#31398F#31398F

#31398F is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.2% C 0.141 H 273.9°. Best body text is #FFFFFF at 9.94:1 contrast (WCAG AA passes).

Color values

HEX	#31398F
RGB	rgb(49, 57, 143)
HSL	hsl(235, 49%, 38%)
HSV	hsv(235, 66%, 56%)
CMYK	cmyk(65.7%, 60.1%, 0%, 43.9%)
CIE-LAB	lab(28.28, 25.36, -48.76)
CIE-LCH	lch(28.28, 54.96, 297.48°)
OKLab	oklab(39.18% 0.0096 -0.1403)
OKLCH	oklch(39.18% 0.141 273.9)
XYZ	xyz(7.6860, 5.5617, 26.6498)
Luminance	0.0556 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31398F #8F8731

analogous

#31688F #31398F #58318F

triadic

#31398F #8F3139 #398F31

tetradic

#31398F #8F3168 #8F8731 #318F58

square

#31398F #8F3168 #8F8731 #318F58

split-complementary

#31398F #8F5831 #688F31

monochromatic

#121534 #212761 #31398F #414BBD #6D75CD

Accessibility & contrast

On white

9.94

#31398F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#31398F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31398F

9.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31398F	#FFFFFF	#000000	##FFFFFF
##31398F	1.00	9.94	2.11	9.94
#FFFFFF	9.94	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004792

Deuteranopia (green-blind)

#003F8D

Tritanopia (blue-blind)

#004E5E

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #31398f;
/* rgb */ color: rgb(49, 57, 143);
/* oklch */ color: oklch(39.2% 0.141 273.9);

Tailwind

colors: {
  custom: {
    50: '#746fb0',
    500: '#31398f',
    950: '#000000',
  },
}

SCSS

$custom: #31398f;
$custom-light: #746fb0;
$custom-dark: #000000;

JSON

{
  "hex": "#31398f",
  "rgb": {
    "r": 49,
    "g": 57,
    "b": 143
  },
  "hsl": {
    "h": 234.894,
    "s": 48.958,
    "l": 37.647
  },
  "oklch": {
    "l": 0.39176,
    "c": 0.14066,
    "h": 273.9
  },
  "luminance": 0.05562
}

Semantic roles & 50–950 ramp

primary

#31398F

secondary

#B5AE67

accent

#CD4FD9

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#090711

muted

#7B7A80

Preview Lab

Preview with #31398F

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

Preview Lab → · Contrast checker → · Palette generator →