#21188B#21188B

#21188B is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.4% C 0.177 H 273.7°. Best body text is #FFFFFF at 13.39:1 contrast (WCAG AA passes).

Color values

HEX	#21188B
RGB	rgb(33, 24, 139)
HSL	hsl(245, 71%, 32%)
HSV	hsv(245, 83%, 55%)
CMYK	cmyk(76.3%, 82.7%, 0%, 45.5%)
CIE-LAB	lab(19.39, 42.15, -60.91)
CIE-LCH	lch(19.39, 74.08, 304.68°)
OKLab	oklab(32.37% 0.0115 -0.1762)
OKLCH	oklch(32.37% 0.177 273.7)
XYZ	xyz(5.6125, 2.8401, 24.6735)
Luminance	0.0284 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21188B #828B18

analogous

#18488B #21188B #5B188B

triadic

#21188B #8B2118 #188B21

tetradic

#21188B #8B1848 #828B18 #188B5B

square

#21188B #8B1848 #828B18 #188B5B

split-complementary

#21188B #8B5B18 #488B18

monochromatic

#080623 #150F57 #21188B #2D21BF #4C3FDE

Accessibility & contrast

On white

13.39

#21188B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#21188B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21188B

13.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21188B	#FFFFFF	#000000	##FFFFFF
##21188B	1.00	13.39	1.57	13.39
#FFFFFF	13.39	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00348E

Deuteranopia (green-blind)

#002989

Tritanopia (blue-blind)

#003C52

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #21188b;
/* rgb */ color: rgb(33, 24, 139);
/* oklch */ color: oklch(32.4% 0.177 273.7);

Tailwind

colors: {
  custom: {
    50: '#7058ae',
    500: '#21188b',
    950: '#000000',
  },
}

SCSS

$custom: #21188b;
$custom-light: #7058ae;
$custom-dark: #000000;

JSON

{
  "hex": "#21188b",
  "rgb": {
    "r": 33,
    "g": 24,
    "b": 139
  },
  "hsl": {
    "h": 244.696,
    "s": 70.552,
    "l": 31.961
  },
  "oklch": {
    "l": 0.32369,
    "c": 0.17657,
    "h": 273.7
  },
  "luminance": 0.02841
}

Semantic roles & 50–950 ramp

primary

#21188B

secondary

#B4BE40

accent

#ED3ADF

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#090310

muted

#7B787F

Preview Lab

Preview with #21188B

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

Preview Lab → · Contrast checker → · Palette generator →