#21307C#21307C

#21307C is a dark, vivid blue. Relative luminance 0.039; OKLCH L 34.7% C 0.130 H 269.8°. Best body text is #FFFFFF at 11.81:1 contrast (WCAG AA passes).

Color values

HEX	#21307C
RGB	rgb(33, 48, 124)
HSL	hsl(230, 58%, 31%)
HSV	hsv(230, 73%, 49%)
CMYK	cmyk(73.4%, 61.3%, 0%, 51.4%)
CIE-LAB	lab(23.31, 21.83, -45.03)
CIE-LCH	lch(23.31, 50.04, 295.87°)
OKLab	oklab(34.73% -0.0005 -0.1299)
OKLCH	oklch(34.73% 0.13 269.8)
XYZ	xyz(5.3210, 3.8919, 19.5357)
Luminance	0.0389 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21307C #7C6D21

analogous

#215D7C #21307C #3F217C

triadic

#21307C #7C2130 #307C21

tetradic

#21307C #7C215D #7C6D21 #217C3F

square

#21307C #7C215D #7C6D21 #217C3F

split-complementary

#21307C #7C3F21 #5D7C21

monochromatic

#070B1B #141D4C #21307C #2E43AC #495FCF

Accessibility & contrast

On white

11.81

#21307C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#21307C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21307C

11.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21307C	#FFFFFF	#000000	##FFFFFF
##21307C	1.00	11.81	1.78	11.81
#FFFFFF	11.81	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C7F

Deuteranopia (green-blind)

#00337B

Tritanopia (blue-blind)

#004351

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #21307c;
/* rgb */ color: rgb(33, 48, 124);
/* oklch */ color: oklch(34.7% 0.130 269.8);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#21307c",
  "rgb": {
    "r": 33,
    "g": 48,
    "b": 124
  },
  "hsl": {
    "h": 230.11,
    "s": 57.962,
    "l": 30.784
  },
  "oklch": {
    "l": 0.34732,
    "c": 0.12986,
    "h": 269.8
  },
  "luminance": 0.03892
}

Semantic roles & 50–950 ramp

primary

#21307C

secondary

#AF9E4A

accent

#C847E1

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #21307C

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

Preview Lab → · Contrast checker → · Palette generator →