#313E75#313E75

#313E75 is a dark, moderate blue. Relative luminance 0.054; OKLCH L 38.2% C 0.095 H 271.3°. Best body text is #FFFFFF at 10.11:1 contrast (WCAG AA passes).

Color values

HEX	#313E75
RGB	rgb(49, 62, 117)
HSL	hsl(229, 41%, 33%)
HSV	hsv(229, 58%, 46%)
CMYK	cmyk(58.1%, 47%, 0%, 54.1%)
CIE-LAB	lab(27.80, 12.49, -33.31)
CIE-LCH	lch(27.80, 35.57, 290.55°)
OKLab	oklab(38.21% 0.0021 -0.0948)
OKLCH	oklch(38.21% 0.095 271.3)
XYZ	xyz(6.1991, 5.3821, 17.5384)
Luminance	0.0538 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313E75 #756831

analogous

#316075 #313E75 #463175

triadic

#313E75 #75313E #3E7531

tetradic

#313E75 #753160 #756831 #317546

square

#313E75 #753160 #756831 #317546

split-complementary

#313E75 #754631 #607531

monochromatic

#0D101F #1F274A #313E75 #4355A0 #6374BE

Accessibility & contrast

On white

10.11

#313E75 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#313E75 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313E75

10.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313E75	#FFFFFF	#000000	##FFFFFF
##313E75	1.00	10.11	2.08	10.11
#FFFFFF	10.11	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#264577

Deuteranopia (green-blind)

#1D3F74

Tritanopia (blue-blind)

#0A4A53

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #313e75;
/* rgb */ color: rgb(49, 62, 117);
/* oklch */ color: oklch(38.2% 0.095 271.3);

Tailwind

colors: {
  custom: {
    50: '#6f739d',
    500: '#313e75',
    950: '#000000',
  },
}

SCSS

$custom: #313e75;
$custom-light: #6f739d;
$custom-dark: #000000;

JSON

{
  "hex": "#313e75",
  "rgb": {
    "r": 49,
    "g": 62,
    "b": 117
  },
  "hsl": {
    "h": 228.529,
    "s": 40.964,
    "l": 32.549
  },
  "oklch": {
    "l": 0.38215,
    "c": 0.09484,
    "h": 271.3
  },
  "luminance": 0.05383
}

Semantic roles & 50–950 ramp

primary

#313E75

secondary

#A5975D

accent

#BA57D1

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#08080E

muted

#7B7B7E

Preview Lab

Preview with #313E75

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

Preview Lab → · Contrast checker → · Palette generator →