#21379E#21379E

#21379E is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.3% C 0.168 H 268.0°. Best body text is #FFFFFF at 9.98:1 contrast (WCAG AA passes).

Color values

HEX	#21379E
RGB	rgb(33, 55, 158)
HSL	hsl(229, 65%, 37%)
HSV	hsv(229, 79%, 62%)
CMYK	cmyk(79.1%, 65.2%, 0%, 38%)
CIE-LAB	lab(28.18, 30.18, -58.14)
CIE-LCH	lch(28.18, 65.51, 297.43°)
OKLab	oklab(39.27% -0.006 -0.1682)
OKLCH	oklch(39.27% 0.168 268)
XYZ	xyz(8.1628, 5.5234, 32.9770)
Luminance	0.0552 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21379E #9E8821

analogous

#21769E #21379E #4A219E

triadic

#21379E #9E2137 #379E21

tetradic

#21379E #9E2176 #9E8821 #219E4A

square

#21379E #9E2176 #9E8821 #219E4A

split-complementary

#21379E #9E4A21 #769E21

monochromatic

#0C1439 #16256B #21379E #2C49D1 #5C73DD

Accessibility & contrast

On white

9.98

#21379E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#21379E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21379E

9.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21379E	#FFFFFF	#000000	##FFFFFF
##21379E	1.00	9.98	2.10	9.98
#FFFFFF	9.98	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	9.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048A1

Deuteranopia (green-blind)

#003D9C

Tritanopia (blue-blind)

#005265

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #21379e;
/* rgb */ color: rgb(33, 55, 158);
/* oklch */ color: oklch(39.3% 0.168 268.0);

Tailwind

colors: {
  custom: {
    50: '#726dbc',
    500: '#21379e',
    950: '#000000',
  },
}

SCSS

$custom: #21379e;
$custom-light: #726dbc;
$custom-dark: #000000;

JSON

{
  "hex": "#21379e",
  "rgb": {
    "r": 33,
    "g": 55,
    "b": 158
  },
  "hsl": {
    "h": 229.44,
    "s": 65.445,
    "l": 37.451
  },
  "oklch": {
    "l": 0.39265,
    "c": 0.16836,
    "h": 268
  },
  "luminance": 0.05524
}

Semantic roles & 50–950 ramp

primary

#21379E

secondary

#C1AF59

accent

#CB3FE8

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #21379E

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

Preview Lab → · Contrast checker → · Palette generator →