#28188F#28188F

#28188F is a dark, vivid blue. Relative luminance 0.031; OKLCH L 33.3% C 0.180 H 276.5°. Best body text is #FFFFFF at 12.98:1 contrast (WCAG AA passes).

Color values

HEX	#28188F
RGB	rgb(40, 24, 143)
HSL	hsl(248, 71%, 33%)
HSV	hsv(248, 83%, 56%)
CMYK	cmyk(72%, 83.2%, 0%, 43.9%)
CIE-LAB	lab(20.39, 43.97, -61.74)
CIE-LCH	lch(20.39, 75.80, 305.46°)
OKLab	oklab(33.33% 0.0202 -0.1784)
OKLCH	oklch(33.33% 0.18 276.5)
XYZ	xyz(6.1580, 3.0870, 26.2526)
Luminance	0.0309 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28188F #7F8F18

analogous

#18448F #28188F #63188F

triadic

#28188F #8F2818 #188F28

tetradic

#28188F #8F1844 #7F8F18 #188F63

square

#28188F #8F1844 #7F8F18 #188F63

split-complementary

#28188F #8F6318 #448F18

monochromatic

#0B0626 #190F5B #28188F #3721C3 #5742DF

Accessibility & contrast

On white

12.98

#28188F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#28188F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28188F

12.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28188F	#FFFFFF	#000000	##FFFFFF
##28188F	1.00	12.98	1.62	12.98
#FFFFFF	12.98	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003692

Deuteranopia (green-blind)

#002C8D

Tritanopia (blue-blind)

#003D55

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #28188f;
/* rgb */ color: rgb(40, 24, 143);
/* oklch */ color: oklch(33.3% 0.180 276.5);

Tailwind

colors: {
  custom: {
    50: '#7359b1',
    500: '#28188f',
    950: '#000000',
  },
}

SCSS

$custom: #28188f;
$custom-light: #7359b1;
$custom-dark: #000000;

JSON

{
  "hex": "#28188f",
  "rgb": {
    "r": 40,
    "g": 24,
    "b": 143
  },
  "hsl": {
    "h": 248.067,
    "s": 71.257,
    "l": 32.745
  },
  "oklch": {
    "l": 0.33334,
    "c": 0.17958,
    "h": 276.5
  },
  "luminance": 0.03088
}

Semantic roles & 50–950 ramp

primary

#28188F

secondary

#AFC043

accent

#EE3AD6

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #28188F

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

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