#21399A#21399A

#21399A is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.3% C 0.161 H 267.5°. Best body text is #FFFFFF at 9.92:1 contrast (WCAG AA passes).

Color values

HEX	#21399A
RGB	rgb(33, 57, 154)
HSL	hsl(228, 65%, 37%)
HSV	hsv(228, 79%, 60%)
CMYK	cmyk(78.6%, 63%, 0%, 39.6%)
CIE-LAB	lab(28.33, 27.31, -55.46)
CIE-LCH	lch(28.33, 61.82, 296.22°)
OKLab	oklab(39.27% -0.0071 -0.1603)
OKLCH	oklch(39.27% 0.161 267.5)
XYZ	xyz(7.9210, 5.5818, 31.2255)
Luminance	0.0558 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21399A #9A8221

analogous

#21769A #21399A #46219A

triadic

#21399A #9A2139 #399A21

tetradic

#21399A #9A2176 #9A8221 #219A46

square

#21399A #9A2176 #9A8221 #219A46

split-complementary

#21399A #9A4621 #769A21

monochromatic

#0B1435 #162668 #21399A #2C4CCC #5A74DC

Accessibility & contrast

On white

9.92

#21399A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#21399A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21399A

9.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21399A	#FFFFFF	#000000	##FFFFFF
##21399A	1.00	9.92	2.12	9.92
#FFFFFF	9.92	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00499D

Deuteranopia (green-blind)

#003D98

Tritanopia (blue-blind)

#005264

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #21399a;
/* rgb */ color: rgb(33, 57, 154);
/* oklch */ color: oklch(39.3% 0.161 267.5);

Tailwind

colors: {
  custom: {
    50: '#716fb9',
    500: '#21399a',
    950: '#000000',
  },
}

SCSS

$custom: #21399a;
$custom-light: #716fb9;
$custom-dark: #000000;

JSON

{
  "hex": "#21399a",
  "rgb": {
    "r": 33,
    "g": 57,
    "b": 154
  },
  "hsl": {
    "h": 228.099,
    "s": 64.706,
    "l": 36.667
  },
  "oklch": {
    "l": 0.39268,
    "c": 0.16051,
    "h": 267.5
  },
  "luminance": 0.05583
}

Semantic roles & 50–950 ramp

primary

#21399A

secondary

#C0AB57

accent

#C640E8

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #21399A

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

Preview Lab → · Contrast checker → · Palette generator →