#3131BD#3131BD

#3131BD is a dark, highly saturated blue. Relative luminance 0.065; OKLCH L 42.2% C 0.210 H 272.8°. Best body text is #FFFFFF at 9.11:1 contrast (WCAG AA passes).

Color values

HEX	#3131BD
RGB	rgb(49, 49, 189)
HSL	hsl(240, 59%, 47%)
HSV	hsv(240, 74%, 74%)
CMYK	cmyk(74.1%, 74.1%, 0%, 25.9%)
CIE-LAB	lab(30.69, 46.37, -72.53)
CIE-LCH	lch(30.69, 86.09, 302.59°)
OKLab	oklab(42.23% 0.0103 -0.2099)
OKLCH	oklch(42.23% 0.21 272.8)
XYZ	xyz(11.5472, 6.5225, 48.7847)
Luminance	0.0652 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Sapphire (survey)

#2138AB

ΔE00 3.93

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3131BD #BDBD31

analogous

#3177BD #3131BD #7731BD

triadic

#3131BD #BD3131 #31BD31

tetradic

#3131BD #BD3177 #BDBD31 #31BD77

square

#3131BD #BD3177 #BDBD31 #31BD77

split-complementary

#3131BD #BD7731 #77BD31

monochromatic

#18185C #24248C #3131BD #5858D4 #8888E0

Accessibility & contrast

On white

9.11

#3131BD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#3131BD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3131BD

9.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3131BD	#FFFFFF	#000000	##FFFFFF
##3131BD	1.00	9.11	2.30	9.11
#FFFFFF	9.11	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FC1

Deuteranopia (green-blind)

#0041BB

Tritanopia (blue-blind)

#005A74

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3131bd;
/* rgb */ color: rgb(49, 49, 189);
/* oklch */ color: oklch(42.2% 0.210 272.8);

Tailwind

colors: {
  custom: {
    50: '#7f6bd2',
    500: '#3131bd',
    950: '#000000',
  },
}

SCSS

$custom: #3131bd;
$custom-light: #7f6bd2;
$custom-dark: #000000;

JSON

{
  "hex": "#3131bd",
  "rgb": {
    "r": 49,
    "g": 49,
    "b": 189
  },
  "hsl": {
    "h": 240,
    "s": 58.824,
    "l": 46.667
  },
  "oklch": {
    "l": 0.42225,
    "c": 0.21014,
    "h": 272.8
  },
  "luminance": 0.06524
}

Semantic roles & 50–950 ramp

primary

#3131BD

secondary

#CACA80

accent

#E246E2

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3131BD

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

Preview Lab → · Contrast checker → · Palette generator →