#3131D4#3131D4

#3131D4 is a dark, highly saturated blue. Relative luminance 0.076; OKLCH L 44.7% C 0.237 H 271.4°. Best body text is #FFFFFF at 8.33:1 contrast (WCAG AA passes).

Color values

HEX	#3131D4
RGB	rgb(49, 49, 212)
HSL	hsl(240, 65%, 51%)
HSV	hsv(240, 77%, 83%)
CMYK	cmyk(76.9%, 76.9%, 0%, 16.9%)
CIE-LAB	lab(33.14, 53.78, -81.93)
CIE-LCH	lch(33.14, 98.00, 303.28°)
OKLab	oklab(44.67% 0.006 -0.2372)
OKLCH	oklch(44.67% 0.237 271.4)
XYZ	xyz(14.2446, 7.6015, 62.9911)
Luminance	0.0760 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blurple

#5539CC

ΔE00 4.02

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3131D4 #D4D431

analogous

#3182D4 #3131D4 #8231D4

triadic

#3131D4 #D43131 #31D431

tetradic

#3131D4 #D43182 #D4D431 #31D482

square

#3131D4 #D43182 #D4D431 #31D482

split-complementary

#3131D4 #D48231 #82D431

monochromatic

#181873 #2323A5 #3131D4 #6464DF #9696E9

Accessibility & contrast

On white

8.33

#3131D4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#3131D4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3131D4

8.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3131D4	#FFFFFF	#000000	##FFFFFF
##3131D4	1.00	8.33	2.52	8.33
#FFFFFF	8.33	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056D9

Deuteranopia (green-blind)

#0046D1

Tritanopia (blue-blind)

#006282

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3131d4;
/* rgb */ color: rgb(49, 49, 212);
/* oklch */ color: oklch(44.7% 0.237 271.4);

Tailwind

colors: {
  custom: {
    50: '#856ce3',
    500: '#3131d4',
    950: '#000000',
  },
}

SCSS

$custom: #3131d4;
$custom-light: #856ce3;
$custom-dark: #000000;

JSON

{
  "hex": "#3131d4",
  "rgb": {
    "r": 49,
    "g": 49,
    "b": 212
  },
  "hsl": {
    "h": 240,
    "s": 65.462,
    "l": 51.176
  },
  "oklch": {
    "l": 0.44672,
    "c": 0.23727,
    "h": 271.4
  },
  "luminance": 0.07603
}

Semantic roles & 50–950 ramp

primary

#3131D4

secondary

#D4D48C

accent

#E83FE8

background

#F9F6FE

surface

#F1EBFC

border

#CBC6D5

text

#0D0716

muted

#7E7A84

Preview Lab

Preview with #3131D4

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

Preview Lab → · Contrast checker → · Palette generator →