#21388D#21388D

#21388D is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.9% C 0.144 H 267.4°. Best body text is #FFFFFF at 10.42:1 contrast (WCAG AA passes).

Color values

HEX	#21388D
RGB	rgb(33, 56, 141)
HSL	hsl(227, 62%, 34%)
HSV	hsv(227, 77%, 55%)
CMYK	cmyk(76.6%, 60.3%, 0%, 44.7%)
CIE-LAB	lab(26.94, 22.94, -49.74)
CIE-LCH	lch(26.94, 54.78, 294.76°)
OKLab	oklab(37.89% -0.0065 -0.1436)
OKLCH	oklch(37.89% 0.144 267.4)
XYZ	xyz(6.8474, 5.0740, 25.8126)
Luminance	0.0508 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21388D #8D7621

analogous

#216E8D #21388D #40218D

triadic

#21388D #8D2138 #388D21

tetradic

#21388D #8D216E #8D7621 #218D40

square

#21388D #8D216E #8D7621 #218D40

split-complementary

#21388D #8D4021 #6E8D21

monochromatic

#0A112A #15245B #21388D #2D4CBF #526ED6

Accessibility & contrast

On white

10.42

#21388D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#21388D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21388D

10.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21388D	#FFFFFF	#000000	##FFFFFF
##21388D	1.00	10.42	2.02	10.42
#FFFFFF	10.42	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004590

Deuteranopia (green-blind)

#003B8B

Tritanopia (blue-blind)

#004D5D

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #21388d;
/* rgb */ color: rgb(33, 56, 141);
/* oklch */ color: oklch(37.9% 0.144 267.4);

Tailwind

colors: {
  custom: {
    50: '#6d6eaf',
    500: '#21388d',
    950: '#000000',
  },
}

SCSS

$custom: #21388d;
$custom-light: #6d6eaf;
$custom-dark: #000000;

JSON

{
  "hex": "#21388d",
  "rgb": {
    "r": 33,
    "g": 56,
    "b": 141
  },
  "hsl": {
    "h": 227.222,
    "s": 62.069,
    "l": 34.118
  },
  "oklch": {
    "l": 0.37889,
    "c": 0.14374,
    "h": 267.4
  },
  "luminance": 0.05075
}

Semantic roles & 50–950 ramp

primary

#21388D

secondary

#BAA350

accent

#C343E5

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #21388D

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

Preview Lab → · Contrast checker → · Palette generator →