#3331BB#3331BB

#3331BB is a dark, highly saturated blue. Relative luminance 0.065; OKLCH L 42.1% C 0.207 H 273.6°. Best body text is #FFFFFF at 9.14:1 contrast (WCAG AA passes).

Color values

HEX	#3331BB
RGB	rgb(51, 49, 187)
HSL	hsl(241, 58%, 46%)
HSV	hsv(241, 74%, 73%)
CMYK	cmyk(72.7%, 73.8%, 0%, 26.7%)
CIE-LAB	lab(30.61, 45.89, -71.49)
CIE-LCH	lch(30.61, 84.95, 302.70°)
OKLab	oklab(42.14% 0.013 -0.2068)
OKLCH	oklch(42.14% 0.207 273.6)
XYZ	xyz(11.4302, 6.4871, 47.6538)
Luminance	0.0649 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Sapphire (survey)

#2138AB

ΔE00 3.88

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3331BB #B9BB31

analogous

#3174BB #3331BB #7831BB

triadic

#3331BB #BB3331 #31BB33

tetradic

#3331BB #BB3174 #B9BB31 #31BB78

square

#3331BB #BB3174 #B9BB31 #31BB78

split-complementary

#3331BB #BB7831 #74BB31

monochromatic

#19185A #26248B #3331BB #5856D3 #8887E0

Accessibility & contrast

On white

9.14

#3331BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#3331BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3331BB

9.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3331BB	#FFFFFF	#000000	##FFFFFF
##3331BB	1.00	9.14	2.30	9.14
#FFFFFF	9.14	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FBF

Deuteranopia (green-blind)

#0041B9

Tritanopia (blue-blind)

#005973

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3331bb;
/* rgb */ color: rgb(51, 49, 187);
/* oklch */ color: oklch(42.1% 0.207 273.6);

Tailwind

colors: {
  custom: {
    50: '#806bd1',
    500: '#3331bb',
    950: '#000000',
  },
}

SCSS

$custom: #3331bb;
$custom-light: #806bd1;
$custom-dark: #000000;

JSON

{
  "hex": "#3331bb",
  "rgb": {
    "r": 51,
    "g": 49,
    "b": 187
  },
  "hsl": {
    "h": 240.87,
    "s": 58.475,
    "l": 46.275
  },
  "oklch": {
    "l": 0.42136,
    "c": 0.20721,
    "h": 273.6
  },
  "luminance": 0.06488
}

Semantic roles & 50–950 ramp

primary

#3331BB

secondary

#C8C97F

accent

#E246DF

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3331BB

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

Preview Lab → · Contrast checker → · Palette generator →