#312D91#312D91

#312D91 is a dark, vivid blue. Relative luminance 0.046; OKLCH L 37.2% C 0.159 H 277.1°. Best body text is #FFFFFF at 10.97:1 contrast (WCAG AA passes).

Color values

HEX	#312D91
RGB	rgb(49, 45, 145)
HSL	hsl(242, 53%, 37%)
HSV	hsv(242, 69%, 57%)
CMYK	cmyk(66.2%, 69%, 0%, 43.1%)
CIE-LAB	lab(25.48, 33.87, -54.56)
CIE-LCH	lch(25.48, 64.22, 301.83°)
OKLab	oklab(37.18% 0.0197 -0.1574)
OKLCH	oklch(37.18% 0.159 277.1)
XYZ	xyz(7.3142, 4.5735, 27.2799)
Luminance	0.0457 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312D91 #8D912D

analogous

#2D5B91 #312D91 #632D91

triadic

#312D91 #91312D #2D9131

tetradic

#312D91 #912D5B #8D912D #2D9163

square

#312D91 #912D5B #8D912D #2D9163

split-complementary

#312D91 #91632D #5B912D

monochromatic

#111034 #211F62 #312D91 #413BC0 #6C68D0

Accessibility & contrast

On white

10.97

#312D91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#312D91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312D91

10.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312D91	#FFFFFF	#000000	##FFFFFF
##312D91	1.00	10.97	1.91	10.97
#FFFFFF	10.97	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	10.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004194

Deuteranopia (green-blind)

#00388F

Tritanopia (blue-blind)

#00475B

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #312d91;
/* rgb */ color: rgb(49, 45, 145);
/* oklch */ color: oklch(37.2% 0.159 277.1);

Tailwind

colors: {
  custom: {
    50: '#7667b2',
    500: '#312d91',
    950: '#000000',
  },
}

SCSS

$custom: #312d91;
$custom-light: #7667b2;
$custom-dark: #000000;

JSON

{
  "hex": "#312d91",
  "rgb": {
    "r": 49,
    "g": 45,
    "b": 145
  },
  "hsl": {
    "h": 242.4,
    "s": 52.632,
    "l": 37.255
  },
  "oklch": {
    "l": 0.37182,
    "c": 0.15865,
    "h": 277.1
  },
  "luminance": 0.04574
}

Semantic roles & 50–950 ramp

primary

#312D91

secondary

#B4B763

accent

#DC4CD6

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090611

muted

#7B7A80

Preview Lab

Preview with #312D91

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

Preview Lab → · Contrast checker → · Palette generator →