#312FAD#312FAD

#312FAD is a dark, vivid blue. Relative luminance 0.057; OKLCH L 40.3% C 0.193 H 274.2°. Best body text is #FFFFFF at 9.81:1 contrast (WCAG AA passes).

Color values

HEX	#312FAD
RGB	rgb(49, 47, 173)
HSL	hsl(241, 57%, 43%)
HSV	hsv(241, 73%, 68%)
CMYK	cmyk(71.7%, 72.8%, 0%, 32.2%)
CIE-LAB	lab(28.65, 42.20, -66.39)
CIE-LCH	lch(28.65, 78.67, 302.44°)
OKLab	oklab(40.28% 0.0141 -0.192)
OKLCH	oklch(40.28% 0.193 274.2)
XYZ	xyz(9.8235, 5.7022, 40.1100)
Luminance	0.0570 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.33

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312FAD #ABAD2F

analogous

#2F6CAD #312FAD #702FAD

triadic

#312FAD #AD312F #2FAD31

tetradic

#312FAD #AD2F6C #ABAD2F #2FAD70

square

#312FAD #AD2F6C #ABAD2F #2FAD70

split-complementary

#312FAD #AD702F #6CAD2F

monochromatic

#16154D #23227D #312FAD #4D4BCE #7D7BDB

Accessibility & contrast

On white

9.81

#312FAD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#312FAD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312FAD

9.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312FAD	#FFFFFF	#000000	##FFFFFF
##312FAD	1.00	9.81	2.14	9.81
#FFFFFF	9.81	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049B1

Deuteranopia (green-blind)

#003EAB

Tritanopia (blue-blind)

#00536B

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #312fad;
/* rgb */ color: rgb(49, 47, 173);
/* oklch */ color: oklch(40.3% 0.193 274.2);

Tailwind

colors: {
  custom: {
    50: '#7c69c7',
    500: '#312fad',
    950: '#000000',
  },
}

SCSS

$custom: #312fad;
$custom-light: #7c69c7;
$custom-dark: #000000;

JSON

{
  "hex": "#312fad",
  "rgb": {
    "r": 49,
    "g": 47,
    "b": 173
  },
  "hsl": {
    "h": 240.952,
    "s": 57.273,
    "l": 43.137
  },
  "oklch": {
    "l": 0.4028,
    "c": 0.1925,
    "h": 274.2
  },
  "luminance": 0.05703
}

Semantic roles & 50–950 ramp

primary

#312FAD

secondary

#C2C474

accent

#E147DE

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #312FAD

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

Preview Lab → · Contrast checker → · Palette generator →