#3539CB#3539CB

#3539CB is a mid, highly saturated blue. Relative luminance 0.080; OKLCH L 45.0% C 0.218 H 272.3°. Best body text is #FFFFFF at 8.08:1 contrast (WCAG AA passes).

Color values

HEX	#3539CB
RGB	rgb(53, 57, 203)
HSL	hsl(238, 59%, 50%)
HSV	hsv(238, 74%, 80%)
CMYK	cmyk(73.9%, 71.9%, 0%, 20.4%)
CIE-LAB	lab(33.97, 46.82, -75.33)
CIE-LCH	lch(33.97, 88.69, 301.86°)
OKLab	oklab(45.04% 0.0087 -0.218)
OKLCH	oklch(45.04% 0.218 272.3)
XYZ	xyz(13.7072, 7.9935, 57.3088)
Luminance	0.0799 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue Blue

#2242C7

ΔE00 3.29

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3539CB #CBC735

analogous

#3584CB #3539CB #7C35CB

triadic

#3539CB #CB3539 #39CB35

tetradic

#3539CB #CB3584 #CBC735 #35CB7C

square

#3539CB #CB3584 #CBC735 #35CB7C

split-complementary

#3539CB #CB7C35 #84CB35

monochromatic

#1B1D6A #282B9B #3539CB #6669D8 #9698E4

Accessibility & contrast

On white

8.08

#3539CB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#3539CB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3539CB

8.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3539CB	#FFFFFF	#000000	##FFFFFF
##3539CB	1.00	8.08	2.60	8.08
#FFFFFF	8.08	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057CF

Deuteranopia (green-blind)

#0049C8

Tritanopia (blue-blind)

#00627E

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3539cb;
/* rgb */ color: rgb(53, 57, 203);
/* oklch */ color: oklch(45.0% 0.218 272.3);

Tailwind

colors: {
  custom: {
    50: '#8371dc',
    500: '#3539cb',
    950: '#000000',
  },
}

SCSS

$custom: #3539cb;
$custom-light: #8371dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3539cb",
  "rgb": {
    "r": 53,
    "g": 57,
    "b": 203
  },
  "hsl": {
    "h": 238.4,
    "s": 59.055,
    "l": 50.196
  },
  "oklch": {
    "l": 0.45044,
    "c": 0.21815,
    "h": 272.3
  },
  "luminance": 0.07995
}

Semantic roles & 50–950 ramp

primary

#3539CB

secondary

#CFCE8C

accent

#DE46E2

background

#F8F6FD

surface

#F0ECFB

border

#CBC7D4

text

#0D0815

muted

#7D7B83

Preview Lab

Preview with #3539CB

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

Preview Lab → · Contrast checker → · Palette generator →