#28178A#28178A

#28178A is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.6% C 0.174 H 277.3°. Best body text is #FFFFFF at 13.29:1 contrast (WCAG AA passes).

Color values

HEX	#28178A
RGB	rgb(40, 23, 138)
HSL	hsl(249, 71%, 32%)
HSV	hsv(249, 83%, 54%)
CMYK	cmyk(71%, 83.3%, 0%, 45.9%)
CIE-LAB	lab(19.63, 42.89, -59.87)
CIE-LCH	lch(19.63, 73.65, 305.62°)
OKLab	oklab(32.64% 0.0222 -0.173)
OKLCH	oklch(32.64% 0.174 277.3)
XYZ	xyz(5.7674, 2.8984, 24.2953)
Luminance	0.0290 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28178A #798A17

analogous

#173F8A #28178A #62178A

triadic

#28178A #8A2817 #178A28

tetradic

#28178A #8A173F #798A17 #178A62

square

#28178A #8A173F #798A17 #178A62

split-complementary

#28178A #8A6217 #3F8A17

monochromatic

#0A0621 #190E56 #28178A #3720BE #553DDF

Accessibility & contrast

On white

13.29

#28178A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#28178A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28178A

13.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28178A	#FFFFFF	#000000	##FFFFFF
##28178A	1.00	13.29	1.58	13.29
#FFFFFF	13.29	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00348D

Deuteranopia (green-blind)

#002B88

Tritanopia (blue-blind)

#003B51

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #28178a;
/* rgb */ color: rgb(40, 23, 138);
/* oklch */ color: oklch(32.6% 0.174 277.3);

Tailwind

colors: {
  custom: {
    50: '#7258ad',
    500: '#28178a',
    950: '#000000',
  },
}

SCSS

$custom: #28178a;
$custom-light: #7258ad;
$custom-dark: #000000;

JSON

{
  "hex": "#28178a",
  "rgb": {
    "r": 40,
    "g": 23,
    "b": 138
  },
  "hsl": {
    "h": 248.87,
    "s": 71.429,
    "l": 31.569
  },
  "oklch": {
    "l": 0.32638,
    "c": 0.1744,
    "h": 277.3
  },
  "luminance": 0.02899
}

Semantic roles & 50–950 ramp

primary

#28178A

secondary

#ABBE3F

accent

#EE3AD3

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #28178A

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

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