#21519D#21519D

#21519D is a dark, vivid blue. Relative luminance 0.086; OKLCH L 44.6% C 0.134 H 259.4°. Best body text is #FFFFFF at 7.70:1 contrast (WCAG AA passes).

Color values

HEX	#21519D
RGB	rgb(33, 81, 157)
HSL	hsl(217, 65%, 37%)
HSV	hsv(217, 79%, 62%)
CMYK	cmyk(79%, 48.4%, 0%, 38.4%)
CIE-LAB	lab(35.28, 12.23, -45.99)
CIE-LCH	lch(35.28, 47.59, 284.89°)
OKLab	oklab(44.6% -0.0247 -0.1321)
OKLCH	oklch(44.6% 0.134 259.4)
XYZ	xyz(9.6532, 8.6414, 33.0509)
Luminance	0.0864 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21519D #9D6D21

analogous

#218F9D #21519D #2F219D

triadic

#21519D #9D2151 #519D21

tetradic

#21519D #9D218F #9D6D21 #219D2F

square

#21519D #9D218F #9D6D21 #219D2F

split-complementary

#21519D #9D2F21 #8F9D21

monochromatic

#0C1D38 #16376A #21519D #2C6BD0 #5C8EDD

Accessibility & contrast

On white

7.70

#21519D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.73

#21519D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21519D

7.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21519D	#FFFFFF	#000000	##FFFFFF
##21519D	1.00	7.70	2.73	7.70
#FFFFFF	7.70	1.00	21.00	1.00
#000000	2.73	21.00	1.00	21.00
##FFFFFF	7.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2759A0

Deuteranopia (green-blind)

#004E9B

Tritanopia (blue-blind)

#00636F

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #21519d;
/* rgb */ color: rgb(33, 81, 157);
/* oklch */ color: oklch(44.6% 0.134 259.4);

Tailwind

colors: {
  custom: {
    50: '#7081ba',
    500: '#21519d',
    950: '#000000',
  },
}

SCSS

$custom: #21519d;
$custom-light: #7081ba;
$custom-dark: #000000;

JSON

{
  "hex": "#21519d",
  "rgb": {
    "r": 33,
    "g": 81,
    "b": 157
  },
  "hsl": {
    "h": 216.774,
    "s": 65.263,
    "l": 37.255
  },
  "oklch": {
    "l": 0.44596,
    "c": 0.1344,
    "h": 259.4
  },
  "luminance": 0.08643
}

Semantic roles & 50–950 ramp

primary

#21519D

secondary

#C19959

accent

#A740E8

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #21519D

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

Preview Lab → · Contrast checker → · Palette generator →