#31338F#31338F

#31338F is a dark, vivid blue. Relative luminance 0.050; OKLCH L 38.0% C 0.148 H 275.8°. Best body text is #FFFFFF at 10.50:1 contrast (WCAG AA passes).

Color values

HEX	#31338F
RGB	rgb(49, 51, 143)
HSL	hsl(239, 49%, 38%)
HSV	hsv(239, 66%, 56%)
CMYK	cmyk(65.7%, 64.3%, 0%, 43.9%)
CIE-LAB	lab(26.74, 29.33, -51.26)
CIE-LCH	lch(26.74, 59.06, 299.77°)
OKLab	oklab(38.04% 0.015 -0.1477)
OKLCH	oklch(38.04% 0.148 275.8)
XYZ	xyz(7.4068, 5.0032, 26.5567)
Luminance	0.0500 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31338F #8F8D31

analogous

#31628F #31338F #5E318F

triadic

#31338F #8F3133 #338F31

tetradic

#31338F #8F3162 #8F8D31 #318F5E

square

#31338F #8F3162 #8F8D31 #318F5E

split-complementary

#31338F #8F5E31 #628F31

monochromatic

#121234 #212361 #31338F #4143BD #6D6FCD

Accessibility & contrast

On white

10.50

#31338F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#31338F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31338F

10.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31338F	#FFFFFF	#000000	##FFFFFF
##31338F	1.00	10.50	2.00	10.50
#FFFFFF	10.50	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004392

Deuteranopia (green-blind)

#003B8D

Tritanopia (blue-blind)

#004A5C

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #31338f;
/* rgb */ color: rgb(49, 51, 143);
/* oklch */ color: oklch(38.0% 0.148 275.8);

Tailwind

colors: {
  custom: {
    50: '#756bb1',
    500: '#31338f',
    950: '#000000',
  },
}

SCSS

$custom: #31338f;
$custom-light: #756bb1;
$custom-dark: #000000;

JSON

{
  "hex": "#31338f",
  "rgb": {
    "r": 49,
    "g": 51,
    "b": 143
  },
  "hsl": {
    "h": 238.723,
    "s": 48.958,
    "l": 37.647
  },
  "oklch": {
    "l": 0.38044,
    "c": 0.14849,
    "h": 275.8
  },
  "luminance": 0.05004
}

Semantic roles & 50–950 ramp

primary

#31338F

secondary

#B5B367

accent

#D64FD9

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090611

muted

#7B7A80

Preview Lab

Preview with #31338F

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

Preview Lab → · Contrast checker → · Palette generator →