#312DB1#312DB1

#312DB1 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 40.4% C 0.199 H 274.1°. Best body text is #FFFFFF at 9.81:1 contrast (WCAG AA passes).

Color values

HEX	#312DB1
RGB	rgb(49, 45, 177)
HSL	hsl(242, 59%, 44%)
HSV	hsv(242, 75%, 69%)
CMYK	cmyk(72.3%, 74.6%, 0%, 30.6%)
CIE-LAB	lab(28.65, 44.67, -68.78)
CIE-LCH	lch(28.65, 82.01, 303.00°)
OKLab	oklab(40.4% 0.0144 -0.1989)
OKLCH	oklch(40.4% 0.199 274.1)
XYZ	xyz(10.1382, 5.7031, 42.1530)
Luminance	0.0570 (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

#312DB1 #ADB12D

analogous

#2D6BB1 #312DB1 #732DB1

triadic

#312DB1 #B1312D #2DB131

tetradic

#312DB1 #B12D6B #ADB12D #2DB173

square

#312DB1 #B12D6B #ADB12D #2DB173

split-complementary

#312DB1 #B1732D #6BB12D

monochromatic

#16144F #232180 #312DB1 #4E4AD1 #7E7BDD

Accessibility & contrast

On white

9.81

#312DB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#312DB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312DB1

9.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312DB1	#FFFFFF	#000000	##FFFFFF
##312DB1	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)

#004AB5

Deuteranopia (green-blind)

#003DAF

Tritanopia (blue-blind)

#00536D

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #312db1;
/* rgb */ color: rgb(49, 45, 177);
/* oklch */ color: oklch(40.4% 0.199 274.1);

Tailwind

colors: {
  custom: {
    50: '#7d68ca',
    500: '#312db1',
    950: '#000000',
  },
}

SCSS

$custom: #312db1;
$custom-light: #7d68ca;
$custom-dark: #000000;

JSON

{
  "hex": "#312db1",
  "rgb": {
    "r": 49,
    "g": 45,
    "b": 177
  },
  "hsl": {
    "h": 241.818,
    "s": 59.459,
    "l": 43.529
  },
  "oklch": {
    "l": 0.40404,
    "c": 0.19946,
    "h": 274.1
  },
  "luminance": 0.05704
}

Semantic roles & 50–950 ramp

primary

#312DB1

secondary

#C3C674

accent

#E345DE

background

#F8F6FC

surface

#EFEBF9

border

#CAC6D2

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #312DB1

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

Preview Lab → · Contrast checker → · Palette generator →