#312CB1#312CB1

#312CB1 is a dark, highly saturated blue. Relative luminance 0.056; OKLCH L 40.3% C 0.200 H 274.3°. Best body text is #FFFFFF at 9.88:1 contrast (WCAG AA passes).

Color values

HEX	#312CB1
RGB	rgb(49, 44, 177)
HSL	hsl(242, 60%, 43%)
HSV	hsv(242, 75%, 69%)
CMYK	cmyk(72.3%, 75.1%, 0%, 30.6%)
CIE-LAB	lab(28.45, 45.22, -69.11)
CIE-LCH	lch(28.45, 82.59, 303.20°)
OKLab	oklab(40.26% 0.0149 -0.1999)
OKLCH	oklch(40.26% 0.2 274.3)
XYZ	xyz(10.1005, 5.6277, 42.1404)
Luminance	0.0563 (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

#312CB1 #ACB12C

analogous

#2C69B1 #312CB1 #732CB1

triadic

#312CB1 #B1312C #2CB131

tetradic

#312CB1 #B12C69 #ACB12C #2CB173

square

#312CB1 #B12C69 #ACB12C #2CB173

split-complementary

#312CB1 #B1732C #69B12C

monochromatic

#16144F #232080 #312CB1 #4E49D2 #7D7ADE

Accessibility & contrast

On white

9.88

#312CB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#312CB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312CB1

9.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312CB1	#FFFFFF	#000000	##FFFFFF
##312CB1	1.00	9.88	2.13	9.88
#FFFFFF	9.88	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049B5

Deuteranopia (green-blind)

#003DAF

Tritanopia (blue-blind)

#00536C

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #312cb1;
/* rgb */ color: rgb(49, 44, 177);
/* oklch */ color: oklch(40.3% 0.200 274.3);

Tailwind

colors: {
  custom: {
    50: '#7d67ca',
    500: '#312cb1',
    950: '#000000',
  },
}

SCSS

$custom: #312cb1;
$custom-light: #7d67ca;
$custom-dark: #000000;

JSON

{
  "hex": "#312cb1",
  "rgb": {
    "r": 49,
    "g": 44,
    "b": 177
  },
  "hsl": {
    "h": 242.256,
    "s": 60.181,
    "l": 43.333
  },
  "oklch": {
    "l": 0.40264,
    "c": 0.20043,
    "h": 274.3
  },
  "luminance": 0.05629
}

Semantic roles & 50–950 ramp

primary

#312CB1

secondary

#C3C673

accent

#E344DD

background

#F8F6FC

surface

#EFEBF9

border

#CAC6D2

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #312CB1

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

Preview Lab → · Contrast checker → · Palette generator →