#3031B2#3031B2

#3031B2 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 41.0% C 0.197 H 273.2°. Best body text is #FFFFFF at 9.51:1 contrast (WCAG AA passes).

Color values

HEX	#3031B2
RGB	rgb(48, 49, 178)
HSL	hsl(240, 58%, 44%)
HSV	hsv(240, 73%, 70%)
CMYK	cmyk(73%, 72.5%, 0%, 30.2%)
CIE-LAB	lab(29.51, 42.61, -67.96)
CIE-LCH	lch(29.51, 80.22, 302.08°)
OKLab	oklab(41.03% 0.011 -0.1966)
OKLCH	oklch(41.03% 0.197 273.2)
XYZ	xyz(10.3504, 6.0383, 42.7309)
Luminance	0.0604 (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

#3031B2 #B2B130

analogous

#3072B2 #3031B2 #7030B2

triadic

#3031B2 #B23031 #31B230

tetradic

#3031B2 #B23072 #B2B130 #30B270

square

#3031B2 #B23072 #B2B130 #30B270

split-complementary

#3031B2 #B27030 #72B230

monochromatic

#161652 #232482 #3031B2 #5051D0 #8080DD

Accessibility & contrast

On white

9.51

#3031B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#3031B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3031B2

9.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3031B2	#FFFFFF	#000000	##FFFFFF
##3031B2	1.00	9.51	2.21	9.51
#FFFFFF	9.51	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CB6

Deuteranopia (green-blind)

#003FB0

Tritanopia (blue-blind)

#00566E

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #3031b2;
/* rgb */ color: rgb(48, 49, 178);
/* oklch */ color: oklch(41.0% 0.197 273.2);

Tailwind

colors: {
  custom: {
    50: '#7c6aca',
    500: '#3031b2',
    950: '#000000',
  },
}

SCSS

$custom: #3031b2;
$custom-light: #7c6aca;
$custom-dark: #000000;

JSON

{
  "hex": "#3031b2",
  "rgb": {
    "r": 48,
    "g": 49,
    "b": 178
  },
  "hsl": {
    "h": 239.538,
    "s": 57.522,
    "l": 44.314
  },
  "oklch": {
    "l": 0.41029,
    "c": 0.19691,
    "h": 273.2
  },
  "luminance": 0.06039
}

Semantic roles & 50–950 ramp

primary

#3031B2

secondary

#C6C578

accent

#E047E1

background

#F8F6FC

surface

#EFEBF9

border

#CAC6D2

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #3031B2

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

Preview Lab → · Contrast checker → · Palette generator →