#312BB2#312BB2

#312BB2 is a dark, highly saturated blue. Relative luminance 0.056; OKLCH L 40.2% C 0.203 H 274.3°. Best body text is #FFFFFF at 9.91:1 contrast (WCAG AA passes).

Color values

HEX	#312BB2
RGB	rgb(49, 43, 178)
HSL	hsl(243, 61%, 43%)
HSV	hsv(243, 76%, 70%)
CMYK	cmyk(72.5%, 75.8%, 0%, 30.2%)
CIE-LAB	lab(28.36, 46.10, -69.85)
CIE-LCH	lch(28.36, 83.69, 303.42°)
OKLab	oklab(40.23% 0.0152 -0.202)
OKLCH	oklch(40.23% 0.203 274.3)
XYZ	xyz(10.1637, 5.5941, 42.6550)
Luminance	0.0559 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312BB2 #ACB22B

analogous

#2B68B2 #312BB2 #742BB2

triadic

#312BB2 #B2312B #2BB231

tetradic

#312BB2 #B22B68 #ACB22B #2BB274

square

#312BB2 #B22B68 #ACB22B #2BB274

split-complementary

#312BB2 #B2742B #68B22B

monochromatic

#16134F #231F81 #312BB2 #4E48D3 #7D79DF

Accessibility & contrast

On white

9.91

#312BB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#312BB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312BB2

9.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312BB2	#FFFFFF	#000000	##FFFFFF
##312BB2	1.00	9.91	2.12	9.91
#FFFFFF	9.91	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049B6

Deuteranopia (green-blind)

#003DB0

Tritanopia (blue-blind)

#00536D

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #312bb2;
/* rgb */ color: rgb(49, 43, 178);
/* oklch */ color: oklch(40.2% 0.203 274.3);

Tailwind

colors: {
  custom: {
    50: '#7d67ca',
    500: '#312bb2',
    950: '#000000',
  },
}

SCSS

$custom: #312bb2;
$custom-light: #7d67ca;
$custom-dark: #000000;

JSON

{
  "hex": "#312bb2",
  "rgb": {
    "r": 49,
    "g": 43,
    "b": 178
  },
  "hsl": {
    "h": 242.667,
    "s": 61.086,
    "l": 43.333
  },
  "oklch": {
    "l": 0.40233,
    "c": 0.20261,
    "h": 274.3
  },
  "luminance": 0.05595
}

Semantic roles & 50–950 ramp

primary

#312BB2

secondary

#C3C772

accent

#E444DD

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #312BB2

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

Preview Lab → · Contrast checker → · Palette generator →