#313E8A#313E8A

#313E8A is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.8% C 0.127 H 272.1°. Best body text is #FFFFFF at 9.60:1 contrast (WCAG AA passes).

Color values

HEX	#313E8A
RGB	rgb(49, 62, 138)
HSL	hsl(231, 48%, 37%)
HSV	hsv(231, 64%, 54%)
CMYK	cmyk(64.5%, 55.1%, 0%, 45.9%)
CIE-LAB	lab(29.24, 20.17, -44.11)
CIE-LCH	lch(29.24, 48.50, 294.57°)
OKLab	oklab(39.77% 0.0046 -0.1266)
OKLCH	oklch(39.77% 0.127 272.1)
XYZ	xyz(7.5752, 5.9326, 24.7857)
Luminance	0.0593 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313E8A #8A7D31

analogous

#316B8A #313E8A #51318A

triadic

#313E8A #8A313E #3E8A31

tetradic

#313E8A #8A316B #8A7D31 #318A51

square

#313E8A #8A316B #8A7D31 #318A51

split-complementary

#313E8A #8A5131 #6B8A31

monochromatic

#111530 #212A5D #313E8A #4152B7 #6B79CA

Accessibility & contrast

On white

9.60

#313E8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#313E8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313E8A

9.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313E8A	#FFFFFF	#000000	##FFFFFF
##313E8A	1.00	9.60	2.19	9.60
#FFFFFF	9.60	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B498D

Deuteranopia (green-blind)

#004188

Tritanopia (blue-blind)

#00505D

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #313e8a;
/* rgb */ color: rgb(49, 62, 138);
/* oklch */ color: oklch(39.8% 0.127 272.1);

Tailwind

colors: {
  custom: {
    50: '#7373ad',
    500: '#313e8a',
    950: '#000000',
  },
}

SCSS

$custom: #313e8a;
$custom-light: #7373ad;
$custom-dark: #000000;

JSON

{
  "hex": "#313e8a",
  "rgb": {
    "r": 49,
    "g": 62,
    "b": 138
  },
  "hsl": {
    "h": 231.236,
    "s": 47.594,
    "l": 36.667
  },
  "oklch": {
    "l": 0.39773,
    "c": 0.12668,
    "h": 272.1
  },
  "luminance": 0.05933
}

Semantic roles & 50–950 ramp

primary

#313E8A

secondary

#B2A765

accent

#C451D7

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#090810

muted

#7B7B7F

Preview Lab

Preview with #313E8A

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

Preview Lab → · Contrast checker → · Palette generator →