#3131C9#3131C9

#3131C9 is a dark, highly saturated blue. Relative luminance 0.071; OKLCH L 43.5% C 0.224 H 272.1°. Best body text is #FFFFFF at 8.70:1 contrast (WCAG AA passes).

Color values

HEX	#3131C9
RGB	rgb(49, 49, 201)
HSL	hsl(240, 61%, 49%)
HSV	hsv(240, 76%, 79%)
CMYK	cmyk(75.6%, 75.6%, 0%, 21.2%)
CIE-LAB	lab(31.96, 50.28, -77.49)
CIE-LCH	lch(31.96, 92.37, 302.98°)
OKLab	oklab(43.49% 0.0081 -0.2243)
OKLCH	oklch(43.49% 0.224 272.1)
XYZ	xyz(12.9040, 7.0653, 55.9307)
Luminance	0.0707 (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

#3131C9 #C9C931

analogous

#317DC9 #3131C9 #7D31C9

triadic

#3131C9 #C93131 #31C931

tetradic

#3131C9 #C9317D #C9C931 #31C97D

square

#3131C9 #C9317D #C9C931 #31C97D

split-complementary

#3131C9 #C97D31 #7DC931

monochromatic

#191967 #252598 #3131C9 #5F5FD8 #9090E4

Accessibility & contrast

On white

8.70

#3131C9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#3131C9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3131C9

8.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3131C9	#FFFFFF	#000000	##FFFFFF
##3131C9	1.00	8.70	2.41	8.70
#FFFFFF	8.70	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053CD

Deuteranopia (green-blind)

#0043C6

Tritanopia (blue-blind)

#005E7B

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3131c9;
/* rgb */ color: rgb(49, 49, 201);
/* oklch */ color: oklch(43.5% 0.224 272.1);

Tailwind

colors: {
  custom: {
    50: '#826bdb',
    500: '#3131c9',
    950: '#000000',
  },
}

SCSS

$custom: #3131c9;
$custom-light: #826bdb;
$custom-dark: #000000;

JSON

{
  "hex": "#3131c9",
  "rgb": {
    "r": 49,
    "g": 49,
    "b": 201
  },
  "hsl": {
    "h": 240,
    "s": 60.8,
    "l": 49.02
  },
  "oklch": {
    "l": 0.43491,
    "c": 0.22447,
    "h": 272.1
  },
  "luminance": 0.07067
}

Semantic roles & 50–950 ramp

primary

#3131C9

secondary

#CFCF87

accent

#E444E4

background

#F8F6FD

surface

#F0EBFB

border

#CBC6D4

text

#0D0715

muted

#7D7A83

Preview Lab

Preview with #3131C9

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

Preview Lab → · Contrast checker → · Palette generator →