#21187C#21187C

#21187C is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.6% C 0.158 H 275.6°. Best body text is #FFFFFF at 14.13:1 contrast (WCAG AA passes).

Color values

HEX	#21187C
RGB	rgb(33, 24, 124)
HSL	hsl(245, 68%, 29%)
HSV	hsv(245, 81%, 49%)
CMYK	cmyk(73.4%, 80.6%, 0%, 51.4%)
CIE-LAB	lab(17.61, 37.24, -54.39)
CIE-LCH	lch(17.61, 65.92, 304.40°)
OKLab	oklab(30.6% 0.0155 -0.1573)
OKLCH	oklch(30.6% 0.158 275.6)
XYZ	xyz(4.5907, 2.4314, 19.2922)
Luminance	0.0243 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21187C #737C18

analogous

#18417C #21187C #53187C

triadic

#21187C #7C2118 #187C21

tetradic

#21187C #7C1841 #737C18 #187C53

square

#21187C #7C1841 #737C18 #187C53

split-complementary

#21187C #7C5318 #417C18

monochromatic

#07051A #130E49 #21187C #2F22AF #4536D8

Accessibility & contrast

On white

14.13

#21187C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#21187C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21187C

14.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21187C	#FFFFFF	#000000	##FFFFFF
##21187C	1.00	14.13	1.49	14.13
#FFFFFF	14.13	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F7F

Deuteranopia (green-blind)

#00277A

Tritanopia (blue-blind)

#00364A

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #21187c;
/* rgb */ color: rgb(33, 24, 124);
/* oklch */ color: oklch(30.6% 0.158 275.6);

Tailwind

colors: {
  custom: {
    50: '#6c57a3',
    500: '#21187c',
    950: '#000000',
  },
}

SCSS

$custom: #21187c;
$custom-light: #6c57a3;
$custom-dark: #000000;

JSON

{
  "hex": "#21187c",
  "rgb": {
    "r": 33,
    "g": 24,
    "b": 124
  },
  "hsl": {
    "h": 245.4,
    "s": 67.568,
    "l": 29.02
  },
  "oklch": {
    "l": 0.30602,
    "c": 0.15802,
    "h": 275.6
  },
  "luminance": 0.02432
}

Semantic roles & 50–950 ramp

primary

#21187C

secondary

#A6B13F

accent

#EA3DDB

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #21187C

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

Preview Lab → · Contrast checker → · Palette generator →