#31317C#31317C

#31317C is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.0% C 0.124 H 278.2°. Best body text is #FFFFFF at 11.28:1 contrast (WCAG AA passes).

Color values

HEX	#31317C
RGB	rgb(49, 49, 124)
HSL	hsl(240, 43%, 34%)
HSV	hsv(240, 60%, 49%)
CMYK	cmyk(60.5%, 60.5%, 0%, 51.4%)
CIE-LAB	lab(24.65, 23.88, -42.79)
CIE-LCH	lch(24.65, 49.01, 299.16°)
OKLab	oklab(36.01% 0.0176 -0.1229)
OKLCH	oklch(36.01% 0.124 278.2)
XYZ	xyz(6.0019, 4.3044, 19.5794)
Luminance	0.0430 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31317C #7C7C31

analogous

#31577C #31317C #57317C

triadic

#31317C #7C3131 #317C31

tetradic

#31317C #7C3157 #7C7C31 #317C57

square

#31317C #7C3157 #7C7C31 #317C57

split-complementary

#31317C #7C5731 #577C31

monochromatic

#0E0E24 #202050 #31317C #4242A8 #6565C2

Accessibility & contrast

On white

11.28

#31317C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#31317C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31317C

11.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31317C	#FFFFFF	#000000	##FFFFFF
##31317C	1.00	11.28	1.86	11.28
#FFFFFF	11.28	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E7F

Deuteranopia (green-blind)

#00377A

Tritanopia (blue-blind)

#014351

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #31317c;
/* rgb */ color: rgb(49, 49, 124);
/* oklch */ color: oklch(36.0% 0.124 278.2);

Tailwind

colors: {
  custom: {
    50: '#7169a3',
    500: '#31317c',
    950: '#000000',
  },
}

SCSS

$custom: #31317c;
$custom-light: #7169a3;
$custom-dark: #000000;

JSON

{
  "hex": "#31317c",
  "rgb": {
    "r": 49,
    "g": 49,
    "b": 124
  },
  "hsl": {
    "h": 240,
    "s": 43.353,
    "l": 33.922
  },
  "oklch": {
    "l": 0.3601,
    "c": 0.12412,
    "h": 278.2
  },
  "luminance": 0.04305
}

Semantic roles & 50–950 ramp

primary

#31317C

secondary

#AAAA5F

accent

#D355D3

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#08060F

muted

#7B7A7F

Preview Lab

Preview with #31317C

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

Preview Lab → · Contrast checker → · Palette generator →