#31398E#31398E

#31398E is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.1% C 0.139 H 273.9°. Best body text is #FFFFFF at 9.97:1 contrast (WCAG AA passes).

Color values

HEX	#31398E
RGB	rgb(49, 57, 142)
HSL	hsl(235, 49%, 37%)
HSV	hsv(235, 65%, 56%)
CMYK	cmyk(65.5%, 59.9%, 0%, 44.3%)
CIE-LAB	lab(28.20, 25.00, -48.28)
CIE-LCH	lch(28.20, 54.36, 297.37°)
OKLab	oklab(39.09% 0.0096 -0.1389)
OKLCH	oklch(39.09% 0.139 273.9)
XYZ	xyz(7.6106, 5.5316, 26.2526)
Luminance	0.0553 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31398E #8E8631

analogous

#31678E #31398E #58318E

triadic

#31398E #8E3139 #398E31

tetradic

#31398E #8E3167 #8E8631 #318E58

square

#31398E #8E3167 #8E8631 #318E58

split-complementary

#31398E #8E5831 #678E31

monochromatic

#121433 #212761 #31398E #414BBB #6D75CD

Accessibility & contrast

On white

9.97

#31398E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#31398E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31398E

9.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31398E	#FFFFFF	#000000	##FFFFFF
##31398E	1.00	9.97	2.11	9.97
#FFFFFF	9.97	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004791

Deuteranopia (green-blind)

#003F8C

Tritanopia (blue-blind)

#004E5D

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #31398e;
/* rgb */ color: rgb(49, 57, 142);
/* oklch */ color: oklch(39.1% 0.139 273.9);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#31398e",
  "rgb": {
    "r": 49,
    "g": 57,
    "b": 142
  },
  "hsl": {
    "h": 234.839,
    "s": 48.691,
    "l": 37.451
  },
  "oklch": {
    "l": 0.39091,
    "c": 0.13923,
    "h": 273.9
  },
  "luminance": 0.05532
}

Semantic roles & 50–950 ramp

primary

#31398E

secondary

#B4AD67

accent

#CC50D8

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #31398E

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

Preview Lab → · Contrast checker → · Palette generator →