#21509C#21509C

#21509C is a dark, vivid blue. Relative luminance 0.085; OKLCH L 44.3% C 0.134 H 259.7°. Best body text is #FFFFFF at 7.80:1 contrast (WCAG AA passes).

Color values

HEX	#21509C
RGB	rgb(33, 80, 156)
HSL	hsl(217, 65%, 37%)
HSV	hsv(217, 79%, 61%)
CMYK	cmyk(78.8%, 48.7%, 0%, 38.8%)
CIE-LAB	lab(34.92, 12.50, -45.97)
CIE-LCH	lch(34.92, 47.64, 285.21°)
OKLab	oklab(44.3% -0.024 -0.1321)
OKLCH	oklch(44.3% 0.134 259.7)
XYZ	xyz(9.4944, 8.4599, 32.5786)
Luminance	0.0846 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21509C #9C6D21

analogous

#218E9C #21509C #30219C

triadic

#21509C #9C2150 #509C21

tetradic

#21509C #9C218E #9C6D21 #219C30

square

#21509C #9C218E #9C6D21 #219C30

split-complementary

#21509C #9C3021 #8E9C21

monochromatic

#0C1C37 #163669 #21509C #2C6ACF #5B8CDC

Accessibility & contrast

On white

7.80

#21509C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#21509C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21509C

7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21509C	#FFFFFF	#000000	##FFFFFF
##21509C	1.00	7.80	2.69	7.80
#FFFFFF	7.80	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#25589F

Deuteranopia (green-blind)

#004D9A

Tritanopia (blue-blind)

#00626E

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #21509c;
/* rgb */ color: rgb(33, 80, 156);
/* oklch */ color: oklch(44.3% 0.134 259.7);

Tailwind

colors: {
  custom: {
    50: '#7080ba',
    500: '#21509c',
    950: '#000000',
  },
}

SCSS

$custom: #21509c;
$custom-light: #7080ba;
$custom-dark: #000000;

JSON

{
  "hex": "#21509c",
  "rgb": {
    "r": 33,
    "g": 80,
    "b": 156
  },
  "hsl": {
    "h": 217.073,
    "s": 65.079,
    "l": 37.059
  },
  "oklch": {
    "l": 0.44296,
    "c": 0.13424,
    "h": 259.7
  },
  "luminance": 0.08461
}

Semantic roles & 50–950 ramp

primary

#21509C

secondary

#C19958

accent

#A840E8

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #21509C

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

Preview Lab → · Contrast checker → · Palette generator →