#312DB0#312DB0

#312DB0 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 40.3% C 0.198 H 274.2°. Best body text is #FFFFFF at 9.85:1 contrast (WCAG AA passes).

Color values

HEX	#312DB0
RGB	rgb(49, 45, 176)
HSL	hsl(242, 59%, 43%)
HSV	hsv(242, 74%, 69%)
CMYK	cmyk(72.2%, 74.4%, 0%, 31%)
CIE-LAB	lab(28.55, 44.34, -68.36)
CIE-LCH	lch(28.55, 81.48, 302.97°)
OKLab	oklab(40.3% 0.0146 -0.1977)
OKLCH	oklch(40.3% 0.198 274.2)
XYZ	xyz(10.0389, 5.6633, 41.6300)
Luminance	0.0566 (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

#312DB0 #ACB02D

analogous

#2D6AB0 #312DB0 #722DB0

triadic

#312DB0 #B0312D #2DB031

tetradic

#312DB0 #B02D6A #ACB02D #2DB072

square

#312DB0 #B02D6A #ACB02D #2DB072

split-complementary

#312DB0 #B0722D #6AB02D

monochromatic

#16144F #23217F #312DB0 #4E4AD1 #7D7ADD

Accessibility & contrast

On white

9.85

#312DB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#312DB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312DB0

9.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312DB0	#FFFFFF	#000000	##FFFFFF
##312DB0	1.00	9.85	2.13	9.85
#FFFFFF	9.85	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049B4

Deuteranopia (green-blind)

#003DAE

Tritanopia (blue-blind)

#00536C

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #312db0;
/* rgb */ color: rgb(49, 45, 176);
/* oklch */ color: oklch(40.3% 0.198 274.2);

Tailwind

colors: {
  custom: {
    50: '#7d68c9',
    500: '#312db0',
    950: '#000000',
  },
}

SCSS

$custom: #312db0;
$custom-light: #7d68c9;
$custom-dark: #000000;

JSON

{
  "hex": "#312db0",
  "rgb": {
    "r": 49,
    "g": 45,
    "b": 176
  },
  "hsl": {
    "h": 241.832,
    "s": 59.276,
    "l": 43.333
  },
  "oklch": {
    "l": 0.40299,
    "c": 0.19824,
    "h": 274.2
  },
  "luminance": 0.05664
}

Semantic roles & 50–950 ramp

primary

#312DB0

secondary

#C3C573

accent

#E245DE

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #312DB0

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

Preview Lab → · Contrast checker → · Palette generator →