#312AA8#312AA8

#312AA8 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 39.0% C 0.191 H 275.3°. Best body text is #FFFFFF at 10.36:1 contrast (WCAG AA passes).

Color values

HEX	#312AA8
RGB	rgb(49, 42, 168)
HSL	hsl(243, 60%, 41%)
HSV	hsv(243, 75%, 66%)
CMYK	cmyk(70.8%, 75%, 0%, 34.1%)
CIE-LAB	lab(27.12, 43.39, -65.91)
CIE-LCH	lch(27.12, 78.91, 303.36°)
OKLab	oklab(39.04% 0.0177 -0.1906)
OKLCH	oklch(39.04% 0.191 275.3)
XYZ	xyz(9.1601, 5.1352, 37.5466)
Luminance	0.0514 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312AA8 #A1A82A

analogous

#2A62A8 #312AA8 #702AA8

triadic

#312AA8 #A8312A #2AA831

tetradic

#312AA8 #A82A62 #A1A82A #2AA870

square

#312AA8 #A82A62 #A1A82A #2AA870

split-complementary

#312AA8 #A8702A #62A82A

monochromatic

#141246 #231E77 #312AA8 #4840CF #7771DB

Accessibility & contrast

On white

10.36

#312AA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#312AA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312AA8

10.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312AA8	#FFFFFF	#000000	##FFFFFF
##312AA8	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)

#0046AC

Deuteranopia (green-blind)

#003AA6

Tritanopia (blue-blind)

#004E67

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #312aa8;
/* rgb */ color: rgb(49, 42, 168);
/* oklch */ color: oklch(39.0% 0.191 275.3);

Tailwind

colors: {
  custom: {
    50: '#7b66c3',
    500: '#312aa8',
    950: '#000000',
  },
}

SCSS

$custom: #312aa8;
$custom-light: #7b66c3;
$custom-dark: #000000;

JSON

{
  "hex": "#312aa8",
  "rgb": {
    "r": 49,
    "g": 42,
    "b": 168
  },
  "hsl": {
    "h": 243.333,
    "s": 60,
    "l": 41.176
  },
  "oklch": {
    "l": 0.39037,
    "c": 0.19138,
    "h": 275.3
  },
  "luminance": 0.05136
}

Semantic roles & 50–950 ramp

primary

#312AA8

secondary

#BEC36B

accent

#E345DA

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #312AA8

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

Preview Lab → · Contrast checker → · Palette generator →