#313B68#313B68

#313B68 is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.7% C 0.079 H 272.5°. Best body text is #FFFFFF at 10.74:1 contrast (WCAG AA passes).

Color values

HEX	#313B68
RGB	rgb(49, 59, 104)
HSL	hsl(229, 36%, 30%)
HSV	hsv(229, 53%, 41%)
CMYK	cmyk(52.9%, 43.3%, 0%, 59.2%)
CIE-LAB	lab(26.10, 9.90, -27.72)
CIE-LCH	lch(26.10, 29.44, 289.66°)
OKLab	oklab(36.66% 0.0035 -0.0785)
OKLCH	oklch(36.66% 0.079 272.5)
XYZ	xyz(5.3285, 4.7800, 13.7359)
Luminance	0.0478 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313B68 #685E31

analogous

#315668 #313B68 #433168

triadic

#313B68 #68313B #3B6831

tetradic

#313B68 #683156 #685E31 #316843

square

#313B68 #683156 #685E31 #316843

split-complementary

#313B68 #684331 #566831

monochromatic

#0A0C15 #1D233E #313B68 #455392 #606FB4

Accessibility & contrast

On white

10.74

#313B68 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#313B68 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313B68

10.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313B68	#FFFFFF	#000000	##FFFFFF
##313B68	1.00	10.74	1.96	10.74
#FFFFFF	10.74	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#29406A

Deuteranopia (green-blind)

#243C67

Tritanopia (blue-blind)

#1A454C

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #313b68;
/* rgb */ color: rgb(49, 59, 104);
/* oklch */ color: oklch(36.7% 0.079 272.5);

Tailwind

colors: {
  custom: {
    50: '#6d7093',
    500: '#313b68',
    950: '#000000',
  },
}

SCSS

$custom: #313b68;
$custom-light: #6d7093;
$custom-dark: #000000;

JSON

{
  "hex": "#313b68",
  "rgb": {
    "r": 49,
    "g": 59,
    "b": 104
  },
  "hsl": {
    "h": 229.091,
    "s": 35.948,
    "l": 30
  },
  "oklch": {
    "l": 0.36655,
    "c": 0.07856,
    "h": 272.5
  },
  "luminance": 0.0478
}

Semantic roles & 50–950 ramp

primary

#313B68

secondary

#998E5C

accent

#B85CCC

background

#F6F6F9

surface

#ECECF1

border

#C7C7CB

text

#07070D

muted

#7A7A7E

Preview Lab

Preview with #313B68

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

Preview Lab → · Contrast checker → · Palette generator →