark: #000000;

JSON

{
  "hex": "#28379d",
  "rgb": {
    "r": 40,
    "g": 55,
    "b": 157
  },
  "hsl": {
    "h": 232.308,
    "s": 59.391,
    "l": 38.627
  },
  "oklch": {
    "l": 0.39512,
    "c": 0.16509,
    "h": 270.3
  },
  "luminance": 0.05618
}

Semantic roles & 50–950 ramp

primary

#28379D

secondary

#BEB362

accent

#CE45E3

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #28379D

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

Preview Lab → · Contrast checker → · Palette generator →