#312BB4#312BB4

#312BB4 is a dark, highly saturated blue. Relative luminance 0.057; OKLCH L 40.4% C 0.205 H 274.1°. Best body text is #FFFFFF at 9.84:1 contrast (WCAG AA passes).

Color values

HEX	#312BB4
RGB	rgb(49, 43, 180)
HSL	hsl(243, 61%, 44%)
HSV	hsv(243, 76%, 71%)
CMYK	cmyk(72.8%, 76.1%, 0%, 29.4%)
CIE-LAB	lab(28.58, 46.74, -70.69)
CIE-LCH	lch(28.58, 84.75, 303.47°)
OKLab	oklab(40.45% 0.0148 -0.2045)
OKLCH	oklch(40.45% 0.205 274.1)
XYZ	xyz(10.3660, 5.6750, 43.7202)
Luminance	0.0568 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312BB4 #AEB42B

analogous

#2B69B4 #312BB4 #752BB4

triadic

#312BB4 #B4312B #2BB431

tetradic

#312BB4 #B42B69 #AEB42B #2BB475

square

#312BB4 #B42B69 #AEB42B #2BB475

split-complementary

#312BB4 #B4752B #69B42B

monochromatic

#161351 #241F83 #312BB4 #4F49D3 #7F7ADF

Accessibility & contrast

On white

9.84

#312BB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#312BB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312BB4

9.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312BB4	#FFFFFF	#000000	##FFFFFF
##312BB4	1.00	9.84	2.14	9.84
#FFFFFF	9.84	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AB8

Deuteranopia (green-blind)

#003DB2

Tritanopia (blue-blind)

#00536E

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #312bb4;
/* rgb */ color: rgb(49, 43, 180);
/* oklch */ color: oklch(40.4% 0.205 274.1);

Tailwind

colors: {
  custom: {
    50: '#7e67cc',
    500: '#312bb4',
    950: '#000000',
  },
}

SCSS

$custom: #312bb4;
$custom-light: #7e67cc;
$custom-dark: #000000;

JSON

{
  "hex": "#312bb4",
  "rgb": {
    "r": 49,
    "g": 43,
    "b": 180
  },
  "hsl": {
    "h": 242.628,
    "s": 61.435,
    "l": 43.725
  },
  "oklch": {
    "l": 0.40446,
    "c": 0.20502,
    "h": 274.1
  },
  "luminance": 0.05676
}

Semantic roles & 50–950 ramp

primary

#312BB4

secondary

#C4C773

accent

#E543DD

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0614

muted

#7D7A82

Preview Lab

Preview with #312BB4

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

Preview Lab → · Contrast checker → · Palette generator →