#3131C4#3131C4

#3131C4 is a dark, highly saturated blue. Relative luminance 0.068; OKLCH L 43.0% C 0.219 H 272.4°. Best body text is #FFFFFF at 8.87:1 contrast (WCAG AA passes).

Color values

HEX	#3131C4
RGB	rgb(49, 49, 196)
HSL	hsl(240, 60%, 48%)
HSV	hsv(240, 75%, 77%)
CMYK	cmyk(75%, 75%, 0%, 23.1%)
CIE-LAB	lab(31.43, 48.66, -75.44)
CIE-LCH	lch(31.43, 89.77, 302.82°)
OKLab	oklab(42.96% 0.009 -0.2184)
OKLCH	oklch(42.96% 0.219 272.4)
XYZ	xyz(12.3254, 6.8338, 52.8833)
Luminance	0.0683 (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

#3131C4 #C4C431

analogous

#317AC4 #3131C4 #7A31C4

triadic

#3131C4 #C43131 #31C431

tetradic

#3131C4 #C4317A #C4C431 #31C47A

square

#3131C4 #C4317A #C4C431 #31C47A

split-complementary

#3131C4 #C47A31 #7AC431

monochromatic

#191962 #252593 #3131C4 #5C5CD6 #8D8DE2

Accessibility & contrast

On white

8.87

#3131C4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#3131C4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3131C4

8.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3131C4	#FFFFFF	#000000	##FFFFFF
##3131C4	1.00	8.87	2.37	8.87
#FFFFFF	8.87	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051C8

Deuteranopia (green-blind)

#0043C1

Tritanopia (blue-blind)

#005C78

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3131c4;
/* rgb */ color: rgb(49, 49, 196);
/* oklch */ color: oklch(43.0% 0.219 272.4);

Tailwind

colors: {
  custom: {
    50: '#816bd7',
    500: '#3131c4',
    950: '#000000',
  },
}

SCSS

$custom: #3131c4;
$custom-light: #816bd7;
$custom-dark: #000000;

JSON

{
  "hex": "#3131c4",
  "rgb": {
    "r": 49,
    "g": 49,
    "b": 196
  },
  "hsl": {
    "h": 240,
    "s": 60,
    "l": 48.039
  },
  "oklch": {
    "l": 0.4296,
    "c": 0.21855,
    "h": 272.4
  },
  "luminance": 0.06835
}

Semantic roles & 50–950 ramp

primary

#3131C4

secondary

#CDCD84

accent

#E345E3

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0C0715

muted

#7D7A83

Preview Lab

Preview with #3131C4

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

Preview Lab → · Contrast checker → · Palette generator →