#21509A#21509A

#21509A is a dark, vivid blue. Relative luminance 0.084; OKLCH L 44.1% C 0.131 H 259.3°. Best body text is #FFFFFF at 7.84:1 contrast (WCAG AA passes).

Color values

HEX	#21509A
RGB	rgb(33, 80, 154)
HSL	hsl(217, 65%, 37%)
HSV	hsv(217, 79%, 60%)
CMYK	cmyk(78.6%, 48.1%, 0%, 39.6%)
CIE-LAB	lab(34.79, 11.71, -44.98)
CIE-LCH	lch(34.79, 46.48, 284.59°)
OKLab	oklab(44.15% -0.0244 -0.1292)
OKLCH	oklch(44.15% 0.131 259.3)
XYZ	xyz(9.3265, 8.3927, 31.6940)
Luminance	0.0839 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21509A #9A6B21

analogous

#218D9A #21509A #2E219A

triadic

#21509A #9A2150 #509A21

tetradic

#21509A #9A218D #9A6B21 #219A2E

square

#21509A #9A218D #9A6B21 #219A2E

split-complementary

#21509A #9A2E21 #8D9A21

monochromatic

#0B1C35 #163668 #21509A #2C6ACC #5A8CDC

Accessibility & contrast

On white

7.84

#21509A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#21509A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21509A

7.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21509A	#FFFFFF	#000000	##FFFFFF
##21509A	1.00	7.84	2.68	7.84
#FFFFFF	7.84	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#27589D

Deuteranopia (green-blind)

#034D99

Tritanopia (blue-blind)

#00626D

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #21509a;
/* rgb */ color: rgb(33, 80, 154);
/* oklch */ color: oklch(44.1% 0.131 259.3);

Tailwind

colors: {
  custom: {
    50: '#6f80b8',
    500: '#21509a',
    950: '#000000',
  },
}

SCSS

$custom: #21509a;
$custom-light: #6f80b8;
$custom-dark: #000000;

JSON

{
  "hex": "#21509a",
  "rgb": {
    "r": 33,
    "g": 80,
    "b": 154
  },
  "hsl": {
    "h": 216.694,
    "s": 64.706,
    "l": 36.667
  },
  "oklch": {
    "l": 0.44149,
    "c": 0.13144,
    "h": 259.3
  },
  "luminance": 0.08394
}

Semantic roles & 50–950 ramp

primary

#21509A

secondary

#C09757

accent

#A740E8

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080A11

muted

#7B7C80

Preview Lab

Preview with #21509A

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

Preview Lab → · Contrast checker → · Palette generator →