#3531B9#3531B9

#3531B9 is a dark, highly saturated blue. Relative luminance 0.065; OKLCH L 42.1% C 0.204 H 274.4°. Best body text is #FFFFFF at 9.17:1 contrast (WCAG AA passes).

Color values

HEX	#3531B9
RGB	rgb(53, 49, 185)
HSL	hsl(242, 58%, 46%)
HSV	hsv(242, 74%, 73%)
CMYK	cmyk(71.4%, 73.5%, 0%, 27.5%)
CIE-LAB	lab(30.53, 45.43, -70.43)
CIE-LCH	lch(30.53, 83.81, 302.83°)
OKLab	oklab(42.05% 0.0158 -0.2037)
OKLCH	oklch(42.05% 0.204 274.4)
XYZ	xyz(11.3206, 6.4552, 46.5389)
Luminance	0.0646 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Sapphire (survey)

#2138AB

ΔE00 3.87

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3531B9 #B5B931

analogous

#3171B9 #3531B9 #7931B9

triadic

#3531B9 #B93531 #31B935

tetradic

#3531B9 #B93171 #B5B931 #31B979

square

#3531B9 #B93171 #B5B931 #31B979

split-complementary

#3531B9 #B97931 #71B931

monochromatic

#191758 #272489 #3531B9 #5955D2 #8886DF

Accessibility & contrast

On white

9.17

#3531B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#3531B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3531B9

9.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3531B9	#FFFFFF	#000000	##FFFFFF
##3531B9	1.00	9.17	2.29	9.17
#FFFFFF	9.17	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EBD

Deuteranopia (green-blind)

#0041B7

Tritanopia (blue-blind)

#005872

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3531b9;
/* rgb */ color: rgb(53, 49, 185);
/* oklch */ color: oklch(42.1% 0.204 274.4);

Tailwind

colors: {
  custom: {
    50: '#806bcf',
    500: '#3531b9',
    950: '#000000',
  },
}

SCSS

$custom: #3531b9;
$custom-light: #806bcf;
$custom-dark: #000000;

JSON

{
  "hex": "#3531b9",
  "rgb": {
    "r": 53,
    "g": 49,
    "b": 185
  },
  "hsl": {
    "h": 241.765,
    "s": 58.12,
    "l": 45.882
  },
  "oklch": {
    "l": 0.42054,
    "c": 0.20427,
    "h": 274.4
  },
  "luminance": 0.06456
}

Semantic roles & 50–950 ramp

primary

#3531B9

secondary

#C6C87D

accent

#E146DD

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3531B9

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

Preview Lab → · Contrast checker → · Palette generator →