#21339B#21339B

#21339B is a dark, vivid blue. Relative luminance 0.051; OKLCH L 38.2% C 0.169 H 268.8°. Best body text is #FFFFFF at 10.44:1 contrast (WCAG AA passes).

Color values

HEX	#21339B
RGB	rgb(33, 51, 155)
HSL	hsl(231, 65%, 37%)
HSV	hsv(231, 79%, 61%)
CMYK	cmyk(78.7%, 67.1%, 0%, 39.2%)
CIE-LAB	lab(26.90, 31.69, -58.42)
CIE-LCH	lch(26.90, 66.46, 298.48°)
OKLab	oklab(38.24% -0.0035 -0.1691)
OKLCH	oklch(38.24% 0.169 268.8)
XYZ	xyz(7.7254, 5.0567, 31.5729)
Luminance	0.0506 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21339B #9B8921

analogous

#21709B #21339B #4C219B

triadic

#21339B #9B2133 #339B21

tetradic

#21339B #9B2170 #9B8921 #219B4C

square

#21339B #9B2170 #9B8921 #219B4C

split-complementary

#21339B #9B4C21 #709B21

monochromatic

#0C1236 #162269 #21339B #2C44CD #5A6EDC

Accessibility & contrast

On white

10.44

#21339B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#21339B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21339B

10.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21339B	#FFFFFF	#000000	##FFFFFF
##21339B	1.00	10.44	2.01	10.44
#FFFFFF	10.44	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00459E

Deuteranopia (green-blind)

#003A99

Tritanopia (blue-blind)

#004F62

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #21339b;
/* rgb */ color: rgb(33, 51, 155);
/* oklch */ color: oklch(38.2% 0.169 268.8);

Tailwind

colors: {
  custom: {
    50: '#716ab9',
    500: '#21339b',
    950: '#000000',
  },
}

SCSS

$custom: #21339b;
$custom-light: #716ab9;
$custom-dark: #000000;

JSON

{
  "hex": "#21339b",
  "rgb": {
    "r": 33,
    "g": 51,
    "b": 155
  },
  "hsl": {
    "h": 231.148,
    "s": 64.894,
    "l": 36.863
  },
  "oklch": {
    "l": 0.38239,
    "c": 0.16912,
    "h": 268.8
  },
  "luminance": 0.05058
}

Semantic roles & 50–950 ramp

primary

#21339B

secondary

#C0B158

accent

#CF40E8

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #21339B

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

Preview Lab → · Contrast checker → · Palette generator →