#313E72#313E72

#313E72 is a dark, moderate blue. Relative luminance 0.053; OKLCH L 38.0% C 0.090 H 271.0°. Best body text is #FFFFFF at 10.18:1 contrast (WCAG AA passes).

Color values

HEX	#313E72
RGB	rgb(49, 62, 114)
HSL	hsl(228, 40%, 32%)
HSV	hsv(228, 57%, 45%)
CMYK	cmyk(57%, 45.6%, 0%, 55.3%)
CIE-LAB	lab(27.61, 11.40, -31.71)
CIE-LCH	lch(27.61, 33.70, 289.78°)
OKLab	oklab(38.01% 0.0016 -0.0901)
OKLCH	oklch(38.01% 0.09 271)
XYZ	xyz(6.0255, 5.3127, 16.6243)
Luminance	0.0531 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313E72 #726531

analogous

#315F72 #313E72 #453172

triadic

#313E72 #72313E #3E7231

tetradic

#313E72 #72315F #726531 #317245

square

#313E72 #72315F #726531 #317245

split-complementary

#313E72 #724531 #5F7231

monochromatic

#0C0F1C #1F2747 #313E72 #43559D #6274BB

Accessibility & contrast

On white

10.18

#313E72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#313E72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313E72

10.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313E72	#FFFFFF	#000000	##FFFFFF
##313E72	1.00	10.18	2.06	10.18
#FFFFFF	10.18	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#284474

Deuteranopia (green-blind)

#203F71

Tritanopia (blue-blind)

#0F4952

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #313e72;
/* rgb */ color: rgb(49, 62, 114);
/* oklch */ color: oklch(38.0% 0.090 271.0);

Tailwind

colors: {
  custom: {
    50: '#6e739b',
    500: '#313e72',
    950: '#000000',
  },
}

SCSS

$custom: #313e72;
$custom-light: #6e739b;
$custom-dark: #000000;

JSON

{
  "hex": "#313e72",
  "rgb": {
    "r": 49,
    "g": 62,
    "b": 114
  },
  "hsl": {
    "h": 228,
    "s": 39.877,
    "l": 31.961
  },
  "oklch": {
    "l": 0.38009,
    "c": 0.09014,
    "h": 271
  },
  "luminance": 0.05313
}

Semantic roles & 50–950 ramp

primary

#313E72

secondary

#A3955C

accent

#B858D0

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#08080E

muted

#7B7B7E

Preview Lab

Preview with #313E72

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

Preview Lab → · Contrast checker → · Palette generator →