#21398B#21398B

#21398B is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.9% C 0.140 H 267.0°. Best body text is #FFFFFF at 10.38:1 contrast (WCAG AA passes).

Color values

HEX	#21398B
RGB	rgb(33, 57, 139)
HSL	hsl(226, 62%, 34%)
HSV	hsv(226, 76%, 55%)
CMYK	cmyk(76.3%, 59%, 0%, 45.5%)
CIE-LAB	lab(27.05, 21.47, -48.32)
CIE-LCH	lch(27.05, 52.88, 293.95°)
OKLab	oklab(37.92% -0.0073 -0.1394)
OKLCH	oklch(37.92% 0.14 267)
XYZ	xyz(6.7489, 5.1129, 25.0523)
Luminance	0.0511 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21398B #8B7321

analogous

#216E8B #21398B #3E218B

triadic

#21398B #8B2139 #398B21

tetradic

#21398B #8B216E #8B7321 #218B3E

square

#21398B #8B216E #8B7321 #218B3E

split-complementary

#21398B #8B3E21 #6E8B21

monochromatic

#0A1028 #15255A #21398B #2D4DBC #516FD6

Accessibility & contrast

On white

10.38

#21398B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#21398B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21398B

10.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21398B	#FFFFFF	#000000	##FFFFFF
##21398B	1.00	10.38	2.02	10.38
#FFFFFF	10.38	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00458E

Deuteranopia (green-blind)

#003B89

Tritanopia (blue-blind)

#004D5C

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #21398b;
/* rgb */ color: rgb(33, 57, 139);
/* oklch */ color: oklch(37.9% 0.140 267.0);

Tailwind

colors: {
  custom: {
    50: '#6d6fae',
    500: '#21398b',
    950: '#000000',
  },
}

SCSS

$custom: #21398b;
$custom-light: #6d6fae;
$custom-dark: #000000;

JSON

{
  "hex": "#21398b",
  "rgb": {
    "r": 33,
    "g": 57,
    "b": 139
  },
  "hsl": {
    "h": 226.415,
    "s": 61.628,
    "l": 33.725
  },
  "oklch": {
    "l": 0.37919,
    "c": 0.13961,
    "h": 267
  },
  "luminance": 0.05114
}

Semantic roles & 50–950 ramp

primary

#21398B

secondary

#B9A14F

accent

#C043E5

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #21398B

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

Preview Lab → · Contrast checker → · Palette generator →