#21178D#21178D

#21178D is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.5% C 0.180 H 273.6°. Best body text is #FFFFFF at 13.36:1 contrast (WCAG AA passes).

Color values

HEX	#21178D
RGB	rgb(33, 23, 141)
HSL	hsl(245, 72%, 32%)
HSV	hsv(245, 84%, 55%)
CMYK	cmyk(76.6%, 83.7%, 0%, 44.7%)
CIE-LAB	lab(19.47, 43.28, -62.04)
CIE-LCH	lch(19.47, 75.64, 304.90°)
OKLab	oklab(32.49% 0.0113 -0.1794)
OKLCH	oklch(32.49% 0.18 273.6)
XYZ	xyz(5.7397, 2.8586, 25.4434)
Luminance	0.0286 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21178D #838D17

analogous

#17488D #21178D #5C178D

triadic

#21178D #8D2117 #178D21

tetradic

#21178D #8D1748 #838D17 #178D5C

square

#21178D #8D1748 #838D17 #178D5C

split-complementary

#21178D #8D5C17 #488D17

monochromatic

#080624 #150E58 #21178D #2D20C2 #4C3FE0

Accessibility & contrast

On white

13.36

#21178D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#21178D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21178D

13.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21178D	#FFFFFF	#000000	##FFFFFF
##21178D	1.00	13.36	1.57	13.36
#FFFFFF	13.36	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003490

Deuteranopia (green-blind)

#00298B

Tritanopia (blue-blind)

#003D53

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #21178d;
/* rgb */ color: rgb(33, 23, 141);
/* oklch */ color: oklch(32.5% 0.180 273.6);

Tailwind

colors: {
  custom: {
    50: '#7058b0',
    500: '#21178d',
    950: '#000000',
  },
}

SCSS

$custom: #21178d;
$custom-light: #7058b0;
$custom-dark: #000000;

JSON

{
  "hex": "#21178d",
  "rgb": {
    "r": 33,
    "g": 23,
    "b": 141
  },
  "hsl": {
    "h": 245.085,
    "s": 71.951,
    "l": 32.157
  },
  "oklch": {
    "l": 0.32493,
    "c": 0.17979,
    "h": 273.6
  },
  "luminance": 0.02859
}

Semantic roles & 50–950 ramp

primary

#21178D

secondary

#B5C040

accent

#EF39DF

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #21178D

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

Preview Lab → · Contrast checker → · Palette generator →