#21519A#21519A

#21519A is a dark, vivid blue. Relative luminance 0.085; OKLCH L 44.4% C 0.130 H 258.8°. Best body text is #FFFFFF at 7.75:1 contrast (WCAG AA passes).

Color values

HEX	#21519A
RGB	rgb(33, 81, 154)
HSL	hsl(216, 65%, 37%)
HSV	hsv(216, 79%, 60%)
CMYK	cmyk(78.6%, 47.4%, 0%, 39.6%)
CIE-LAB	lab(35.08, 11.04, -44.51)
CIE-LCH	lch(35.08, 45.85, 283.93°)
OKLab	oklab(44.38% -0.0252 -0.1277)
OKLCH	oklch(44.38% 0.13 258.8)
XYZ	xyz(9.4002, 8.5402, 31.7186)
Luminance	0.0854 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21519A #9A6A21

analogous

#218E9A #21519A #2D219A

triadic

#21519A #9A2151 #519A21

tetradic

#21519A #9A218E #9A6A21 #219A2D

square

#21519A #9A218E #9A6A21 #219A2D

split-complementary

#21519A #9A2D21 #8E9A21

monochromatic

#0B1C35 #163668 #21519A #2C6CCC #5A8DDC

Accessibility & contrast

On white

7.75

#21519A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#21519A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21519A

7.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21519A	#FFFFFF	#000000	##FFFFFF
##21519A	1.00	7.75	2.71	7.75
#FFFFFF	7.75	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A589D

Deuteranopia (green-blind)

#094D99

Tritanopia (blue-blind)

#00626E

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #21519a;
/* rgb */ color: rgb(33, 81, 154);
/* oklch */ color: oklch(44.4% 0.130 258.8);

Tailwind

colors: {
  custom: {
    50: '#6f81b8',
    500: '#21519a',
    950: '#000000',
  },
}

SCSS

$custom: #21519a;
$custom-light: #6f81b8;
$custom-dark: #000000;

JSON

{
  "hex": "#21519a",
  "rgb": {
    "r": 33,
    "g": 81,
    "b": 154
  },
  "hsl": {
    "h": 216.198,
    "s": 64.706,
    "l": 36.667
  },
  "oklch": {
    "l": 0.44376,
    "c": 0.1302,
    "h": 258.8
  },
  "luminance": 0.08541
}

Semantic roles & 50–950 ramp

primary

#21519A

secondary

#C09657

accent

#A540E8

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080A11

muted

#7B7C80

Preview Lab

Preview with #21519A

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

Preview Lab → · Contrast checker → · Palette generator →