#21307E#21307E

#21307E is a dark, vivid blue. Relative luminance 0.039; OKLCH L 34.9% C 0.133 H 269.8°. Best body text is #FFFFFF at 11.74:1 contrast (WCAG AA passes).

Color values

HEX	#21307E
RGB	rgb(33, 48, 126)
HSL	hsl(230, 58%, 31%)
HSV	hsv(230, 74%, 49%)
CMYK	cmyk(73.8%, 61.9%, 0%, 50.6%)
CIE-LAB	lab(23.48, 22.61, -46.01)
CIE-LCH	lch(23.48, 51.27, 296.17°)
OKLab	oklab(34.91% -0.0005 -0.1327)
OKLCH	oklch(34.91% 0.133 269.8)
XYZ	xyz(5.4488, 3.9430, 20.2085)
Luminance	0.0394 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21307E #7E6F21

analogous

#215E7E #21307E #40217E

triadic

#21307E #7E2130 #307E21

tetradic

#21307E #7E215E #7E6F21 #217E40

square

#21307E #7E215E #7E6F21 #217E40

split-complementary

#21307E #7E4021 #5E7E21

monochromatic

#080B1D #141E4E #21307E #2E42AE #4A5FD0

Accessibility & contrast

On white

11.74

#21307E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#21307E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21307E

11.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21307E	#FFFFFF	#000000	##FFFFFF
##21307E	1.00	11.74	1.79	11.74
#FFFFFF	11.74	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C81

Deuteranopia (green-blind)

#00347C

Tritanopia (blue-blind)

#004452

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #21307e;
/* rgb */ color: rgb(33, 48, 126);
/* oklch */ color: oklch(34.9% 0.133 269.8);

Tailwind

colors: {
  custom: {
    50: '#6a68a4',
    500: '#21307e',
    950: '#000000',
  },
}

SCSS

$custom: #21307e;
$custom-light: #6a68a4;
$custom-dark: #000000;

JSON

{
  "hex": "#21307e",
  "rgb": {
    "r": 33,
    "g": 48,
    "b": 126
  },
  "hsl": {
    "h": 230.323,
    "s": 58.491,
    "l": 31.176
  },
  "oklch": {
    "l": 0.34912,
    "c": 0.13275,
    "h": 269.8
  },
  "luminance": 0.03944
}

Semantic roles & 50–950 ramp

primary

#21307E

secondary

#B1A04A

accent

#C946E2

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #21307E

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

Preview Lab → · Contrast checker → · Palette generator →