#3537CB#3537CB

#3537CB is a dark, highly saturated blue. Relative luminance 0.078; OKLCH L 44.8% C 0.220 H 272.5°. Best body text is #FFFFFF at 8.20:1 contrast (WCAG AA passes).

Color values

HEX	#3537CB
RGB	rgb(53, 55, 203)
HSL	hsl(239, 59%, 50%)
HSV	hsv(239, 74%, 80%)
CMYK	cmyk(73.9%, 72.9%, 0%, 20.4%)
CIE-LAB	lab(33.56, 47.96, -76.00)
CIE-LCH	lch(33.56, 89.86, 302.25°)
OKLab	oklab(44.75% 0.0097 -0.2199)
OKLCH	oklch(44.75% 0.22 272.5)
XYZ	xyz(13.6103, 7.7996, 57.2765)
Luminance	0.0780 (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

#3537CB #CBC935

analogous

#3582CB #3537CB #7E35CB

triadic

#3537CB #CB3537 #37CB35

tetradic

#3537CB #CB3582 #CBC935 #35CB7E

square

#3537CB #CB3582 #CBC935 #35CB7E

split-complementary

#3537CB #CB7E35 #82CB35

monochromatic

#1B1C6A #28299B #3537CB #6667D8 #9697E4

Accessibility & contrast

On white

8.20

#3537CB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#3537CB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3537CB

8.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3537CB	#FFFFFF	#000000	##FFFFFF
##3537CB	1.00	8.20	2.56	8.20
#FFFFFF	8.20	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056CF

Deuteranopia (green-blind)

#0048C8

Tritanopia (blue-blind)

#00627E

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3537cb;
/* rgb */ color: rgb(53, 55, 203);
/* oklch */ color: oklch(44.8% 0.220 272.5);

Tailwind

colors: {
  custom: {
    50: '#836fdc',
    500: '#3537cb',
    950: '#000000',
  },
}

SCSS

$custom: #3537cb;
$custom-light: #836fdc;
$custom-dark: #000000;

JSON

{
  "hex": "#3537cb",
  "rgb": {
    "r": 53,
    "g": 55,
    "b": 203
  },
  "hsl": {
    "h": 239.2,
    "s": 59.055,
    "l": 50.196
  },
  "oklch": {
    "l": 0.44753,
    "c": 0.22014,
    "h": 272.5
  },
  "luminance": 0.07801
}

Semantic roles & 50–950 ramp

primary

#3537CB

secondary

#CFCF8C

accent

#E046E2

background

#F8F6FD

surface

#F0ECFB

border

#CBC7D4

text

#0D0715

muted

#7D7A83

Preview Lab

Preview with #3537CB

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

Preview Lab → · Contrast checker → · Palette generator →