#312FB1#312FB1

#312FB1 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.7% C 0.197 H 273.9°. Best body text is #FFFFFF at 9.67:1 contrast (WCAG AA passes).

Color values

HEX	#312FB1
RGB	rgb(49, 47, 177)
HSL	hsl(241, 58%, 44%)
HSV	hsv(241, 73%, 69%)
CMYK	cmyk(72.3%, 73.4%, 0%, 30.6%)
CIE-LAB	lab(29.05, 43.53, -68.11)
CIE-LCH	lch(29.05, 80.84, 302.58°)
OKLab	oklab(40.69% 0.0134 -0.197)
OKLCH	oklch(40.69% 0.197 273.9)
XYZ	xyz(10.2163, 5.8593, 42.1790)
Luminance	0.0586 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312FB1 #AFB12F

analogous

#2F6EB1 #312FB1 #722FB1

triadic

#312FB1 #B1312F #2FB131

tetradic

#312FB1 #B12F6E #AFB12F #2FB172

square

#312FB1 #B12F6E #AFB12F #2FB172

split-complementary

#312FB1 #B1722F #6EB12F

monochromatic

#161550 #242281 #312FB1 #4F4DD0 #7F7EDD

Accessibility & contrast

On white

9.67

#312FB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#312FB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312FB1

9.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312FB1	#FFFFFF	#000000	##FFFFFF
##312FB1	1.00	9.67	2.17	9.67
#FFFFFF	9.67	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BB5

Deuteranopia (green-blind)

#003EAF

Tritanopia (blue-blind)

#00546D

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #312fb1;
/* rgb */ color: rgb(49, 47, 177);
/* oklch */ color: oklch(40.7% 0.197 273.9);

Tailwind

colors: {
  custom: {
    50: '#7d69ca',
    500: '#312fb1',
    950: '#000000',
  },
}

SCSS

$custom: #312fb1;
$custom-light: #7d69ca;
$custom-dark: #000000;

JSON

{
  "hex": "#312fb1",
  "rgb": {
    "r": 49,
    "g": 47,
    "b": 177
  },
  "hsl": {
    "h": 240.923,
    "s": 58.036,
    "l": 43.922
  },
  "oklch": {
    "l": 0.40691,
    "c": 0.19746,
    "h": 273.9
  },
  "luminance": 0.0586
}

Semantic roles & 50–950 ramp

primary

#312FB1

secondary

#C4C576

accent

#E147DF

background

#F8F6FC

surface

#EFEBF9

border

#CAC6D2

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #312FB1

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

Preview Lab → · Contrast checker → · Palette generator →