#31399A#31399A

#31399A is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.1% C 0.156 H 273.4°. Best body text is #FFFFFF at 9.62:1 contrast (WCAG AA passes).

Color values

HEX	#31399A
RGB	rgb(49, 57, 154)
HSL	hsl(235, 52%, 40%)
HSV	hsv(235, 68%, 60%)
CMYK	cmyk(68.2%, 63%, 0%, 39.6%)
CIE-LAB	lab(29.19, 29.35, -54.02)
CIE-LCH	lch(29.19, 61.48, 298.51°)
OKLab	oklab(40.13% 0.0093 -0.1558)
OKLCH	oklch(40.13% 0.156 273.4)
XYZ	xyz(8.5605, 5.9115, 31.2555)
Luminance	0.0591 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31399A #9A9231

analogous

#316D9A #31399A #5E319A

triadic

#31399A #9A3139 #399A31

tetradic

#31399A #9A316D #9A9231 #319A5E

square

#31399A #9A316D #9A9231 #319A5E

split-complementary

#31399A #9A5E31 #6D9A31

monochromatic

#13173D #22286C #31399A #454EC4 #737AD2

Accessibility & contrast

On white

9.62

#31399A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#31399A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31399A

9.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31399A	#FFFFFF	#000000	##FFFFFF
##31399A	1.00	9.62	2.18	9.62
#FFFFFF	9.62	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9D

Deuteranopia (green-blind)

#004098

Tritanopia (blue-blind)

#005264

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #31399a;
/* rgb */ color: rgb(49, 57, 154);
/* oklch */ color: oklch(40.1% 0.156 273.4);

Tailwind

colors: {
  custom: {
    50: '#776fb9',
    500: '#31399a',
    950: '#000000',
  },
}

SCSS

$custom: #31399a;
$custom-light: #776fb9;
$custom-dark: #000000;

JSON

{
  "hex": "#31399a",
  "rgb": {
    "r": 49,
    "g": 57,
    "b": 154
  },
  "hsl": {
    "h": 235.429,
    "s": 51.724,
    "l": 39.804
  },
  "oklch": {
    "l": 0.40132,
    "c": 0.15606,
    "h": 273.4
  },
  "luminance": 0.05912
}

Semantic roles & 50–950 ramp

primary

#31399A

secondary

#BAB46C

accent

#D04DDB

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0711

muted

#7C7A80

Preview Lab

Preview with #31399A

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

Preview Lab → · Contrast checker → · Palette generator →