#28179D#28179D

#28179D is a dark, vivid blue. Relative luminance 0.035; OKLCH L 34.9% C 0.197 H 274.8°. Best body text is #FFFFFF at 12.36:1 contrast (WCAG AA passes).

Color values

HEX	#28179D
RGB	rgb(40, 23, 157)
HSL	hsl(248, 74%, 35%)
HSV	hsv(248, 85%, 62%)
CMYK	cmyk(74.5%, 85.4%, 0%, 38.4%)
CIE-LAB	lab(21.94, 48.68, -67.82)
CIE-LCH	lch(21.94, 83.48, 305.67°)
OKLab	oklab(34.89% 0.0164 -0.196)
OKLCH	oklch(34.89% 0.197 274.8)
XYZ	xyz(7.2653, 3.4975, 32.1839)
Luminance	0.0350 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28179D #8C9D17

analogous

#17499D #28179D #6B179D

triadic

#28179D #9D2817 #179D28

tetradic

#28179D #9D1749 #8C9D17 #179D6B

square

#28179D #9D1749 #8C9D17 #179D6B

split-complementary

#28179D #9D6B17 #499D17

monochromatic

#0D0732 #1A0F68 #28179D #361FD2 #5E4AE4

Accessibility & contrast

On white

12.36

#28179D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#28179D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28179D

12.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28179D	#FFFFFF	#000000	##FFFFFF
##28179D	1.00	12.36	1.70	12.36
#FFFFFF	12.36	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003AA1

Deuteranopia (green-blind)

#002E9B

Tritanopia (blue-blind)

#00435D

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #28179d;
/* rgb */ color: rgb(40, 23, 157);
/* oklch */ color: oklch(34.9% 0.197 274.8);

Tailwind

colors: {
  custom: {
    50: '#775abb',
    500: '#28179d',
    950: '#000000',
  },
}

SCSS

$custom: #28179d;
$custom-light: #775abb;
$custom-dark: #000000;

JSON

{
  "hex": "#28179d",
  "rgb": {
    "r": 40,
    "g": 23,
    "b": 157
  },
  "hsl": {
    "h": 247.612,
    "s": 74.444,
    "l": 35.294
  },
  "oklch": {
    "l": 0.34891,
    "c": 0.19673,
    "h": 274.8
  },
  "luminance": 0.03498
}

Semantic roles & 50–950 ramp

primary

#28179D

secondary

#B6C64A

accent

#F137D9

background

#F8F5FB

surface

#EFE9F7

border

#CAC5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #28179D

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

Preview Lab → · Contrast checker → · Palette generator →