#21519E#21519E

#21519E is a dark, vivid blue. Relative luminance 0.087; OKLCH L 44.7% C 0.136 H 259.6°. Best body text is #FFFFFF at 7.68:1 contrast (WCAG AA passes).

Color values

HEX	#21519E
RGB	rgb(33, 81, 158)
HSL	hsl(217, 65%, 37%)
HSV	hsv(217, 79%, 62%)
CMYK	cmyk(79.1%, 48.7%, 0%, 38%)
CIE-LAB	lab(35.35, 12.62, -46.48)
CIE-LCH	lch(35.35, 48.17, 285.19°)
OKLab	oklab(44.67% -0.0245 -0.1336)
OKLCH	oklch(44.67% 0.136 259.6)
XYZ	xyz(9.7389, 8.6757, 33.5024)
Luminance	0.0868 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21519E #9E6E21

analogous

#21909E #21519E #30219E

triadic

#21519E #9E2151 #519E21

tetradic

#21519E #9E2190 #9E6E21 #219E30

square

#21519E #9E2190 #9E6E21 #219E30

split-complementary

#21519E #9E3021 #909E21

monochromatic

#0C1D39 #16376B #21519E #2C6BD1 #5C8EDD

Accessibility & contrast

On white

7.68

#21519E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.74

#21519E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21519E

7.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21519E	#FFFFFF	#000000	##FFFFFF
##21519E	1.00	7.68	2.74	7.68
#FFFFFF	7.68	1.00	21.00	1.00
#000000	2.74	21.00	1.00	21.00
##FFFFFF	7.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2559A1

Deuteranopia (green-blind)

#004E9C

Tritanopia (blue-blind)

#006370

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #21519e;
/* rgb */ color: rgb(33, 81, 158);
/* oklch */ color: oklch(44.7% 0.136 259.6);

Tailwind

colors: {
  custom: {
    50: '#7081bb',
    500: '#21519e',
    950: '#000000',
  },
}

SCSS

$custom: #21519e;
$custom-light: #7081bb;
$custom-dark: #000000;

JSON

{
  "hex": "#21519e",
  "rgb": {
    "r": 33,
    "g": 81,
    "b": 158
  },
  "hsl": {
    "h": 216.96,
    "s": 65.445,
    "l": 37.451
  },
  "oklch": {
    "l": 0.44669,
    "c": 0.13579,
    "h": 259.6
  },
  "luminance": 0.08677
}

Semantic roles & 50–950 ramp

primary

#21519E

secondary

#C19959

accent

#A83FE8

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #21519E

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

Preview Lab → · Contrast checker → · Palette generator →