#3531BC#3531BC

#3531BC is a dark, highly saturated blue. Relative luminance 0.066; OKLCH L 42.4% C 0.208 H 274.2°. Best body text is #FFFFFF at 9.06:1 contrast (WCAG AA passes).

Color values

HEX	#3531BC
RGB	rgb(53, 49, 188)
HSL	hsl(242, 59%, 46%)
HSV	hsv(242, 74%, 74%)
CMYK	cmyk(71.8%, 73.9%, 0%, 26.3%)
CIE-LAB	lab(30.84, 46.41, -71.70)
CIE-LCH	lch(30.84, 85.41, 302.92°)
OKLab	oklab(42.36% 0.0152 -0.2074)
OKLCH	oklch(42.36% 0.208 274.2)
XYZ	xyz(11.6406, 6.5832, 48.2244)
Luminance	0.0658 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Sapphire (survey)

#2138AB

ΔE00 4.10

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3531BC #B8BC31

analogous

#3173BC #3531BC #7B31BC

triadic

#3531BC #BC3531 #31BC35

tetradic

#3531BC #BC3173 #B8BC31 #31BC7B

square

#3531BC #BC3173 #B8BC31 #31BC7B

split-complementary

#3531BC #BC7B31 #73BC31

monochromatic

#1A185B #27248B #3531BC #5B57D3 #8A88E0

Accessibility & contrast

On white

9.06

#3531BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#3531BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3531BC

9.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3531BC	#FFFFFF	#000000	##FFFFFF
##3531BC	1.00	9.06	2.32	9.06
#FFFFFF	9.06	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FC0

Deuteranopia (green-blind)

#0042BA

Tritanopia (blue-blind)

#005974

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #3531bc;
/* rgb */ color: rgb(53, 49, 188);
/* oklch */ color: oklch(42.4% 0.208 274.2);

Tailwind

colors: {
  custom: {
    50: '#816bd1',
    500: '#3531bc',
    950: '#000000',
  },
}

SCSS

$custom: #3531bc;
$custom-light: #816bd1;
$custom-dark: #000000;

JSON

{
  "hex": "#3531bc",
  "rgb": {
    "r": 53,
    "g": 49,
    "b": 188
  },
  "hsl": {
    "h": 241.727,
    "s": 58.65,
    "l": 46.471
  },
  "oklch": {
    "l": 0.42362,
    "c": 0.20792,
    "h": 274.2
  },
  "luminance": 0.06584
}

Semantic roles & 50–950 ramp

primary

#3531BC

secondary

#C7CA7F

accent

#E246DD

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3531BC

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

Preview Lab → · Contrast checker → · Palette generator →