#28188C#28188C

#28188C is a dark, vivid blue. Relative luminance 0.030; OKLCH L 33.0% C 0.176 H 276.9°. Best body text is #FFFFFF at 13.13:1 contrast (WCAG AA passes).

Color values

HEX	#28188C
RGB	rgb(40, 24, 140)
HSL	hsl(248, 71%, 32%)
HSV	hsv(248, 83%, 55%)
CMYK	cmyk(71.4%, 82.9%, 0%, 45.1%)
CIE-LAB	lab(20.03, 43.04, -60.46)
CIE-LCH	lch(20.03, 74.21, 305.44°)
OKLab	oklab(32.98% 0.0211 -0.1747)
OKLCH	oklch(32.98% 0.176 276.9)
XYZ	xyz(5.9338, 2.9973, 25.0717)
Luminance	0.0300 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28188C #7C8C18

analogous

#18428C #28188C #62188C

triadic

#28188C #8C2818 #188C28

tetradic

#28188C #8C1842 #7C8C18 #188C62

square

#28188C #8C1842 #7C8C18 #188C62

split-complementary

#28188C #8C6218 #428C18

monochromatic

#0A0624 #190F58 #28188C #3721C0 #5640DE

Accessibility & contrast

On white

13.13

#28188C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#28188C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28188C

13.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28188C	#FFFFFF	#000000	##FFFFFF
##28188C	1.00	13.13	1.60	13.13
#FFFFFF	13.13	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00358F

Deuteranopia (green-blind)

#002B8A

Tritanopia (blue-blind)

#003C53

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #28188c;
/* rgb */ color: rgb(40, 24, 140);
/* oklch */ color: oklch(33.0% 0.176 276.9);

Tailwind

colors: {
  custom: {
    50: '#7359af',
    500: '#28188c',
    950: '#000000',
  },
}

SCSS

$custom: #28188c;
$custom-light: #7359af;
$custom-dark: #000000;

JSON

{
  "hex": "#28188c",
  "rgb": {
    "r": 40,
    "g": 24,
    "b": 140
  },
  "hsl": {
    "h": 248.276,
    "s": 70.732,
    "l": 32.157
  },
  "oklch": {
    "l": 0.32984,
    "c": 0.17599,
    "h": 276.9
  },
  "luminance": 0.02998
}

Semantic roles & 50–950 ramp

primary

#28188C

secondary

#ADBF41

accent

#ED3AD5

background

#F7F5FA

surface

#EEE9F5

border

#C9C5CF

text

#090411

muted

#7B7980

Preview Lab

Preview with #28188C

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

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