#312AB7#312AB7

#312AB7 is a dark, highly saturated blue. Relative luminance 0.057; OKLCH L 40.6% C 0.210 H 274.0°. Best body text is #FFFFFF at 9.79:1 contrast (WCAG AA passes).

Color values

HEX	#312AB7
RGB	rgb(49, 42, 183)
HSL	hsl(243, 63%, 44%)
HSV	hsv(243, 77%, 72%)
CMYK	cmyk(73.2%, 77%, 0%, 28.2%)
CIE-LAB	lab(28.71, 48.24, -72.25)
CIE-LCH	lch(28.71, 86.88, 303.73°)
OKLab	oklab(40.64% 0.0146 -0.209)
OKLCH	oklch(40.64% 0.21 274)
XYZ	xyz(10.6390, 5.7267, 45.3352)
Luminance	0.0573 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312AB7 #B0B72A

analogous

#2A6AB7 #312AB7 #782AB7

triadic

#312AB7 #B7312A #2AB731

tetradic

#312AB7 #B72A6A #B0B72A #2AB778

square

#312AB7 #B72A6A #B0B72A #2AB778

split-complementary

#312AB7 #B7782A #6AB72A

monochromatic

#161353 #241F85 #312AB7 #5049D5 #807BE1

Accessibility & contrast

On white

9.79

#312AB7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#312AB7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312AB7

9.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312AB7	#FFFFFF	#000000	##FFFFFF
##312AB7	1.00	9.79	2.15	9.79
#FFFFFF	9.79	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004ABB

Deuteranopia (green-blind)

#003DB5

Tritanopia (blue-blind)

#00546F

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #312ab7;
/* rgb */ color: rgb(49, 42, 183);
/* oklch */ color: oklch(40.6% 0.210 274.0);

Tailwind

colors: {
  custom: {
    50: '#7f66ce',
    500: '#312ab7',
    950: '#000000',
  },
}

SCSS

$custom: #312ab7;
$custom-light: #7f66ce;
$custom-dark: #000000;

JSON

{
  "hex": "#312ab7",
  "rgb": {
    "r": 49,
    "g": 42,
    "b": 183
  },
  "hsl": {
    "h": 242.979,
    "s": 62.667,
    "l": 44.118
  },
  "oklch": {
    "l": 0.40636,
    "c": 0.20953,
    "h": 274
  },
  "luminance": 0.05728
}

Semantic roles & 50–950 ramp

primary

#312AB7

secondary

#C5C974

accent

#E642DE

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0614

muted

#7D7A82

Preview Lab

Preview with #312AB7

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

Preview Lab → · Contrast checker → · Palette generator →