#312AB8#312AB8

#312AB8 is a dark, highly saturated blue. Relative luminance 0.058; OKLCH L 40.7% C 0.211 H 273.9°. Best body text is #FFFFFF at 9.75:1 contrast (WCAG AA passes).

Color values

HEX	#312AB8
RGB	rgb(49, 42, 184)
HSL	hsl(243, 63%, 44%)
HSV	hsv(243, 77%, 72%)
CMYK	cmyk(73.4%, 77.2%, 0%, 27.8%)
CIE-LAB	lab(28.82, 48.56, -72.67)
CIE-LCH	lch(28.82, 87.40, 303.75°)
OKLab	oklab(40.74% 0.0143 -0.2102)
OKLCH	oklch(40.74% 0.211 273.9)
XYZ	xyz(10.7434, 5.7685, 45.8853)
Luminance	0.0577 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312AB8 #B1B82A

analogous

#2A6AB8 #312AB8 #782AB8

triadic

#312AB8 #B8312A #2AB831

tetradic

#312AB8 #B82A6A #B1B82A #2AB878

square

#312AB8 #B82A6A #B1B82A #2AB878

split-complementary

#312AB8 #B8782A #6AB82A

monochromatic

#161354 #241F86 #312AB8 #514AD6 #807BE1

Accessibility & contrast

On white

9.75

#312AB8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#312AB8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312AB8

9.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312AB8	#FFFFFF	#000000	##FFFFFF
##312AB8	1.00	9.75	2.15	9.75
#FFFFFF	9.75	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004ABC

Deuteranopia (green-blind)

#003DB6

Tritanopia (blue-blind)

#005570

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #312ab8;
/* rgb */ color: rgb(49, 42, 184);
/* oklch */ color: oklch(40.7% 0.211 273.9);

Tailwind

colors: {
  custom: {
    50: '#7f66cf',
    500: '#312ab8',
    950: '#000000',
  },
}

SCSS

$custom: #312ab8;
$custom-light: #7f66cf;
$custom-dark: #000000;

JSON

{
  "hex": "#312ab8",
  "rgb": {
    "r": 49,
    "g": 42,
    "b": 184
  },
  "hsl": {
    "h": 242.958,
    "s": 62.832,
    "l": 44.314
  },
  "oklch": {
    "l": 0.40744,
    "c": 0.21071,
    "h": 273.9
  },
  "luminance": 0.0577
}

Semantic roles & 50–950 ramp

primary

#312AB8

secondary

#C5C975

accent

#E642DE

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0614

muted

#7D7A82

Preview Lab

Preview with #312AB8

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

Preview Lab → · Contrast checker → · Palette generator →