#21319B#21319B

#21319B is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.9% C 0.171 H 269.2°. Best body text is #FFFFFF at 10.62:1 contrast (WCAG AA passes).

Color values

HEX	#21319B
RGB	rgb(33, 49, 155)
HSL	hsl(232, 65%, 37%)
HSV	hsv(232, 79%, 61%)
CMYK	cmyk(78.7%, 68.4%, 0%, 39.2%)
CIE-LAB	lab(26.41, 33.00, -59.22)
CIE-LCH	lch(26.41, 67.80, 299.13°)
OKLab	oklab(37.88% -0.0024 -0.1714)
OKLCH	oklch(37.88% 0.171 269.2)
XYZ	xyz(7.6399, 4.8857, 31.5444)
Luminance	0.0489 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21319B #9B8B21

analogous

#216E9B #21319B #4E219B

triadic

#21319B #9B2131 #319B21

tetradic

#21319B #9B216E #9B8B21 #219B4E

square

#21319B #9B216E #9B8B21 #219B4E

split-complementary

#21319B #9B4E21 #6E9B21

monochromatic

#0C1136 #162169 #21319B #2C41CD #5A6BDC

Accessibility & contrast

On white

10.62

#21319B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#21319B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21319B

10.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21319B	#FFFFFF	#000000	##FFFFFF
##21319B	1.00	10.62	1.98	10.62
#FFFFFF	10.62	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00449E

Deuteranopia (green-blind)

#003999

Tritanopia (blue-blind)

#004E62

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #21319b;
/* rgb */ color: rgb(33, 49, 155);
/* oklch */ color: oklch(37.9% 0.171 269.2);

Tailwind

colors: {
  custom: {
    50: '#7269ba',
    500: '#21319b',
    950: '#000000',
  },
}

SCSS

$custom: #21319b;
$custom-light: #7269ba;
$custom-dark: #000000;

JSON

{
  "hex": "#21319b",
  "rgb": {
    "r": 33,
    "g": 49,
    "b": 155
  },
  "hsl": {
    "h": 232.131,
    "s": 64.894,
    "l": 36.863
  },
  "oklch": {
    "l": 0.37882,
    "c": 0.17146,
    "h": 269.2
  },
  "luminance": 0.04887
}

Semantic roles & 50–950 ramp

primary

#21319B

secondary

#C0B258

accent

#D240E8

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #21319B

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

Preview Lab → · Contrast checker → · Palette generator →