#21187B#21187B

#21187B is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.5% C 0.157 H 275.8°. Best body text is #FFFFFF at 14.18:1 contrast (WCAG AA passes).

Color values

HEX	#21187B
RGB	rgb(33, 24, 123)
HSL	hsl(245, 67%, 29%)
HSV	hsv(245, 80%, 48%)
CMYK	cmyk(73.2%, 80.5%, 0%, 51.8%)
CIE-LAB	lab(17.49, 36.90, -53.95)
CIE-LCH	lch(17.49, 65.36, 304.38°)
OKLab	oklab(30.49% 0.0158 -0.156)
OKLCH	oklch(30.49% 0.157 275.8)
XYZ	xyz(4.5278, 2.4062, 18.9609)
Luminance	0.0241 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21187B #727B18

analogous

#18417B #21187B #53187B

triadic

#21187B #7B2118 #187B21

tetradic

#21187B #7B1841 #727B18 #187B53

square

#21187B #7B1841 #727B18 #187B53

split-complementary

#21187B #7B5318 #417B18

monochromatic

#07051A #130E48 #21187B #2F22AE #4436D8

Accessibility & contrast

On white

14.18

#21187B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.48

#21187B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21187B

14.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21187B	#FFFFFF	#000000	##FFFFFF
##21187B	1.00	14.18	1.48	14.18
#FFFFFF	14.18	1.00	21.00	1.00
#000000	1.48	21.00	1.00	21.00
##FFFFFF	14.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F7E

Deuteranopia (green-blind)

#002679

Tritanopia (blue-blind)

#003649

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #21187b;
/* rgb */ color: rgb(33, 24, 123);
/* oklch */ color: oklch(30.5% 0.157 275.8);

Tailwind

colors: {
  custom: {
    50: '#6c57a2',
    500: '#21187b',
    950: '#000000',
  },
}

SCSS

$custom: #21187b;
$custom-light: #6c57a2;
$custom-dark: #000000;

JSON

{
  "hex": "#21187b",
  "rgb": {
    "r": 33,
    "g": 24,
    "b": 123
  },
  "hsl": {
    "h": 245.455,
    "s": 67.347,
    "l": 28.824
  },
  "oklch": {
    "l": 0.30487,
    "c": 0.15675,
    "h": 275.8
  },
  "luminance": 0.02407
}

Semantic roles & 50–950 ramp

primary

#21187B

secondary

#A5B03F

accent

#EA3EDB

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #21187B

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

Preview Lab → · Contrast checker → · Palette generator →