#312AA6#312AA6

#312AA6 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 38.8% C 0.189 H 275.5°. Best body text is #FFFFFF at 10.44:1 contrast (WCAG AA passes).

Color values

HEX	#312AA6
RGB	rgb(49, 42, 166)
HSL	hsl(243, 60%, 41%)
HSV	hsv(243, 75%, 65%)
CMYK	cmyk(70.5%, 74.7%, 0%, 34.9%)
CIE-LAB	lab(26.91, 42.74, -65.05)
CIE-LCH	lch(26.91, 77.83, 303.31°)
OKLab	oklab(38.83% 0.0181 -0.188)
OKLCH	oklch(38.83% 0.189 275.5)
XYZ	xyz(8.9753, 5.0612, 36.5729)
Luminance	0.0506 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312AA6 #9FA62A

analogous

#2A61A6 #312AA6 #6F2AA6

triadic

#312AA6 #A6312A #2AA631

tetradic

#312AA6 #A62A61 #9FA62A #2AA66F

square

#312AA6 #A62A61 #9FA62A #2AA66F

split-complementary

#312AA6 #A66F2A #61A62A

monochromatic

#141144 #231E75 #312AA6 #473FCE #7670DB

Accessibility & contrast

On white

10.44

#312AA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#312AA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312AA6

10.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312AA6	#FFFFFF	#000000	##FFFFFF
##312AA6	1.00	10.44	2.01	10.44
#FFFFFF	10.44	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.44	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: #312aa6;
/* rgb */ color: rgb(49, 42, 166);
/* oklch */ color: oklch(38.8% 0.189 275.5);

Tailwind

colors: {
  custom: {
    50: '#7b65c2',
    500: '#312aa6',
    950: '#000000',
  },
}

SCSS

$custom: #312aa6;
$custom-light: #7b65c2;
$custom-dark: #000000;

JSON

{
  "hex": "#312aa6",
  "rgb": {
    "r": 49,
    "g": 42,
    "b": 166
  },
  "hsl": {
    "h": 243.387,
    "s": 59.615,
    "l": 40.784
  },
  "oklch": {
    "l": 0.38828,
    "c": 0.18891,
    "h": 275.5
  },
  "luminance": 0.05062
}

Semantic roles & 50–950 ramp

primary

#312AA6

secondary

#BDC26A

accent

#E345DA

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #312AA6

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

Preview Lab → · Contrast checker → · Palette generator →