#313E9A#313E9A

#313E9A is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.1% C 0.150 H 272.0°. Best body text is #FFFFFF at 9.19:1 contrast (WCAG AA passes).

Color values

HEX	#313E9A
RGB	rgb(49, 62, 154)
HSL	hsl(233, 52%, 40%)
HSV	hsv(233, 68%, 60%)
CMYK	cmyk(68.2%, 59.7%, 0%, 39.6%)
CIE-LAB	lab(30.47, 26.05, -51.93)
CIE-LCH	lch(30.47, 58.10, 296.64°)
OKLab	oklab(41.08% 0.0051 -0.1496)
OKLCH	oklch(41.08% 0.15 272)
XYZ	xyz(8.8200, 6.4305, 31.3420)
Luminance	0.0643 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313E9A #9A8D31

analogous

#31739A #313E9A #58319A

triadic

#313E9A #9A313E #3E9A31

tetradic

#313E9A #9A3173 #9A8D31 #319A58

square

#313E9A #9A3173 #9A8D31 #319A58

split-complementary

#313E9A #9A5831 #739A31

monochromatic

#13193D #222B6C #313E9A #4554C4 #737FD2

Accessibility & contrast

On white

9.19

#313E9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#313E9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313E9A

9.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313E9A	#FFFFFF	#000000	##FFFFFF
##313E9A	1.00	9.19	2.29	9.19
#FFFFFF	9.19	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004D9D

Deuteranopia (green-blind)

#004398

Tritanopia (blue-blind)

#005566

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #313e9a;
/* rgb */ color: rgb(49, 62, 154);
/* oklch */ color: oklch(41.1% 0.150 272.0);

Tailwind

colors: {
  custom: {
    50: '#7673b8',
    500: '#313e9a',
    950: '#000000',
  },
}

SCSS

$custom: #313e9a;
$custom-light: #7673b8;
$custom-dark: #000000;

JSON

{
  "hex": "#313e9a",
  "rgb": {
    "r": 49,
    "g": 62,
    "b": 154
  },
  "hsl": {
    "h": 232.571,
    "s": 51.724,
    "l": 39.804
  },
  "oklch": {
    "l": 0.41083,
    "c": 0.14967,
    "h": 272
  },
  "luminance": 0.06431
}

Semantic roles & 50–950 ramp

primary

#313E9A

secondary

#BAB16C

accent

#CA4DDB

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0811

muted

#7C7B80

Preview Lab

Preview with #313E9A

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

Preview Lab → · Contrast checker → · Palette generator →