#3131BA#3131BA

#3131BA is a dark, highly saturated blue. Relative luminance 0.064; OKLCH L 41.9% C 0.206 H 273.0°. Best body text is #FFFFFF at 9.21:1 contrast (WCAG AA passes).

Color values

HEX	#3131BA
RGB	rgb(49, 49, 186)
HSL	hsl(240, 58%, 46%)
HSV	hsv(240, 74%, 73%)
CMYK	cmyk(73.7%, 73.7%, 0%, 27.1%)
CIE-LAB	lab(30.38, 45.38, -71.27)
CIE-LCH	lch(30.38, 84.49, 302.49°)
OKLab	oklab(41.91% 0.0108 -0.2062)
OKLCH	oklch(41.91% 0.207 273)
XYZ	xyz(11.2249, 6.3936, 47.0874)
Luminance	0.0640 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Sapphire (survey)

#2138AB

ΔE00 3.67

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3131BA #BABA31

analogous

#3175BA #3131BA #7531BA

triadic

#3131BA #BA3131 #31BA31

tetradic

#3131BA #BA3175 #BABA31 #31BA75

square

#3131BA #BA3175 #BABA31 #31BA75

split-complementary

#3131BA #BA7531 #75BA31

monochromatic

#171759 #24248A #3131BA #5656D2 #8686DF

Accessibility & contrast

On white

9.21

#3131BA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#3131BA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3131BA

9.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3131BA	#FFFFFF	#000000	##FFFFFF
##3131BA	1.00	9.21	2.28	9.21
#FFFFFF	9.21	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EBE

Deuteranopia (green-blind)

#0041B8

Tritanopia (blue-blind)

#005873

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3131ba;
/* rgb */ color: rgb(49, 49, 186);
/* oklch */ color: oklch(41.9% 0.206 273.0);

Tailwind

colors: {
  custom: {
    50: '#7f6bd0',
    500: '#3131ba',
    950: '#000000',
  },
}

SCSS

$custom: #3131ba;
$custom-light: #7f6bd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3131ba",
  "rgb": {
    "r": 49,
    "g": 49,
    "b": 186
  },
  "hsl": {
    "h": 240,
    "s": 58.298,
    "l": 46.078
  },
  "oklch": {
    "l": 0.41912,
    "c": 0.2065,
    "h": 273
  },
  "luminance": 0.06395
}

Semantic roles & 50–950 ramp

primary

#3131BA

secondary

#C9C97E

accent

#E246E2

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3131BA

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

Preview Lab → · Contrast checker → · Palette generator →