#312F8E#312F8E

#312F8E is a dark, vivid blue. Relative luminance 0.046; OKLCH L 37.2% C 0.152 H 277.0°. Best body text is #FFFFFF at 10.89:1 contrast (WCAG AA passes).

Color values

HEX	#312F8E
RGB	rgb(49, 47, 142)
HSL	hsl(241, 50%, 37%)
HSV	hsv(241, 67%, 56%)
CMYK	cmyk(65.5%, 66.9%, 0%, 44.3%)
CIE-LAB	lab(25.68, 31.56, -52.38)
CIE-LCH	lch(25.68, 61.16, 301.07°)
OKLab	oklab(37.24% 0.0185 -0.151)
OKLCH	oklch(37.24% 0.152 277)
XYZ	xyz(7.1640, 4.6384, 26.1037)
Luminance	0.0464 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312F8E #8C8E2F

analogous

#2F5D8E #312F8E #612F8E

triadic

#312F8E #8E312F #2F8E31

tetradic

#312F8E #8E2F5D #8C8E2F #2F8E61

square

#312F8E #8E2F5D #8C8E2F #2F8E61

split-complementary

#312F8E #8E612F #5D8E2F

monochromatic

#111132 #212060 #312F8E #413EBC #6C6ACE

Accessibility & contrast

On white

10.89

#312F8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#312F8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312F8E

10.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312F8E	#FFFFFF	#000000	##FFFFFF
##312F8E	1.00	10.89	1.93	10.89
#FFFFFF	10.89	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004191

Deuteranopia (green-blind)

#00398C

Tritanopia (blue-blind)

#00485A

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #312f8e;
/* rgb */ color: rgb(49, 47, 142);
/* oklch */ color: oklch(37.2% 0.152 277.0);

Tailwind

colors: {
  custom: {
    50: '#7568b0',
    500: '#312f8e',
    950: '#000000',
  },
}

SCSS

$custom: #312f8e;
$custom-light: #7568b0;
$custom-dark: #000000;

JSON

{
  "hex": "#312f8e",
  "rgb": {
    "r": 49,
    "g": 47,
    "b": 142
  },
  "hsl": {
    "h": 241.263,
    "s": 50.265,
    "l": 37.059
  },
  "oklch": {
    "l": 0.37239,
    "c": 0.15216,
    "h": 277
  },
  "luminance": 0.04639
}

Semantic roles & 50–950 ramp

primary

#312F8E

secondary

#B3B564

accent

#DA4ED7

background

#F7F6FA

surface

#EEEBF5

border

#C9C6CF

text

#090611

muted

#7B7A80

Preview Lab

Preview with #312F8E

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

Preview Lab → · Contrast checker → · Palette generator →