#21509D#21509D

#21509D is a dark, vivid blue. Relative luminance 0.085; OKLCH L 44.4% C 0.136 H 259.9°. Best body text is #FFFFFF at 7.78:1 contrast (WCAG AA passes).

Color values

HEX	#21509D
RGB	rgb(33, 80, 157)
HSL	hsl(217, 65%, 37%)
HSV	hsv(217, 79%, 62%)
CMYK	cmyk(79%, 49%, 0%, 38.4%)
CIE-LAB	lab(34.99, 12.90, -46.46)
CIE-LCH	lch(34.99, 48.22, 285.51°)
OKLab	oklab(44.37% -0.0239 -0.1335)
OKLCH	oklch(44.37% 0.136 259.9)
XYZ	xyz(9.5794, 8.4939, 33.0264)
Luminance	0.0849 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21509D #9D6E21

analogous

#218E9D #21509D #30219D

triadic

#21509D #9D2150 #509D21

tetradic

#21509D #9D218E #9D6E21 #219D30

square

#21509D #9D218E #9D6E21 #219D30

split-complementary

#21509D #9D3021 #8E9D21

monochromatic

#0C1C38 #16366A #21509D #2C6AD0 #5C8DDD

Accessibility & contrast

On white

7.78

#21509D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#21509D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21509D

7.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21509D	#FFFFFF	#000000	##FFFFFF
##21509D	1.00	7.78	2.70	7.78
#FFFFFF	7.78	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2458A0

Deuteranopia (green-blind)

#004D9B

Tritanopia (blue-blind)

#00626F

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #21509d;
/* rgb */ color: rgb(33, 80, 157);
/* oklch */ color: oklch(44.4% 0.136 259.9);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#21509d",
  "rgb": {
    "r": 33,
    "g": 80,
    "b": 157
  },
  "hsl": {
    "h": 217.258,
    "s": 65.263,
    "l": 37.255
  },
  "oklch": {
    "l": 0.4437,
    "c": 0.13564,
    "h": 259.9
  },
  "luminance": 0.08495
}

Semantic roles & 50–950 ramp

primary

#21509D

secondary

#C19A59

accent

#A840E8

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #21509D

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

Preview Lab → · Contrast checker → · Palette generator →