#28178B#28178B

#28178B is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.8% C 0.176 H 277.1°. Best body text is #FFFFFF at 13.24:1 contrast (WCAG AA passes).

Color values

HEX	#28178B
RGB	rgb(40, 23, 139)
HSL	hsl(249, 72%, 32%)
HSV	hsv(249, 83%, 55%)
CMYK	cmyk(71.2%, 83.5%, 0%, 45.5%)
CIE-LAB	lab(19.75, 43.20, -60.30)
CIE-LCH	lch(19.75, 74.18, 305.62°)
OKLab	oklab(32.76% 0.0219 -0.1742)
OKLCH	oklch(32.76% 0.176 277.1)
XYZ	xyz(5.8402, 2.9275, 24.6784)
Luminance	0.0293 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28178B #7A8B17

analogous

#17408B #28178B #62178B

triadic

#28178B #8B2817 #178B28

tetradic

#28178B #8B1740 #7A8B17 #178B62

square

#28178B #8B1740 #7A8B17 #178B62

split-complementary

#28178B #8B6217 #408B17

monochromatic

#0A0622 #190E56 #28178B #3720C0 #553DDF

Accessibility & contrast

On white

13.24

#28178B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#28178B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28178B

13.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28178B	#FFFFFF	#000000	##FFFFFF
##28178B	1.00	13.24	1.59	13.24
#FFFFFF	13.24	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00348E

Deuteranopia (green-blind)

#002B89

Tritanopia (blue-blind)

#003B52

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #28178b;
/* rgb */ color: rgb(40, 23, 139);
/* oklch */ color: oklch(32.8% 0.176 277.1);

Tailwind

colors: {
  custom: {
    50: '#7358ae',
    500: '#28178b',
    950: '#000000',
  },
}

SCSS

$custom: #28178b;
$custom-light: #7358ae;
$custom-dark: #000000;

JSON

{
  "hex": "#28178b",
  "rgb": {
    "r": 40,
    "g": 23,
    "b": 139
  },
  "hsl": {
    "h": 248.793,
    "s": 71.605,
    "l": 31.765
  },
  "oklch": {
    "l": 0.32755,
    "c": 0.1756,
    "h": 277.1
  },
  "luminance": 0.02928
}

Semantic roles & 50–950 ramp

primary

#28178B

secondary

#ACBF3F

accent

#EE39D4

background

#F7F5FA

surface

#EEE9F5

border

#C9C5CF

text

#090410

muted

#7B797F

Preview Lab

Preview with #28178B

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

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