#21368B#21368B

#21368B is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.3% C 0.143 H 268.0°. Best body text is #FFFFFF at 10.69:1 contrast (WCAG AA passes).

Color values

HEX	#21368B
RGB	rgb(33, 54, 139)
HSL	hsl(228, 62%, 34%)
HSV	hsv(228, 76%, 55%)
CMYK	cmyk(76.3%, 61.2%, 0%, 45.5%)
CIE-LAB	lab(26.23, 23.54, -49.66)
CIE-LCH	lch(26.23, 54.96, 295.36°)
OKLab	oklab(37.3% -0.005 -0.1434)
OKLCH	oklch(37.3% 0.143 268)
XYZ	xyz(6.6050, 4.8250, 25.0043)
Luminance	0.0483 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21368B #8B7621

analogous

#216B8B #21368B #41218B

triadic

#21368B #8B2136 #368B21

tetradic

#21368B #8B216B #8B7621 #218B41

square

#21368B #8B216B #8B7621 #218B41

split-complementary

#21368B #8B4121 #6B8B21

monochromatic

#0A1028 #15235A #21368B #2D49BC #516BD6

Accessibility & contrast

On white

10.69

#21368B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#21368B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21368B

10.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21368B	#FFFFFF	#000000	##FFFFFF
##21368B	1.00	10.69	1.97	10.69
#FFFFFF	10.69	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00438E

Deuteranopia (green-blind)

#003989

Tritanopia (blue-blind)

#004B5B

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #21368b;
/* rgb */ color: rgb(33, 54, 139);
/* oklch */ color: oklch(37.3% 0.143 268.0);

Tailwind

colors: {
  custom: {
    50: '#6d6cae',
    500: '#21368b',
    950: '#000000',
  },
}

SCSS

$custom: #21368b;
$custom-light: #6d6cae;
$custom-dark: #000000;

JSON

{
  "hex": "#21368b",
  "rgb": {
    "r": 33,
    "g": 54,
    "b": 139
  },
  "hsl": {
    "h": 228.113,
    "s": 61.628,
    "l": 33.725
  },
  "oklch": {
    "l": 0.37304,
    "c": 0.14349,
    "h": 268
  },
  "luminance": 0.04826
}

Semantic roles & 50–950 ramp

primary

#21368B

secondary

#B9A44F

accent

#C543E5

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #21368B

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

Preview Lab → · Contrast checker → · Palette generator →