#21148B#21148B

#21148B is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.9% C 0.180 H 274.1°. Best body text is #FFFFFF at 13.66:1 contrast (WCAG AA passes).

Color values

HEX	#21148B
RGB	rgb(33, 20, 139)
HSL	hsl(247, 75%, 31%)
HSV	hsv(247, 86%, 55%)
CMYK	cmyk(76.3%, 85.6%, 0%, 45.5%)
CIE-LAB	lab(18.74, 44.05, -61.99)
CIE-LCH	lch(18.74, 76.05, 305.40°)
OKLab	oklab(31.92% 0.0128 -0.1792)
OKLCH	oklch(31.92% 0.18 274.1)
XYZ	xyz(5.5360, 2.6872, 24.6480)
Luminance	0.0269 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21148B #7E8B14

analogous

#14428B #21148B #5C148B

triadic

#21148B #8B2114 #148B21

tetradic

#21148B #8B1442 #7E8B14 #148B5C

square

#21148B #8B1442 #7E8B14 #148B5C

split-complementary

#21148B #8B5C14 #428B14

monochromatic

#080520 #140C55 #21148B #2E1CC1 #4A37E2

Accessibility & contrast

On white

13.66

#21148B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#21148B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21148B

13.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21148B	#FFFFFF	#000000	##FFFFFF
##21148B	1.00	13.66	1.54	13.66
#FFFFFF	13.66	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00338E

Deuteranopia (green-blind)

#002889

Tritanopia (blue-blind)

#003B52

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #21148b;
/* rgb */ color: rgb(33, 20, 139);
/* oklch */ color: oklch(31.9% 0.180 274.1);

Tailwind

colors: {
  custom: {
    50: '#7056ae',
    500: '#21148b',
    950: '#000000',
  },
}

SCSS

$custom: #21148b;
$custom-light: #7056ae;
$custom-dark: #000000;

JSON

{
  "hex": "#21148b",
  "rgb": {
    "r": 33,
    "g": 20,
    "b": 139
  },
  "hsl": {
    "h": 246.555,
    "s": 74.843,
    "l": 31.176
  },
  "oklch": {
    "l": 0.31922,
    "c": 0.17969,
    "h": 274.1
  },
  "luminance": 0.02688
}

Semantic roles & 50–950 ramp

primary

#21148B

secondary

#B1BF3C

accent

#F136DD

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#090310

muted

#7B787F

Preview Lab

Preview with #21148B

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

Preview Lab → · Contrast checker → · Palette generator →