#21307D#21307D

#21307D is a dark, vivid blue. Relative luminance 0.039; OKLCH L 34.8% C 0.131 H 269.8°. Best body text is #FFFFFF at 11.77:1 contrast (WCAG AA passes).

Color values

HEX	#21307D
RGB	rgb(33, 48, 125)
HSL	hsl(230, 58%, 31%)
HSV	hsv(230, 74%, 49%)
CMYK	cmyk(73.6%, 61.6%, 0%, 51%)
CIE-LAB	lab(23.40, 22.22, -45.52)
CIE-LCH	lch(23.40, 50.65, 296.02°)
OKLab	oklab(34.82% -0.0005 -0.1313)
OKLCH	oklch(34.82% 0.131 269.8)
XYZ	xyz(5.3846, 3.9174, 19.8704)
Luminance	0.0392 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21307D #7D6E21

analogous

#215E7D #21307D #40217D

triadic

#21307D #7D2130 #307D21

tetradic

#21307D #7D215E #7D6E21 #217D40

square

#21307D #7D215E #7D6E21 #217D40

split-complementary

#21307D #7D4021 #5E7D21

monochromatic

#070B1C #141D4D #21307D #2E43AD #495FCF

Accessibility & contrast

On white

11.77

#21307D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#21307D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21307D

11.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21307D	#FFFFFF	#000000	##FFFFFF
##21307D	1.00	11.77	1.78	11.77
#FFFFFF	11.77	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C80

Deuteranopia (green-blind)

#00347B

Tritanopia (blue-blind)

#004351

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #21307d;
/* rgb */ color: rgb(33, 48, 125);
/* oklch */ color: oklch(34.8% 0.131 269.8);

Tailwind

colors: {
  custom: {
    50: '#6a68a3',
    500: '#21307d',
    950: '#000000',
  },
}

SCSS

$custom: #21307d;
$custom-light: #6a68a3;
$custom-dark: #000000;

JSON

{
  "hex": "#21307d",
  "rgb": {
    "r": 33,
    "g": 48,
    "b": 125
  },
  "hsl": {
    "h": 230.217,
    "s": 58.228,
    "l": 30.98
  },
  "oklch": {
    "l": 0.34822,
    "c": 0.13131,
    "h": 269.8
  },
  "luminance": 0.03918
}

Semantic roles & 50–950 ramp

primary

#21307D

secondary

#B09F4A

accent

#C846E1

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #21307D

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

Preview Lab → · Contrast checker → · Palette generator →