#31307E#31307E

#31307E is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.0% C 0.128 H 278.3°. Best body text is #FFFFFF at 11.32:1 contrast (WCAG AA passes).

Color values

HEX	#31307E
RGB	rgb(49, 48, 126)
HSL	hsl(241, 45%, 34%)
HSV	hsv(241, 62%, 49%)
CMYK	cmyk(61.1%, 61.9%, 0%, 50.6%)
CIE-LAB	lab(24.55, 25.26, -44.22)
CIE-LCH	lch(24.55, 50.92, 299.74°)
OKLab	oklab(35.99% 0.0186 -0.127)
OKLCH	oklch(35.99% 0.128 278.3)
XYZ	xyz(6.0883, 4.2728, 20.2385)
Luminance	0.0427 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31307E #7D7E30

analogous

#30567E #31307E #58307E

triadic

#31307E #7E3130 #307E31

tetradic

#31307E #7E3056 #7D7E30 #307E58

square

#31307E #7E3056 #7D7E30 #307E58

split-complementary

#31307E #7E5830 #567E30

monochromatic

#0F0E25 #201F52 #31307E #4241AA #6664C4

Accessibility & contrast

On white

11.32

#31307E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#31307E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31307E

11.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31307E	#FFFFFF	#000000	##FFFFFF
##31307E	1.00	11.32	1.85	11.32
#FFFFFF	11.32	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E81

Deuteranopia (green-blind)

#00377C

Tritanopia (blue-blind)

#004352

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #31307e;
/* rgb */ color: rgb(49, 48, 126);
/* oklch */ color: oklch(36.0% 0.128 278.3);

Tailwind

colors: {
  custom: {
    50: '#7268a4',
    500: '#31307e',
    950: '#000000',
  },
}

SCSS

$custom: #31307e;
$custom-light: #7268a4;
$custom-dark: #000000;

JSON

{
  "hex": "#31307e",
  "rgb": {
    "r": 49,
    "g": 48,
    "b": 126
  },
  "hsl": {
    "h": 240.769,
    "s": 44.828,
    "l": 34.118
  },
  "oklch": {
    "l": 0.35987,
    "c": 0.12841,
    "h": 278.3
  },
  "luminance": 0.04273
}

Semantic roles & 50–950 ramp

primary

#31307E

secondary

#AAAB5F

accent

#D553D3

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#08060F

muted

#7B7A7F

Preview Lab

Preview with #31307E

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

Preview Lab → · Contrast checker → · Palette generator →