#3531B8#3531B8

#3531B8 is a dark, highly saturated blue. Relative luminance 0.064; OKLCH L 42.0% C 0.203 H 274.5°. Best body text is #FFFFFF at 9.20:1 contrast (WCAG AA passes).

Color values

HEX	#3531B8
RGB	rgb(53, 49, 184)
HSL	hsl(242, 58%, 46%)
HSV	hsv(242, 73%, 72%)
CMYK	cmyk(71.2%, 73.4%, 0%, 27.8%)
CIE-LAB	lab(30.43, 45.11, -70.00)
CIE-LCH	lch(30.43, 83.27, 302.80°)
OKLab	oklab(41.95% 0.0159 -0.2024)
OKLCH	oklch(41.95% 0.203 274.5)
XYZ	xyz(11.2154, 6.4131, 45.9849)
Luminance	0.0641 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Sapphire (survey)

#2138AB

ΔE00 3.79

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3531B8 #B4B831

analogous

#3170B8 #3531B8 #7831B8

triadic

#3531B8 #B83531 #31B835

tetradic

#3531B8 #B83170 #B4B831 #31B878

square

#3531B8 #B83170 #B4B831 #31B878

split-complementary

#3531B8 #B87831 #70B831

monochromatic

#191757 #272488 #3531B8 #5855D2 #8885DE

Accessibility & contrast

On white

9.20

#3531B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#3531B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3531B8

9.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3531B8	#FFFFFF	#000000	##FFFFFF
##3531B8	1.00	9.20	2.28	9.20
#FFFFFF	9.20	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EBC

Deuteranopia (green-blind)

#0041B6

Tritanopia (blue-blind)

#005872

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3531b8;
/* rgb */ color: rgb(53, 49, 184);
/* oklch */ color: oklch(42.0% 0.203 274.5);

Tailwind

colors: {
  custom: {
    50: '#806bcf',
    500: '#3531b8',
    950: '#000000',
  },
}

SCSS

$custom: #3531b8;
$custom-light: #806bcf;
$custom-dark: #000000;

JSON

{
  "hex": "#3531b8",
  "rgb": {
    "r": 53,
    "g": 49,
    "b": 184
  },
  "hsl": {
    "h": 241.778,
    "s": 57.94,
    "l": 45.686
  },
  "oklch": {
    "l": 0.41951,
    "c": 0.20305,
    "h": 274.5
  },
  "luminance": 0.06414
}

Semantic roles & 50–950 ramp

primary

#3531B8

secondary

#C6C87D

accent

#E147DD

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3531B8

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

Preview Lab → · Contrast checker → · Palette generator →