#3031B3#3031B3

#3031B3 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 41.1% C 0.198 H 273.1°. Best body text is #FFFFFF at 9.48:1 contrast (WCAG AA passes).

Color values

HEX	#3031B3
RGB	rgb(48, 49, 179)
HSL	hsl(240, 58%, 45%)
HSV	hsv(240, 73%, 70%)
CMYK	cmyk(73.2%, 72.6%, 0%, 29.8%)
CIE-LAB	lab(29.61, 42.95, -68.39)
CIE-LCH	lch(29.61, 80.76, 302.13°)
OKLab	oklab(41.13% 0.0108 -0.1979)
OKLCH	oklch(41.13% 0.198 273.1)
XYZ	xyz(10.4512, 6.0786, 43.2616)
Luminance	0.0608 (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

#3031B3 #B3B230

analogous

#3073B3 #3031B3 #7130B3

triadic

#3031B3 #B33031 #31B330

tetradic

#3031B3 #B33073 #B3B230 #30B371

square

#3031B3 #B33073 #B3B230 #30B371

split-complementary

#3031B3 #B37130 #73B330

monochromatic

#161752 #232483 #3031B3 #5051D0 #8081DD

Accessibility & contrast

On white

9.48

#3031B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#3031B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3031B3

9.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3031B3	#FFFFFF	#000000	##FFFFFF
##3031B3	1.00	9.48	2.22	9.48
#FFFFFF	9.48	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CB7

Deuteranopia (green-blind)

#003FB1

Tritanopia (blue-blind)

#00566F

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #3031b3;
/* rgb */ color: rgb(48, 49, 179);
/* oklch */ color: oklch(41.1% 0.198 273.1);

Tailwind

colors: {
  custom: {
    50: '#7d6acb',
    500: '#3031b3',
    950: '#000000',
  },
}

SCSS

$custom: #3031b3;
$custom-light: #7d6acb;
$custom-dark: #000000;

JSON

{
  "hex": "#3031b3",
  "rgb": {
    "r": 48,
    "g": 49,
    "b": 179
  },
  "hsl": {
    "h": 239.542,
    "s": 57.709,
    "l": 44.51
  },
  "oklch": {
    "l": 0.41131,
    "c": 0.19815,
    "h": 273.1
  },
  "luminance": 0.0608
}

Semantic roles & 50–950 ramp

primary

#3031B3

secondary

#C6C579

accent

#E047E1

background

#F8F6FC

surface

#EFEBF9

border

#CAC6D2

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #3031B3

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

Preview Lab → · Contrast checker → · Palette generator →