#21359B#21359B

#21359B is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.6% C 0.167 H 268.4°. Best body text is #FFFFFF at 10.26:1 contrast (WCAG AA passes).

Color values

HEX	#21359B
RGB	rgb(33, 53, 155)
HSL	hsl(230, 65%, 37%)
HSV	hsv(230, 79%, 61%)
CMYK	cmyk(78.7%, 65.8%, 0%, 39.2%)
CIE-LAB	lab(27.39, 30.37, -57.60)
CIE-LCH	lch(27.39, 65.12, 297.80°)
OKLab	oklab(38.61% -0.0047 -0.1667)
OKLCH	oklch(38.61% 0.167 268.4)
XYZ	xyz(7.8146, 5.2352, 31.6026)
Luminance	0.0524 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21359B #9B8721

analogous

#21729B #21359B #4A219B

triadic

#21359B #9B2135 #359B21

tetradic

#21359B #9B2172 #9B8721 #219B4A

square

#21359B #9B2172 #9B8721 #219B4A

split-complementary

#21359B #9B4A21 #729B21

monochromatic

#0C1236 #162469 #21359B #2C46CD #5A70DC

Accessibility & contrast

On white

10.26

#21359B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#21359B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21359B

10.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21359B	#FFFFFF	#000000	##FFFFFF
##21359B	1.00	10.26	2.05	10.26
#FFFFFF	10.26	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00479E

Deuteranopia (green-blind)

#003B99

Tritanopia (blue-blind)

#005063

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #21359b;
/* rgb */ color: rgb(33, 53, 155);
/* oklch */ color: oklch(38.6% 0.167 268.4);

Tailwind

colors: {
  custom: {
    50: '#716cb9',
    500: '#21359b',
    950: '#000000',
  },
}

SCSS

$custom: #21359b;
$custom-light: #716cb9;
$custom-dark: #000000;

JSON

{
  "hex": "#21359b",
  "rgb": {
    "r": 33,
    "g": 53,
    "b": 155
  },
  "hsl": {
    "h": 230.164,
    "s": 64.894,
    "l": 36.863
  },
  "oklch": {
    "l": 0.38605,
    "c": 0.16674,
    "h": 268.4
  },
  "luminance": 0.05236
}

Semantic roles & 50–950 ramp

primary

#21359B

secondary

#C0AF58

accent

#CC40E8

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #21359B

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

Preview Lab → · Contrast checker → · Palette generator →