#21378E#21378E

#21378E is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.8% C 0.146 H 267.8°. Best body text is #FFFFFF at 10.49:1 contrast (WCAG AA passes).

Color values

HEX	#21378E
RGB	rgb(33, 55, 142)
HSL	hsl(228, 62%, 34%)
HSV	hsv(228, 77%, 56%)
CMYK	cmyk(76.8%, 61.3%, 0%, 44.3%)
CIE-LAB	lab(26.76, 24.02, -50.66)
CIE-LCH	lch(26.76, 56.07, 295.37°)
OKLab	oklab(37.78% -0.0057 -0.1463)
OKLCH	oklch(37.78% 0.146 267.8)
XYZ	xyz(6.8742, 5.0080, 26.1903)
Luminance	0.0501 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21378E #8E7821

analogous

#216E8E #21378E #42218E

triadic

#21378E #8E2137 #378E21

tetradic

#21378E #8E216E #8E7821 #218E42

square

#21378E #8E216E #8E7821 #218E42

split-complementary

#21378E #8E4221 #6E8E21

monochromatic

#0A112B #15245C #21378E #2D4AC0 #526DD7

Accessibility & contrast

On white

10.49

#21378E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#21378E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21378E

10.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21378E	#FFFFFF	#000000	##FFFFFF
##21378E	1.00	10.49	2.00	10.49
#FFFFFF	10.49	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004491

Deuteranopia (green-blind)

#003A8C

Tritanopia (blue-blind)

#004D5D

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #21378e;
/* rgb */ color: rgb(33, 55, 142);
/* oklch */ color: oklch(37.8% 0.146 267.8);

Tailwind

colors: {
  custom: {
    50: '#6e6db0',
    500: '#21378e',
    950: '#000000',
  },
}

SCSS

$custom: #21378e;
$custom-light: #6e6db0;
$custom-dark: #000000;

JSON

{
  "hex": "#21378e",
  "rgb": {
    "r": 33,
    "g": 55,
    "b": 142
  },
  "hsl": {
    "h": 227.89,
    "s": 62.286,
    "l": 34.314
  },
  "oklch": {
    "l": 0.37776,
    "c": 0.14643,
    "h": 267.8
  },
  "luminance": 0.05009
}

Semantic roles & 50–950 ramp

primary

#21378E

secondary

#BAA550

accent

#C442E5

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080711

muted

#7B7A80

Preview Lab

Preview with #21378E

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

Preview Lab → · Contrast checker → · Palette generator →