#21539F#21539F

#21539F is a mid, vivid blue. Relative luminance 0.090; OKLCH L 45.2% C 0.135 H 258.9°. Best body text is #FFFFFF at 7.49:1 contrast (WCAG AA passes).

Color values

HEX	#21539F
RGB	rgb(33, 83, 159)
HSL	hsl(216, 66%, 38%)
HSV	hsv(216, 79%, 62%)
CMYK	cmyk(79.2%, 47.8%, 0%, 37.6%)
CIE-LAB	lab(36.01, 11.69, -46.03)
CIE-LCH	lch(36.01, 47.49, 284.25°)
OKLab	oklab(45.2% -0.026 -0.1322)
OKLCH	oklch(45.2% 0.135 258.9)
XYZ	xyz(9.9762, 9.0119, 34.0078)
Luminance	0.0901 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21539F #9F6D21

analogous

#21929F #21539F #2E219F

triadic

#21539F #9F2153 #539F21

tetradic

#21539F #9F2192 #9F6D21 #219F2E

square

#21539F #9F2192 #9F6D21 #219F2E

split-complementary

#21539F #9F2E21 #929F21

monochromatic

#0C1E3A #16396C #21539F #2C6DD2 #5D90DD

Accessibility & contrast

On white

7.49

#21539F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.80

#21539F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21539F

7.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21539F	#FFFFFF	#000000	##FFFFFF
##21539F	1.00	7.49	2.80	7.49
#FFFFFF	7.49	1.00	21.00	1.00
#000000	2.80	21.00	1.00	21.00
##FFFFFF	7.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#295BA2

Deuteranopia (green-blind)

#034F9D

Tritanopia (blue-blind)

#006571

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #21539f;
/* rgb */ color: rgb(33, 83, 159);
/* oklch */ color: oklch(45.2% 0.135 258.9);

Tailwind

colors: {
  custom: {
    50: '#7082bc',
    500: '#21539f',
    950: '#000000',
  },
}

SCSS

$custom: #21539f;
$custom-light: #7082bc;
$custom-dark: #000000;

JSON

{
  "hex": "#21539f",
  "rgb": {
    "r": 33,
    "g": 83,
    "b": 159
  },
  "hsl": {
    "h": 216.19,
    "s": 65.625,
    "l": 37.647
  },
  "oklch": {
    "l": 0.45195,
    "c": 0.13472,
    "h": 258.9
  },
  "luminance": 0.09013
}

Semantic roles & 50–950 ramp

primary

#21539F

secondary

#C2995A

accent

#A53FE9

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #21539F

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

Preview Lab → · Contrast checker → · Palette generator →