#3131CF#3131CF

#3131CF is a dark, highly saturated blue. Relative luminance 0.074; OKLCH L 44.1% C 0.231 H 271.7°. Best body text is #FFFFFF at 8.50:1 contrast (WCAG AA passes).

Color values

HEX	#3131CF
RGB	rgb(49, 49, 207)
HSL	hsl(240, 62%, 50%)
HSV	hsv(240, 76%, 81%)
CMYK	cmyk(76.3%, 76.3%, 0%, 18.8%)
CIE-LAB	lab(32.60, 52.20, -79.92)
CIE-LCH	lch(32.60, 95.46, 303.15°)
OKLab	oklab(44.13% 0.007 -0.2314)
OKLCH	oklch(44.13% 0.231 271.7)
XYZ	xyz(13.6236, 7.3531, 59.7207)
Luminance	0.0736 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blurple

#5539CC

ΔE00 4.14

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3131CF #CFCF31

analogous

#3180CF #3131CF #8031CF

triadic

#3131CF #CF3131 #31CF31

tetradic

#3131CF #CF3180 #CFCF31 #31CF80

square

#3131CF #CF3180 #CFCF31 #31CF80

split-complementary

#3131CF #CF8031 #80CF31

monochromatic

#19196C #25259E #3131CF #6363DB #9494E6

Accessibility & contrast

On white

8.50

#3131CF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#3131CF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3131CF

8.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3131CF	#FFFFFF	#000000	##FFFFFF
##3131CF	1.00	8.50	2.47	8.50
#FFFFFF	8.50	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054D3

Deuteranopia (green-blind)

#0045CC

Tritanopia (blue-blind)

#00617F

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3131cf;
/* rgb */ color: rgb(49, 49, 207);
/* oklch */ color: oklch(44.1% 0.231 271.7);

Tailwind

colors: {
  custom: {
    50: '#846cdf',
    500: '#3131cf',
    950: '#000000',
  },
}

SCSS

$custom: #3131cf;
$custom-light: #846cdf;
$custom-dark: #000000;

JSON

{
  "hex": "#3131cf",
  "rgb": {
    "r": 49,
    "g": 49,
    "b": 207
  },
  "hsl": {
    "h": 240,
    "s": 62.205,
    "l": 50.196
  },
  "oklch": {
    "l": 0.44133,
    "c": 0.23148,
    "h": 271.7
  },
  "luminance": 0.07355
}

Semantic roles & 50–950 ramp

primary

#3131CF

secondary

#D1D18B

accent

#E543E5

background

#F9F6FD

surface

#F1EBFB

border

#CBC6D4

text

#0D0715

muted

#7E7A83

Preview Lab

Preview with #3131CF

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

Preview Lab → · Contrast checker → · Palette generator →