#3539B3#3539B3

#3539B3 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.7% C 0.188 H 273.6°. Best body text is #FFFFFF at 8.80:1 contrast (WCAG AA passes).

Color values

HEX	#3539B3
RGB	rgb(53, 57, 179)
HSL	hsl(238, 54%, 45%)
HSV	hsv(238, 70%, 70%)
CMYK	cmyk(70.4%, 68.2%, 0%, 29.8%)
CIE-LAB	lab(31.66, 38.70, -65.01)
CIE-LCH	lch(31.66, 75.65, 300.77°)
OKLab	oklab(42.69% 0.0119 -0.1879)
OKLCH	oklch(42.69% 0.188 273.6)
XYZ	xyz(11.0653, 6.9367, 43.3949)
Luminance	0.0694 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3539B3 #B3AF35

analogous

#3578B3 #3539B3 #7035B3

triadic

#3539B3 #B33539 #39B335

tetradic

#3539B3 #B33578 #B3AF35 #35B370

square

#3539B3 #B33578 #B3AF35 #35B370

split-complementary

#3539B3 #B37035 #78B335

monochromatic

#191B55 #272A84 #3539B3 #585BCD #878ADB

Accessibility & contrast

On white

8.80

#3539B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#3539B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3539B3

8.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3539B3	#FFFFFF	#000000	##FFFFFF
##3539B3	1.00	8.80	2.39	8.80
#FFFFFF	8.80	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B7

Deuteranopia (green-blind)

#0045B1

Tritanopia (blue-blind)

#005A71

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3539b3;
/* rgb */ color: rgb(53, 57, 179);
/* oklch */ color: oklch(42.7% 0.188 273.6);

Tailwind

colors: {
  custom: {
    50: '#7e70cb',
    500: '#3539b3',
    950: '#000000',
  },
}

SCSS

$custom: #3539b3;
$custom-light: #7e70cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3539b3",
  "rgb": {
    "r": 53,
    "g": 57,
    "b": 179
  },
  "hsl": {
    "h": 238.095,
    "s": 54.31,
    "l": 45.49
  },
  "oklch": {
    "l": 0.42688,
    "c": 0.18824,
    "h": 273.6
  },
  "luminance": 0.06938
}

Semantic roles & 50–950 ramp

primary

#3539B3

secondary

#C5C37F

accent

#D94ADE

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3539B3

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

Preview Lab → · Contrast checker → · Palette generator →