#312BA6#312BA6

#312BA6 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 39.0% C 0.188 H 275.4°. Best body text is #FFFFFF at 10.36:1 contrast (WCAG AA passes).

Color values

HEX	#312BA6
RGB	rgb(49, 43, 166)
HSL	hsl(243, 59%, 41%)
HSV	hsv(243, 74%, 65%)
CMYK	cmyk(70.5%, 74.1%, 0%, 34.9%)
CIE-LAB	lab(27.11, 42.17, -64.71)
CIE-LCH	lch(27.11, 77.24, 303.09°)
OKLab	oklab(38.97% 0.0176 -0.1871)
OKLCH	oklch(38.97% 0.188 275.4)
XYZ	xyz(9.0112, 5.1331, 36.5849)
Luminance	0.0513 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312BA6 #A0A62B

analogous

#2B62A6 #312BA6 #6E2BA6

triadic

#312BA6 #A6312B #2BA631

tetradic

#312BA6 #A62B62 #A0A62B #2BA66E

square

#312BA6 #A62B62 #A0A62B #2BA66E

split-complementary

#312BA6 #A66E2B #62A62B

monochromatic

#141245 #231E75 #312BA6 #4741CE #7671DA

Accessibility & contrast

On white

10.36

#312BA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#312BA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312BA6

10.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312BA6	#FFFFFF	#000000	##FFFFFF
##312BA6	1.00	10.36	2.03	10.36
#FFFFFF	10.36	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0045AA

Deuteranopia (green-blind)

#003AA4

Tritanopia (blue-blind)

#004E66

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #312ba6;
/* rgb */ color: rgb(49, 43, 166);
/* oklch */ color: oklch(39.0% 0.188 275.4);

Tailwind

colors: {
  custom: {
    50: '#7b66c2',
    500: '#312ba6',
    950: '#000000',
  },
}

SCSS

$custom: #312ba6;
$custom-light: #7b66c2;
$custom-dark: #000000;

JSON

{
  "hex": "#312ba6",
  "rgb": {
    "r": 49,
    "g": 43,
    "b": 166
  },
  "hsl": {
    "h": 242.927,
    "s": 58.852,
    "l": 40.98
  },
  "oklch": {
    "l": 0.38971,
    "c": 0.1879,
    "h": 275.4
  },
  "luminance": 0.05134
}

Semantic roles & 50–950 ramp

primary

#312BA6

secondary

#BDC16B

accent

#E246DA

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #312BA6

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

Preview Lab → · Contrast checker → · Palette generator →