#3031B4#3031B4

#3031B4 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 41.2% C 0.199 H 273.1°. Best body text is #FFFFFF at 9.44:1 contrast (WCAG AA passes).

Color values

HEX	#3031B4
RGB	rgb(48, 49, 180)
HSL	hsl(240, 58%, 45%)
HSV	hsv(240, 73%, 71%)
CMYK	cmyk(73.3%, 72.8%, 0%, 29.4%)
CIE-LAB	lab(29.71, 43.28, -68.82)
CIE-LCH	lch(29.71, 81.30, 302.17°)
OKLab	oklab(41.23% 0.0106 -0.1991)
OKLCH	oklch(41.23% 0.199 273.1)
XYZ	xyz(10.5527, 6.1192, 43.7962)
Luminance	0.0612 (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

#3031B4 #B4B330

analogous

#3073B4 #3031B4 #7130B4

triadic

#3031B4 #B43031 #31B430

tetradic

#3031B4 #B43073 #B4B330 #30B471

square

#3031B4 #B43073 #B4B330 #30B471

split-complementary

#3031B4 #B47130 #73B430

monochromatic

#161753 #232484 #3031B4 #5152D1 #8182DD

Accessibility & contrast

On white

9.44

#3031B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#3031B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3031B4

9.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3031B4	#FFFFFF	#000000	##FFFFFF
##3031B4	1.00	9.44	2.22	9.44
#FFFFFF	9.44	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CB8

Deuteranopia (green-blind)

#0040B2

Tritanopia (blue-blind)

#00566F

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #3031b4;
/* rgb */ color: rgb(48, 49, 180);
/* oklch */ color: oklch(41.2% 0.199 273.1);

Tailwind

colors: {
  custom: {
    50: '#7d6acc',
    500: '#3031b4',
    950: '#000000',
  },
}

SCSS

$custom: #3031b4;
$custom-light: #7d6acc;
$custom-dark: #000000;

JSON

{
  "hex": "#3031b4",
  "rgb": {
    "r": 48,
    "g": 49,
    "b": 180
  },
  "hsl": {
    "h": 239.545,
    "s": 57.895,
    "l": 44.706
  },
  "oklch": {
    "l": 0.41234,
    "c": 0.19939,
    "h": 273.1
  },
  "luminance": 0.0612
}

Semantic roles & 50–950 ramp

primary

#3031B4

secondary

#C6C679

accent

#E047E1

background

#F8F6FC

surface

#EFEBF9

border

#CAC6D2

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #3031B4

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

Preview Lab → · Contrast checker → · Palette generator →