#313C69#313C69

#313C69 is a dark, moderate blue. Relative luminance 0.049; OKLCH L 37.0% C 0.079 H 271.7°. Best body text is #FFFFFF at 10.60:1 contrast (WCAG AA passes).

Color values

HEX	#313C69
RGB	rgb(49, 60, 105)
HSL	hsl(228, 36%, 30%)
HSV	hsv(228, 53%, 41%)
CMYK	cmyk(53.3%, 42.9%, 0%, 58.8%)
CIE-LAB	lab(26.46, 9.57, -27.79)
CIE-LCH	lch(26.46, 29.39, 289.00°)
OKLab	oklab(36.95% 0.0024 -0.0787)
OKLCH	oklch(36.95% 0.079 271.7)
XYZ	xyz(5.4315, 4.9043, 14.0223)
Luminance	0.0491 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313C69 #695E31

analogous

#315869 #313C69 #423169

triadic

#313C69 #69313C #3C6931

tetradic

#313C69 #693158 #695E31 #316942

square

#313C69 #693158 #695E31 #316942

split-complementary

#313C69 #694231 #586931

monochromatic

#0A0C16 #1E243F #313C69 #445493 #6070B5

Accessibility & contrast

On white

10.60

#313C69 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#313C69 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313C69

10.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313C69	#FFFFFF	#000000	##FFFFFF
##313C69	1.00	10.60	1.98	10.60
#FFFFFF	10.60	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A416B

Deuteranopia (green-blind)

#243C68

Tritanopia (blue-blind)

#19464D

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #313c69;
/* rgb */ color: rgb(49, 60, 105);
/* oklch */ color: oklch(37.0% 0.079 271.7);

Tailwind

colors: {
  custom: {
    50: '#6d7194',
    500: '#313c69',
    950: '#000000',
  },
}

SCSS

$custom: #313c69;
$custom-light: #6d7194;
$custom-dark: #000000;

JSON

{
  "hex": "#313c69",
  "rgb": {
    "r": 49,
    "g": 60,
    "b": 105
  },
  "hsl": {
    "h": 228.214,
    "s": 36.364,
    "l": 30.196
  },
  "oklch": {
    "l": 0.36952,
    "c": 0.07872,
    "h": 271.7
  },
  "luminance": 0.04905
}

Semantic roles & 50–950 ramp

primary

#313C69

secondary

#9A8E5C

accent

#B65BCC

background

#F6F6F9

surface

#ECECF1

border

#C7C7CB

text

#07070D

muted

#7A7A7E

Preview Lab

Preview with #313C69

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

Preview Lab → · Contrast checker → · Palette generator →