#21377C#21377C

#21377C is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.2% C 0.120 H 266.9°. Best body text is #FFFFFF at 11.04:1 contrast (WCAG AA passes).

Color values

HEX	#21377C
RGB	rgb(33, 55, 124)
HSL	hsl(225, 58%, 31%)
HSV	hsv(225, 73%, 49%)
CMYK	cmyk(73.4%, 55.6%, 0%, 51.4%)
CIE-LAB	lab(25.29, 16.93, -41.81)
CIE-LCH	lch(25.29, 45.10, 292.04°)
OKLab	oklab(36.22% -0.0065 -0.1203)
OKLCH	oklch(36.22% 0.12 266.9)
XYZ	xyz(5.6302, 4.5104, 19.6387)
Luminance	0.0451 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21377C #7C6621

analogous

#21647C #21377C #39217C

triadic

#21377C #7C2137 #377C21

tetradic

#21377C #7C2164 #7C6621 #217C39

square

#21377C #7C2164 #7C6621 #217C39

split-complementary

#21377C #7C3921 #647C21

monochromatic

#070C1B #14224C #21377C #2E4CAC #4969CF

Accessibility & contrast

On white

11.04

#21377C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#21377C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21377C

11.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21377C	#FFFFFF	#000000	##FFFFFF
##21377C	1.00	11.04	1.90	11.04
#FFFFFF	11.04	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#04407E

Deuteranopia (green-blind)

#00387B

Tritanopia (blue-blind)

#004854

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #21377c;
/* rgb */ color: rgb(33, 55, 124);
/* oklch */ color: oklch(36.2% 0.120 266.9);

Tailwind

colors: {
  custom: {
    50: '#696da2',
    500: '#21377c',
    950: '#000000',
  },
}

SCSS

$custom: #21377c;
$custom-light: #696da2;
$custom-dark: #000000;

JSON

{
  "hex": "#21377c",
  "rgb": {
    "r": 33,
    "g": 55,
    "b": 124
  },
  "hsl": {
    "h": 225.495,
    "s": 57.962,
    "l": 30.784
  },
  "oklch": {
    "l": 0.36217,
    "c": 0.12047,
    "h": 266.9
  },
  "luminance": 0.04511
}

Semantic roles & 50–950 ramp

primary

#21377C

secondary

#AF964A

accent

#BC47E1

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #21377C

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

Preview Lab → · Contrast checker → · Palette generator →