#313E71#313E71

#313E71 is a dark, moderate blue. Relative luminance 0.053; OKLCH L 37.9% C 0.089 H 270.9°. Best body text is #FFFFFF at 10.20:1 contrast (WCAG AA passes).

Color values

HEX	#313E71
RGB	rgb(49, 62, 113)
HSL	hsl(228, 40%, 32%)
HSV	hsv(228, 57%, 44%)
CMYK	cmyk(56.6%, 45.1%, 0%, 55.7%)
CIE-LAB	lab(27.55, 11.04, -31.17)
CIE-LCH	lch(27.55, 33.07, 289.51°)
OKLab	oklab(37.94% 0.0014 -0.0886)
OKLCH	oklch(37.94% 0.089 270.9)
XYZ	xyz(5.9689, 5.2901, 16.3261)
Luminance	0.0529 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313E71 #716431

analogous

#315E71 #313E71 #443171

triadic

#313E71 #71313E #3E7131

tetradic

#313E71 #71315E #716431 #317144

square

#313E71 #71315E #716431 #317144

split-complementary

#313E71 #714431 #5E7131

monochromatic

#0C0F1C #1E2746 #313E71 #44559C #6274BB

Accessibility & contrast

On white

10.20

#313E71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#313E71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313E71

10.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313E71	#FFFFFF	#000000	##FFFFFF
##313E71	1.00	10.20	2.06	10.20
#FFFFFF	10.20	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#284473

Deuteranopia (green-blind)

#213E70

Tritanopia (blue-blind)

#104952

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #313e71;
/* rgb */ color: rgb(49, 62, 113);
/* oklch */ color: oklch(37.9% 0.089 270.9);

Tailwind

colors: {
  custom: {
    50: '#6e739a',
    500: '#313e71',
    950: '#000000',
  },
}

SCSS

$custom: #313e71;
$custom-light: #6e739a;
$custom-dark: #000000;

JSON

{
  "hex": "#313e71",
  "rgb": {
    "r": 49,
    "g": 62,
    "b": 113
  },
  "hsl": {
    "h": 227.813,
    "s": 39.506,
    "l": 31.765
  },
  "oklch": {
    "l": 0.37942,
    "c": 0.08857,
    "h": 270.9
  },
  "luminance": 0.0529
}

Semantic roles & 50–950 ramp

primary

#313E71

secondary

#A2945C

accent

#B758CF

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#07080E

muted

#7A7B7E

Preview Lab

Preview with #313E71

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

Preview Lab → · Contrast checker → · Palette generator →