#312FB3#312FB3

#312FB3 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.9% C 0.200 H 273.7°. Best body text is #FFFFFF at 9.60:1 contrast (WCAG AA passes).

Color values

HEX	#312FB3
RGB	rgb(49, 47, 179)
HSL	hsl(241, 58%, 44%)
HSV	hsv(241, 74%, 70%)
CMYK	cmyk(72.6%, 73.7%, 0%, 29.8%)
CIE-LAB	lab(29.26, 44.20, -68.97)
CIE-LCH	lch(29.26, 81.91, 302.65°)
OKLab	oklab(40.9% 0.013 -0.1995)
OKLCH	oklch(40.9% 0.2 273.7)
XYZ	xyz(10.4171, 5.9396, 43.2366)
Luminance	0.0594 (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

#312FB3 #B1B32F

analogous

#2F6FB3 #312FB3 #732FB3

triadic

#312FB3 #B3312F #2FB331

tetradic

#312FB3 #B32F6F #B1B32F #2FB373

square

#312FB3 #B32F6F #B1B32F #2FB373

split-complementary

#312FB3 #B3732F #6FB32F

monochromatic

#161652 #242283 #312FB3 #514FD1 #807FDD

Accessibility & contrast

On white

9.60

#312FB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#312FB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312FB3

9.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312FB3	#FFFFFF	#000000	##FFFFFF
##312FB3	1.00	9.60	2.19	9.60
#FFFFFF	9.60	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BB7

Deuteranopia (green-blind)

#003FB1

Tritanopia (blue-blind)

#00556E

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #312fb3;
/* rgb */ color: rgb(49, 47, 179);
/* oklch */ color: oklch(40.9% 0.200 273.7);

Tailwind

colors: {
  custom: {
    50: '#7d69cb',
    500: '#312fb3',
    950: '#000000',
  },
}

SCSS

$custom: #312fb3;
$custom-light: #7d69cb;
$custom-dark: #000000;

JSON

{
  "hex": "#312fb3",
  "rgb": {
    "r": 49,
    "g": 47,
    "b": 179
  },
  "hsl": {
    "h": 240.909,
    "s": 58.407,
    "l": 44.314
  },
  "oklch": {
    "l": 0.40898,
    "c": 0.19992,
    "h": 273.7
  },
  "luminance": 0.05941
}

Semantic roles & 50–950 ramp

primary

#312FB3

secondary

#C5C678

accent

#E246DF

background

#F8F6FC

surface

#EFEBF9

border

#CAC6D2

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #312FB3

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

Preview Lab → · Contrast checker → · Palette generator →