#3031B8#3031B8

#3031B8 is a dark, highly saturated blue. Relative luminance 0.063; OKLCH L 41.6% C 0.204 H 272.8°. Best body text is #FFFFFF at 9.30:1 contrast (WCAG AA passes).

Color values

HEX	#3031B8
RGB	rgb(48, 49, 184)
HSL	hsl(240, 59%, 45%)
HSV	hsv(240, 74%, 72%)
CMYK	cmyk(73.9%, 73.4%, 0%, 27.8%)
CIE-LAB	lab(30.12, 44.62, -70.53)
CIE-LCH	lch(30.12, 83.46, 302.32°)
OKLab	oklab(41.65% 0.01 -0.2041)
OKLCH	oklch(41.65% 0.204 272.8)
XYZ	xyz(10.9661, 6.2846, 45.9732)
Luminance	0.0629 (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

#3031B8 #B8B730

analogous

#3075B8 #3031B8 #7330B8

triadic

#3031B8 #B83031 #31B830

tetradic

#3031B8 #B83075 #B8B730 #30B873

square

#3031B8 #B83075 #B8B730 #30B873

split-complementary

#3031B8 #B87330 #75B830

monochromatic

#171757 #232487 #3031B8 #5354D2 #8484DF

Accessibility & contrast

On white

9.30

#3031B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#3031B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3031B8

9.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3031B8	#FFFFFF	#000000	##FFFFFF
##3031B8	1.00	9.30	2.26	9.30
#FFFFFF	9.30	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DBC

Deuteranopia (green-blind)

#0040B6

Tritanopia (blue-blind)

#005872

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #3031b8;
/* rgb */ color: rgb(48, 49, 184);
/* oklch */ color: oklch(41.6% 0.204 272.8);

Tailwind

colors: {
  custom: {
    50: '#7e6bcf',
    500: '#3031b8',
    950: '#000000',
  },
}

SCSS

$custom: #3031b8;
$custom-light: #7e6bcf;
$custom-dark: #000000;

JSON

{
  "hex": "#3031b8",
  "rgb": {
    "r": 48,
    "g": 49,
    "b": 184
  },
  "hsl": {
    "h": 239.559,
    "s": 58.621,
    "l": 45.49
  },
  "oklch": {
    "l": 0.41647,
    "c": 0.20431,
    "h": 272.8
  },
  "luminance": 0.06286
}

Semantic roles & 50–950 ramp

primary

#3031B8

secondary

#C8C87C

accent

#E146E2

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3031B8

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

Preview Lab → · Contrast checker → · Palette generator →