#312F7D#312F7D

#312F7D is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.7% C 0.128 H 278.8°. Best body text is #FFFFFF at 11.45:1 contrast (WCAG AA passes).

Color values

HEX	#312F7D
RGB	rgb(49, 47, 125)
HSL	hsl(242, 45%, 34%)
HSV	hsv(242, 62%, 49%)
CMYK	cmyk(60.8%, 62.4%, 0%, 51%)
CIE-LAB	lab(24.21, 25.57, -44.14)
CIE-LCH	lch(24.21, 51.01, 300.08°)
OKLab	oklab(35.71% 0.0197 -0.1268)
OKLCH	oklch(35.71% 0.128 278.8)
XYZ	xyz(5.9836, 4.1662, 19.8869)
Luminance	0.0417 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312F7D #7B7D2F

analogous

#2F547D #312F7D #582F7D

triadic

#312F7D #7D312F #2F7D31

tetradic

#312F7D #7D2F54 #7B7D2F #2F7D58

square

#312F7D #7D2F54 #7B7D2F #2F7D58

split-complementary

#312F7D #7D582F #547D2F

monochromatic

#0E0E24 #201E51 #312F7D #4240A9 #6562C4

Accessibility & contrast

On white

11.45

#312F7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#312F7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312F7D

11.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312F7D	#FFFFFF	#000000	##FFFFFF
##312F7D	1.00	11.45	1.83	11.45
#FFFFFF	11.45	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D80

Deuteranopia (green-blind)

#00367B

Tritanopia (blue-blind)

#004251

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #312f7d;
/* rgb */ color: rgb(49, 47, 125);
/* oklch */ color: oklch(35.7% 0.128 278.8);

Tailwind

colors: {
  custom: {
    50: '#7167a3',
    500: '#312f7d',
    950: '#000000',
  },
}

SCSS

$custom: #312f7d;
$custom-light: #7167a3;
$custom-dark: #000000;

JSON

{
  "hex": "#312f7d",
  "rgb": {
    "r": 49,
    "g": 47,
    "b": 125
  },
  "hsl": {
    "h": 241.538,
    "s": 45.349,
    "l": 33.725
  },
  "oklch": {
    "l": 0.35711,
    "c": 0.12835,
    "h": 278.8
  },
  "luminance": 0.04167
}

Semantic roles & 50–950 ramp

primary

#312F7D

secondary

#A9AB5D

accent

#D553D2

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#08060F

muted

#7B7A7F

Preview Lab

Preview with #312F7D

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

Preview Lab → · Contrast checker → · Palette generator →