#313E9E#313E9E

#313E9E is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.4% C 0.155 H 271.9°. Best body text is #FFFFFF at 9.08:1 contrast (WCAG AA passes).

Color values

HEX	#313E9E
RGB	rgb(49, 62, 158)
HSL	hsl(233, 53%, 41%)
HSV	hsv(233, 69%, 62%)
CMYK	cmyk(69%, 60.8%, 0%, 38%)
CIE-LAB	lab(30.80, 27.51, -53.83)
CIE-LCH	lch(30.80, 60.45, 297.07°)
OKLab	oklab(41.43% 0.0051 -0.1552)
OKLCH	oklch(41.43% 0.155 271.9)
XYZ	xyz(9.1587, 6.5660, 33.1258)
Luminance	0.0657 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313E9E #9E9131

analogous

#31749E #313E9E #5A319E

triadic

#313E9E #9E313E #3E9E31

tetradic

#313E9E #9E3174 #9E9131 #319E5A

square

#313E9E #9E3174 #9E9131 #319E5A

split-complementary

#313E9E #9E5A31 #749E31

monochromatic

#141941 #232C6F #313E9E #4656C6 #7580D4

Accessibility & contrast

On white

9.08

#313E9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#313E9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313E9E

9.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313E9E	#FFFFFF	#000000	##FFFFFF
##313E9E	1.00	9.08	2.31	9.08
#FFFFFF	9.08	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA1

Deuteranopia (green-blind)

#00449C

Tritanopia (blue-blind)

#005668

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #313e9e;
/* rgb */ color: rgb(49, 62, 158);
/* oklch */ color: oklch(41.4% 0.155 271.9);

Tailwind

colors: {
  custom: {
    50: '#7773bb',
    500: '#313e9e',
    950: '#000000',
  },
}

SCSS

$custom: #313e9e;
$custom-light: #7773bb;
$custom-dark: #000000;

JSON

{
  "hex": "#313e9e",
  "rgb": {
    "r": 49,
    "g": 62,
    "b": 158
  },
  "hsl": {
    "h": 232.844,
    "s": 52.657,
    "l": 40.588
  },
  "oklch": {
    "l": 0.41425,
    "c": 0.15524,
    "h": 271.9
  },
  "luminance": 0.06567
}

Semantic roles & 50–950 ramp

primary

#313E9E

secondary

#BCB36E

accent

#CB4CDC

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #313E9E

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

Preview Lab → · Contrast checker → · Palette generator →