#28188A#28188A

#28188A is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.8% C 0.174 H 277.2°. Best body text is #FFFFFF at 13.23:1 contrast (WCAG AA passes).

Color values

HEX	#28188A
RGB	rgb(40, 24, 138)
HSL	hsl(248, 70%, 32%)
HSV	hsv(248, 83%, 54%)
CMYK	cmyk(71%, 82.6%, 0%, 45.9%)
CIE-LAB	lab(19.80, 42.41, -59.60)
CIE-LCH	lch(19.80, 73.15, 305.44°)
OKLab	oklab(32.75% 0.0217 -0.1722)
OKLCH	oklch(32.75% 0.174 277.2)
XYZ	xyz(5.7877, 2.9388, 24.3021)
Luminance	0.0294 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28188A #7A8A18

analogous

#18418A #28188A #61188A

triadic

#28188A #8A2818 #188A28

tetradic

#28188A #8A1841 #7A8A18 #188A61

square

#28188A #8A1841 #7A8A18 #188A61

split-complementary

#28188A #8A6118 #418A18

monochromatic

#0A0622 #190F56 #28188A #3721BE #553FDE

Accessibility & contrast

On white

13.23

#28188A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#28188A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28188A

13.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28188A	#FFFFFF	#000000	##FFFFFF
##28188A	1.00	13.23	1.59	13.23
#FFFFFF	13.23	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00348D

Deuteranopia (green-blind)

#002B88

Tritanopia (blue-blind)

#003B52

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #28188a;
/* rgb */ color: rgb(40, 24, 138);
/* oklch */ color: oklch(32.8% 0.174 277.2);

Tailwind

colors: {
  custom: {
    50: '#7259ad',
    500: '#28188a',
    950: '#000000',
  },
}

SCSS

$custom: #28188a;
$custom-light: #7259ad;
$custom-dark: #000000;

JSON

{
  "hex": "#28188a",
  "rgb": {
    "r": 40,
    "g": 24,
    "b": 138
  },
  "hsl": {
    "h": 248.421,
    "s": 70.37,
    "l": 31.765
  },
  "oklch": {
    "l": 0.32752,
    "c": 0.17357,
    "h": 277.2
  },
  "luminance": 0.02939
}

Semantic roles & 50–950 ramp

primary

#28188A

secondary

#ACBD40

accent

#ED3BD4

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #28188A

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

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