#21387E#21387E

#21387E is a dark, vivid blue. Relative luminance 0.047; OKLCH L 36.6% C 0.122 H 266.6°. Best body text is #FFFFFF at 10.87:1 contrast (WCAG AA passes).

Color values

HEX	#21387E
RGB	rgb(33, 56, 126)
HSL	hsl(225, 58%, 31%)
HSV	hsv(225, 74%, 49%)
CMYK	cmyk(73.8%, 55.6%, 0%, 50.6%)
CIE-LAB	lab(25.74, 17.02, -42.35)
CIE-LCH	lch(25.74, 45.64, 291.90°)
OKLab	oklab(36.6% -0.0073 -0.1219)
OKLCH	oklch(36.6% 0.122 266.6)
XYZ	xyz(5.8060, 4.6574, 20.3276)
Luminance	0.0466 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21387E #7E6721

analogous

#21667E #21387E #38217E

triadic

#21387E #7E2138 #387E21

tetradic

#21387E #7E2166 #7E6721 #217E38

square

#21387E #7E2166 #7E6721 #217E38

split-complementary

#21387E #7E3821 #667E21

monochromatic

#080D1D #14224E #21387E #2E4EAE #4A6BD0

Accessibility & contrast

On white

10.87

#21387E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#21387E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21387E

10.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21387E	#FFFFFF	#000000	##FFFFFF
##21387E	1.00	10.87	1.93	10.87
#FFFFFF	10.87	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#044180

Deuteranopia (green-blind)

#00397D

Tritanopia (blue-blind)

#004955

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #21387e;
/* rgb */ color: rgb(33, 56, 126);
/* oklch */ color: oklch(36.6% 0.122 266.6);

Tailwind

colors: {
  custom: {
    50: '#6a6ea4',
    500: '#21387e',
    950: '#000000',
  },
}

SCSS

$custom: #21387e;
$custom-light: #6a6ea4;
$custom-dark: #000000;

JSON

{
  "hex": "#21387e",
  "rgb": {
    "r": 33,
    "g": 56,
    "b": 126
  },
  "hsl": {
    "h": 225.161,
    "s": 58.491,
    "l": 31.176
  },
  "oklch": {
    "l": 0.36601,
    "c": 0.12209,
    "h": 266.6
  },
  "luminance": 0.04658
}

Semantic roles & 50–950 ramp

primary

#21387E

secondary

#B1974A

accent

#BB46E2

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #21387E

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

Preview Lab → · Contrast checker → · Palette generator →