#21519C#21519C

#21519C is a dark, vivid blue. Relative luminance 0.086; OKLCH L 44.5% C 0.133 H 259.2°. Best body text is #FFFFFF at 7.72:1 contrast (WCAG AA passes).

Color values

HEX	#21519C
RGB	rgb(33, 81, 156)
HSL	hsl(217, 65%, 37%)
HSV	hsv(217, 79%, 61%)
CMYK	cmyk(78.8%, 48.1%, 0%, 38.8%)
CIE-LAB	lab(35.22, 11.83, -45.50)
CIE-LCH	lch(35.22, 47.01, 284.58°)
OKLab	oklab(44.52% -0.0249 -0.1307)
OKLCH	oklch(44.52% 0.133 259.2)
XYZ	xyz(9.5682, 8.6074, 32.6032)
Luminance	0.0861 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21519C #9C6C21

analogous

#218F9C #21519C #2E219C

triadic

#21519C #9C2151 #519C21

tetradic

#21519C #9C218F #9C6C21 #219C2E

square

#21519C #9C218F #9C6C21 #219C2E

split-complementary

#21519C #9C2E21 #8F9C21

monochromatic

#0C1D37 #163769 #21519C #2C6BCF #5B8EDC

Accessibility & contrast

On white

7.72

#21519C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#21519C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21519C

7.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21519C	#FFFFFF	#000000	##FFFFFF
##21519C	1.00	7.72	2.72	7.72
#FFFFFF	7.72	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#28599F

Deuteranopia (green-blind)

#024E9B

Tritanopia (blue-blind)

#00636F

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #21519c;
/* rgb */ color: rgb(33, 81, 156);
/* oklch */ color: oklch(44.5% 0.133 259.2);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#21519c",
  "rgb": {
    "r": 33,
    "g": 81,
    "b": 156
  },
  "hsl": {
    "h": 216.585,
    "s": 65.079,
    "l": 37.059
  },
  "oklch": {
    "l": 0.44522,
    "c": 0.13301,
    "h": 259.2
  },
  "luminance": 0.08608
}

Semantic roles & 50–950 ramp

primary

#21519C

secondary

#C19858

accent

#A640E8

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A11

muted

#7B7C80

Preview Lab

Preview with #21519C

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

Preview Lab → · Contrast checker → · Palette generator →