#312AB1#312AB1

#312AB1 is a dark, highly saturated blue. Relative luminance 0.055; OKLCH L 40.0% C 0.202 H 274.5°. Best body text is #FFFFFF at 10.02:1 contrast (WCAG AA passes).

Color values

HEX	#312AB1
RGB	rgb(49, 42, 177)
HSL	hsl(243, 62%, 43%)
HSV	hsv(243, 76%, 69%)
CMYK	cmyk(72.3%, 76.3%, 0%, 30.6%)
CIE-LAB	lab(28.07, 46.32, -69.75)
CIE-LCH	lch(28.07, 83.72, 303.59°)
OKLab	oklab(39.99% 0.0159 -0.2017)
OKLCH	oklch(39.99% 0.202 274.5)
XYZ	xyz(10.0278, 5.4822, 42.1162)
Luminance	0.0548 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312AB1 #AAB12A

analogous

#2A66B1 #312AB1 #742AB1

triadic

#312AB1 #B1312A #2AB131

tetradic

#312AB1 #B12A66 #AAB12A #2AB174

square

#312AB1 #B12A66 #AAB12A #2AB174

split-complementary

#312AB1 #B1742A #66B12A

monochromatic

#16134E #231E80 #312AB1 #4D45D3 #7C77DF

Accessibility & contrast

On white

10.02

#312AB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#312AB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312AB1

10.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312AB1	#FFFFFF	#000000	##FFFFFF
##312AB1	1.00	10.02	2.10	10.02
#FFFFFF	10.02	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048B5

Deuteranopia (green-blind)

#003CAF

Tritanopia (blue-blind)

#00526C

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #312ab1;
/* rgb */ color: rgb(49, 42, 177);
/* oklch */ color: oklch(40.0% 0.202 274.5);

Tailwind

colors: {
  custom: {
    50: '#7d66ca',
    500: '#312ab1',
    950: '#000000',
  },
}

SCSS

$custom: #312ab1;
$custom-light: #7d66ca;
$custom-dark: #000000;

JSON

{
  "hex": "#312ab1",
  "rgb": {
    "r": 49,
    "g": 42,
    "b": 177
  },
  "hsl": {
    "h": 243.111,
    "s": 61.644,
    "l": 42.941
  },
  "oklch": {
    "l": 0.39991,
    "c": 0.20234,
    "h": 274.5
  },
  "luminance": 0.05483
}

Semantic roles & 50–950 ramp

primary

#312AB1

secondary

#C2C670

accent

#E543DC

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #312AB1

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

Preview Lab → · Contrast checker → · Palette generator →