#21237C#21237C

#21237C is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.3% C 0.146 H 273.6°. Best body text is #FFFFFF at 13.16:1 contrast (WCAG AA passes).

Color values

HEX	#21237C
RGB	rgb(33, 35, 124)
HSL	hsl(239, 58%, 31%)
HSV	hsv(239, 73%, 49%)
CMYK	cmyk(73.4%, 71.8%, 0%, 51.4%)
CIE-LAB	lab(19.96, 30.63, -50.50)
CIE-LCH	lch(19.96, 59.06, 301.24°)
OKLab	oklab(32.28% 0.0092 -0.146)
OKLCH	oklch(32.28% 0.146 273.6)
XYZ	xyz(4.8651, 2.9802, 19.3837)
Luminance	0.0298 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21237C #7C7A21

analogous

#21507C #21237C #4C217C

triadic

#21237C #7C2123 #237C21

tetradic

#21237C #7C2150 #7C7A21 #217C4C

square

#21237C #7C2150 #7C7A21 #217C4C

split-complementary

#21237C #7C4C21 #507C21

monochromatic

#07081B #14154C #21237C #2E31AC #494CCF

Accessibility & contrast

On white

13.16

#21237C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#21237C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21237C

13.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21237C	#FFFFFF	#000000	##FFFFFF
##21237C	1.00	13.16	1.60	13.16
#FFFFFF	13.16	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00347F

Deuteranopia (green-blind)

#002C7A

Tritanopia (blue-blind)

#003B4C

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #21237c;
/* rgb */ color: rgb(33, 35, 124);
/* oklch */ color: oklch(32.3% 0.146 273.6);

Tailwind

colors: {
  custom: {
    50: '#6b5ea3',
    500: '#21237c',
    950: '#000000',
  },
}

SCSS

$custom: #21237c;
$custom-light: #6b5ea3;
$custom-dark: #000000;

JSON

{
  "hex": "#21237c",
  "rgb": {
    "r": 33,
    "g": 35,
    "b": 124
  },
  "hsl": {
    "h": 238.681,
    "s": 57.962,
    "l": 30.784
  },
  "oklch": {
    "l": 0.32279,
    "c": 0.14629,
    "h": 273.6
  },
  "luminance": 0.02981
}

Semantic roles & 50–950 ramp

primary

#21237C

secondary

#AFAD4A

accent

#DE47E1

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08040F

muted

#7A797F

Preview Lab

Preview with #21237C

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

Preview Lab → · Contrast checker → · Palette generator →