#3131C8#3131C8

#3131C8 is a dark, highly saturated blue. Relative luminance 0.070; OKLCH L 43.4% C 0.223 H 272.1°. Best body text is #FFFFFF at 8.74:1 contrast (WCAG AA passes).

Color values

HEX	#3131C8
RGB	rgb(49, 49, 200)
HSL	hsl(240, 61%, 49%)
HSV	hsv(240, 76%, 78%)
CMYK	cmyk(75.5%, 75.5%, 0%, 21.6%)
CIE-LAB	lab(31.85, 49.95, -77.08)
CIE-LCH	lch(31.85, 91.86, 302.95°)
OKLab	oklab(43.38% 0.0083 -0.2231)
OKLCH	oklch(43.38% 0.223 272.1)
XYZ	xyz(12.7868, 7.0184, 55.3132)
Luminance	0.0702 (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

#3131C8 #C8C831

analogous

#317DC8 #3131C8 #7D31C8

triadic

#3131C8 #C83131 #31C831

tetradic

#3131C8 #C8317D #C8C831 #31C87D

square

#3131C8 #C8317D #C8C831 #31C87D

split-complementary

#3131C8 #C87D31 #7DC831

monochromatic

#191966 #252597 #3131C8 #5F5FD8 #9090E4

Accessibility & contrast

On white

8.74

#3131C8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#3131C8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3131C8

8.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3131C8	#FFFFFF	#000000	##FFFFFF
##3131C8	1.00	8.74	2.40	8.74
#FFFFFF	8.74	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052CC

Deuteranopia (green-blind)

#0043C5

Tritanopia (blue-blind)

#005E7B

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3131c8;
/* rgb */ color: rgb(49, 49, 200);
/* oklch */ color: oklch(43.4% 0.223 272.1);

Tailwind

colors: {
  custom: {
    50: '#826bda',
    500: '#3131c8',
    950: '#000000',
  },
}

SCSS

$custom: #3131c8;
$custom-light: #826bda;
$custom-dark: #000000;

JSON

{
  "hex": "#3131c8",
  "rgb": {
    "r": 49,
    "g": 49,
    "b": 200
  },
  "hsl": {
    "h": 240,
    "s": 60.643,
    "l": 48.824
  },
  "oklch": {
    "l": 0.43384,
    "c": 0.22328,
    "h": 272.1
  },
  "luminance": 0.0702
}

Semantic roles & 50–950 ramp

primary

#3131C8

secondary

#CECE86

accent

#E444E4

background

#F8F6FD

surface

#F0EBFB

border

#CBC6D4

text

#0C0715

muted

#7D7A83

Preview Lab

Preview with #3131C8

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

Preview Lab → · Contrast checker → · Palette generator →