#3521BB#3521BB

#3521BB is a dark, highly saturated blue. Relative luminance 0.054; OKLCH L 40.3% C 0.221 H 275.8°. Best body text is #FFFFFF at 10.07:1 contrast (WCAG AA passes).

Color values

HEX	#3521BB
RGB	rgb(53, 33, 187)
HSL	hsl(248, 70%, 43%)
HSV	hsv(248, 82%, 73%)
CMYK	cmyk(71.7%, 82.4%, 0%, 26.7%)
CIE-LAB	lab(27.93, 54.15, -75.92)
CIE-LCH	lch(27.93, 93.25, 305.50°)
OKLab	oklab(40.29% 0.0223 -0.2194)
OKLCH	oklch(40.29% 0.221 275.8)
XYZ	xyz(10.9788, 5.4314, 47.4739)
Luminance	0.0543 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3521BB #A7BB21

analogous

#215ABB #3521BB #8221BB

triadic

#3521BB #BB3521 #21BB35

tetradic

#3521BB #BB215A #A7BB21 #21BB82

square

#3521BB #BB215A #A7BB21 #21BB82

split-complementary

#3521BB #BB8221 #5ABB21

monochromatic

#180F53 #261887 #3521BB #513DDD #8071E6

Accessibility & contrast

On white

10.07

#3521BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#3521BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3521BB

10.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3521BB	#FFFFFF	#000000	##FFFFFF
##3521BB	1.00	10.07	2.09	10.07
#FFFFFF	10.07	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048BF

Deuteranopia (green-blind)

#003BB8

Tritanopia (blue-blind)

#005270

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #3521bb;
/* rgb */ color: rgb(53, 33, 187);
/* oklch */ color: oklch(40.3% 0.221 275.8);

Tailwind

colors: {
  custom: {
    50: '#8262d1',
    500: '#3521bb',
    950: '#000000',
  },
}

SCSS

$custom: #3521bb;
$custom-light: #8262d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3521bb",
  "rgb": {
    "r": 53,
    "g": 33,
    "b": 187
  },
  "hsl": {
    "h": 247.792,
    "s": 70,
    "l": 43.137
  },
  "oklch": {
    "l": 0.40294,
    "c": 0.22056,
    "h": 275.8
  },
  "luminance": 0.05432
}

Semantic roles & 50–950 ramp

primary

#3521BB

secondary

#C0CC6B

accent

#ED3BD6

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0C0514

muted

#7D7A83

Preview Lab

Preview with #3521BB

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

Preview Lab → · Contrast checker → · Palette generator →