#21307F#21307F

#21307F is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.0% C 0.134 H 269.8°. Best body text is #FFFFFF at 11.71:1 contrast (WCAG AA passes).

Color values

HEX	#21307F
RGB	rgb(33, 48, 127)
HSL	hsl(230, 59%, 31%)
HSV	hsv(230, 74%, 50%)
CMYK	cmyk(74%, 62.2%, 0%, 50.2%)
CIE-LAB	lab(23.57, 23.00, -46.50)
CIE-LCH	lch(23.57, 51.88, 296.32°)
OKLab	oklab(35% -0.0005 -0.1342)
OKLCH	oklch(35% 0.134 269.8)
XYZ	xyz(5.5136, 3.9690, 20.5501)
Luminance	0.0397 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21307F #7F7021

analogous

#215F7F #21307F #41217F

triadic

#21307F #7F2130 #307F21

tetradic

#21307F #7F215F #7F7021 #217F41

square

#21307F #7F215F #7F7021 #217F41

split-complementary

#21307F #7F4121 #5F7F21

monochromatic

#080B1E #141E4E #21307F #2E42B0 #4A60D0

Accessibility & contrast

On white

11.71

#21307F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#21307F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21307F

11.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21307F	#FFFFFF	#000000	##FFFFFF
##21307F	1.00	11.71	1.79	11.71
#FFFFFF	11.71	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D82

Deuteranopia (green-blind)

#00347D

Tritanopia (blue-blind)

#004452

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #21307f;
/* rgb */ color: rgb(33, 48, 127);
/* oklch */ color: oklch(35.0% 0.134 269.8);

Tailwind

colors: {
  custom: {
    50: '#6a68a5',
    500: '#21307f',
    950: '#000000',
  },
}

SCSS

$custom: #21307f;
$custom-light: #6a68a5;
$custom-dark: #000000;

JSON

{
  "hex": "#21307f",
  "rgb": {
    "r": 33,
    "g": 48,
    "b": 127
  },
  "hsl": {
    "h": 230.426,
    "s": 58.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.35003,
    "c": 0.13419,
    "h": 269.8
  },
  "luminance": 0.0397
}

Semantic roles & 50–950 ramp

primary

#21307F

secondary

#B2A14A

accent

#C946E2

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #21307F

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

Preview Lab → · Contrast checker → · Palette generator →