#31309A#31309A

#31309A is a dark, vivid blue. Relative luminance 0.051; OKLCH L 38.5% C 0.167 H 275.6°. Best body text is #FFFFFF at 10.40:1 contrast (WCAG AA passes).

Color values

HEX	#31309A
RGB	rgb(49, 48, 154)
HSL	hsl(241, 52%, 40%)
HSV	hsv(241, 69%, 60%)
CMYK	cmyk(68.2%, 68.8%, 0%, 39.6%)
CIE-LAB	lab(27.02, 35.11, -57.58)
CIE-LCH	lch(27.02, 67.44, 301.38°)
OKLab	oklab(38.55% 0.0163 -0.1662)
OKLCH	oklch(38.55% 0.167 275.6)
XYZ	xyz(8.1544, 5.0992, 31.1201)
Luminance	0.0510 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31309A #999A30

analogous

#30649A #31309A #66309A

triadic

#31309A #9A3130 #309A31

tetradic

#31309A #9A3064 #999A30 #309A66

square

#31309A #9A3064 #999A30 #309A66

split-complementary

#31309A #9A6630 #649A30

monochromatic

#13133D #22216B #31309A #4443C4 #7272D3

Accessibility & contrast

On white

10.40

#31309A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#31309A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31309A

10.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31309A	#FFFFFF	#000000	##FFFFFF
##31309A	1.00	10.40	2.02	10.40
#FFFFFF	10.40	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00459D

Deuteranopia (green-blind)

#003B98

Tritanopia (blue-blind)

#004C61

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #31309a;
/* rgb */ color: rgb(49, 48, 154);
/* oklch */ color: oklch(38.5% 0.167 275.6);

Tailwind

colors: {
  custom: {
    50: '#7769b9',
    500: '#31309a',
    950: '#000000',
  },
}

SCSS

$custom: #31309a;
$custom-light: #7769b9;
$custom-dark: #000000;

JSON

{
  "hex": "#31309a",
  "rgb": {
    "r": 49,
    "g": 48,
    "b": 154
  },
  "hsl": {
    "h": 240.566,
    "s": 52.475,
    "l": 39.608
  },
  "oklch": {
    "l": 0.38547,
    "c": 0.16704,
    "h": 275.6
  },
  "luminance": 0.051
}

Semantic roles & 50–950 ramp

primary

#31309A

secondary

#BABB6B

accent

#DC4CDB

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #31309A

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

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