#3031BB#3031BB

#3031BB is a dark, highly saturated blue. Relative luminance 0.064; OKLCH L 42.0% C 0.208 H 272.6°. Best body text is #FFFFFF at 9.20:1 contrast (WCAG AA passes).

Color values

HEX	#3031BB
RGB	rgb(48, 49, 187)
HSL	hsl(240, 59%, 46%)
HSV	hsv(240, 74%, 73%)
CMYK	cmyk(74.3%, 73.8%, 0%, 26.7%)
CIE-LAB	lab(30.43, 45.62, -71.79)
CIE-LCH	lch(30.43, 85.06, 302.43°)
OKLab	oklab(41.96% 0.0095 -0.2078)
OKLCH	oklch(41.96% 0.208 272.6)
XYZ	xyz(11.2839, 6.4117, 47.6470)
Luminance	0.0641 (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

#3031BB #BBBA30

analogous

#3076BB #3031BB #7430BB

triadic

#3031BB #BB3031 #31BB30

tetradic

#3031BB #BB3076 #BBBA30 #30BB74

square

#3031BB #BB3076 #BBBA30 #30BB74

split-complementary

#3031BB #BB7430 #76BB30

monochromatic

#17175A #23248A #3031BB #5556D3 #8686E0

Accessibility & contrast

On white

9.20

#3031BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#3031BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3031BB

9.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3031BB	#FFFFFF	#000000	##FFFFFF
##3031BB	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)

#004EBF

Deuteranopia (green-blind)

#0041B9

Tritanopia (blue-blind)

#005973

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3031bb;
/* rgb */ color: rgb(48, 49, 187);
/* oklch */ color: oklch(42.0% 0.208 272.6);

Tailwind

colors: {
  custom: {
    50: '#7f6bd1',
    500: '#3031bb',
    950: '#000000',
  },
}

SCSS

$custom: #3031bb;
$custom-light: #7f6bd1;
$custom-dark: #000000;

JSON

{
  "hex": "#3031bb",
  "rgb": {
    "r": 48,
    "g": 49,
    "b": 187
  },
  "hsl": {
    "h": 239.568,
    "s": 59.149,
    "l": 46.078
  },
  "oklch": {
    "l": 0.41958,
    "c": 0.20797,
    "h": 272.6
  },
  "luminance": 0.06413
}

Semantic roles & 50–950 ramp

primary

#3031BB

secondary

#C9C97D

accent

#E145E2

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3031BB

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

Preview Lab → · Contrast checker → · Palette generator →