#21529B#21529B

#21529B is a dark, vivid blue. Relative luminance 0.087; OKLCH L 44.7% C 0.130 H 258.6°. Best body text is #FFFFFF at 7.65:1 contrast (WCAG AA passes).

Color values

HEX	#21529B
RGB	rgb(33, 82, 155)
HSL	hsl(216, 65%, 37%)
HSV	hsv(216, 79%, 61%)
CMYK	cmyk(78.7%, 47.1%, 0%, 39.2%)
CIE-LAB	lab(35.45, 10.77, -44.53)
CIE-LCH	lch(35.45, 45.81, 283.59°)
OKLab	oklab(44.68% -0.0259 -0.1278)
OKLCH	oklch(44.68% 0.13 258.6)
XYZ	xyz(9.5587, 8.7234, 32.1840)
Luminance	0.0872 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21529B #9B6A21

analogous

#218F9B #21529B #2D219B

triadic

#21529B #9B2152 #529B21

tetradic

#21529B #9B218F #9B6A21 #219B2D

square

#21529B #9B218F #9B6A21 #219B2D

split-complementary

#21529B #9B2D21 #8F9B21

monochromatic

#0C1D36 #163769 #21529B #2C6DCD #5A8EDC

Accessibility & contrast

On white

7.65

#21529B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.74

#21529B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21529B

7.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21529B	#FFFFFF	#000000	##FFFFFF
##21529B	1.00	7.65	2.74	7.65
#FFFFFF	7.65	1.00	21.00	1.00
#000000	2.74	21.00	1.00	21.00
##FFFFFF	7.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B599E

Deuteranopia (green-blind)

#0B4E9A

Tritanopia (blue-blind)

#00636F

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #21529b;
/* rgb */ color: rgb(33, 82, 155);
/* oklch */ color: oklch(44.7% 0.130 258.6);

Tailwind

colors: {
  custom: {
    50: '#6f82b9',
    500: '#21529b',
    950: '#000000',
  },
}

SCSS

$custom: #21529b;
$custom-light: #6f82b9;
$custom-dark: #000000;

JSON

{
  "hex": "#21529b",
  "rgb": {
    "r": 33,
    "g": 82,
    "b": 155
  },
  "hsl": {
    "h": 215.902,
    "s": 64.894,
    "l": 36.863
  },
  "oklch": {
    "l": 0.44677,
    "c": 0.13037,
    "h": 258.6
  },
  "luminance": 0.08724
}

Semantic roles & 50–950 ramp

primary

#21529B

secondary

#C09658

accent

#A440E8

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080A11

muted

#7B7C80

Preview Lab

Preview with #21529B

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

Preview Lab → · Contrast checker → · Palette generator →