#31399F#31399F

#31399F is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.6% C 0.163 H 273.2°. Best body text is #FFFFFF at 9.47:1 contrast (WCAG AA passes).

Color values

HEX	#31399F
RGB	rgb(49, 57, 159)
HSL	hsl(236, 53%, 41%)
HSV	hsv(236, 69%, 62%)
CMYK	cmyk(69.2%, 64.2%, 0%, 37.6%)
CIE-LAB	lab(29.62, 31.15, -56.36)
CIE-LCH	lch(29.62, 64.39, 298.93°)
OKLab	oklab(40.58% 0.0091 -0.1626)
OKLCH	oklch(40.58% 0.163 273.2)
XYZ	xyz(8.9857, 6.0816, 33.4945)
Luminance	0.0608 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31399F #9F9731

analogous

#31709F #31399F #60319F

triadic

#31399F #9F3139 #399F31

tetradic

#31399F #9F3170 #9F9731 #319F60

square

#31399F #9F3170 #9F9731 #319F60

split-complementary

#31399F #9F6031 #709F31

monochromatic

#141741 #232870 #31399F #4750C6 #767DD5

Accessibility & contrast

On white

9.47

#31399F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#31399F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31399F

9.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31399F	#FFFFFF	#000000	##FFFFFF
##31399F	1.00	9.47	2.22	9.47
#FFFFFF	9.47	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA2

Deuteranopia (green-blind)

#00419D

Tritanopia (blue-blind)

#005366

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #31399f;
/* rgb */ color: rgb(49, 57, 159);
/* oklch */ color: oklch(40.6% 0.163 273.2);

Tailwind

colors: {
  custom: {
    50: '#786fbc',
    500: '#31399f',
    950: '#000000',
  },
}

SCSS

$custom: #31399f;
$custom-light: #786fbc;
$custom-dark: #000000;

JSON

{
  "hex": "#31399f",
  "rgb": {
    "r": 49,
    "g": 57,
    "b": 159
  },
  "hsl": {
    "h": 235.636,
    "s": 52.885,
    "l": 40.784
  },
  "oklch": {
    "l": 0.40581,
    "c": 0.16289,
    "h": 273.2
  },
  "luminance": 0.06082
}

Semantic roles & 50–950 ramp

primary

#31399F

secondary

#BDB76F

accent

#D24CDC

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #31399F

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

Preview Lab → · Contrast checker → · Palette generator →