#312BA8#312BA8

#312BA8 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 39.2% C 0.190 H 275.2°. Best body text is #FFFFFF at 10.29:1 contrast (WCAG AA passes).

Color values

HEX	#312BA8
RGB	rgb(49, 43, 168)
HSL	hsl(243, 59%, 41%)
HSV	hsv(243, 74%, 66%)
CMYK	cmyk(70.8%, 74.4%, 0%, 34.1%)
CIE-LAB	lab(27.32, 42.83, -65.58)
CIE-LCH	lch(27.32, 78.33, 303.15°)
OKLab	oklab(39.18% 0.0172 -0.1896)
OKLCH	oklch(39.18% 0.19 275.2)
XYZ	xyz(9.1961, 5.2070, 37.5586)
Luminance	0.0521 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312BA8 #A2A82B

analogous

#2B64A8 #312BA8 #702BA8

triadic

#312BA8 #A8312B #2BA831

tetradic

#312BA8 #A82B64 #A2A82B #2BA870

square

#312BA8 #A82B64 #A2A82B #2BA870

split-complementary

#312BA8 #A8702B #64A82B

monochromatic

#151247 #231F77 #312BA8 #4842CF #7772DB

Accessibility & contrast

On white

10.29

#312BA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#312BA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312BA8

10.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312BA8	#FFFFFF	#000000	##FFFFFF
##312BA8	1.00	10.29	2.04	10.29
#FFFFFF	10.29	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0046AC

Deuteranopia (green-blind)

#003BA6

Tritanopia (blue-blind)

#004F67

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #312ba8;
/* rgb */ color: rgb(49, 43, 168);
/* oklch */ color: oklch(39.2% 0.190 275.2);

Tailwind

colors: {
  custom: {
    50: '#7b66c3',
    500: '#312ba8',
    950: '#000000',
  },
}

SCSS

$custom: #312ba8;
$custom-light: #7b66c3;
$custom-dark: #000000;

JSON

{
  "hex": "#312ba8",
  "rgb": {
    "r": 49,
    "g": 43,
    "b": 168
  },
  "hsl": {
    "h": 242.88,
    "s": 59.242,
    "l": 41.373
  },
  "oklch": {
    "l": 0.39179,
    "c": 0.19038,
    "h": 275.2
  },
  "luminance": 0.05208
}

Semantic roles & 50–950 ramp

primary

#312BA8

secondary

#BEC26C

accent

#E245DB

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #312BA8

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

Preview Lab → · Contrast checker → · Palette generator →