#313B65#313B65

#313B65 is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.5% C 0.074 H 272.2°. Best body text is #FFFFFF at 10.80:1 contrast (WCAG AA passes).

Color values

HEX	#313B65
RGB	rgb(49, 59, 101)
HSL	hsl(228, 35%, 29%)
HSV	hsv(228, 51%, 40%)
CMYK	cmyk(51.5%, 41.6%, 0%, 60.4%)
CIE-LAB	lab(25.92, 8.85, -26.07)
CIE-LCH	lch(25.92, 27.53, 288.76°)
OKLab	oklab(36.46% 0.0028 -0.0737)
OKLCH	oklch(36.46% 0.074 272.2)
XYZ	xyz(5.1788, 4.7202, 12.9476)
Luminance	0.0472 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313B65 #655B31

analogous

#315565 #313B65 #413165

triadic

#313B65 #65313B #3B6531

tetradic

#313B65 #653155 #655B31 #316541

square

#313B65 #653155 #655B31 #316541

split-complementary

#313B65 #654131 #556531

monochromatic

#0A0C15 #1D233C #313B65 #45538E #5F6FB1

Accessibility & contrast

On white

10.80

#313B65 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#313B65 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313B65

10.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313B65	#FFFFFF	#000000	##FFFFFF
##313B65	1.00	10.80	1.94	10.80
#FFFFFF	10.80	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B4067

Deuteranopia (green-blind)

#263B64

Tritanopia (blue-blind)

#1C444B

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #313b65;
/* rgb */ color: rgb(49, 59, 101);
/* oklch */ color: oklch(36.5% 0.074 272.2);

Tailwind

colors: {
  custom: {
    50: '#6d7091',
    500: '#313b65',
    950: '#000000',
  },
}

SCSS

$custom: #313b65;
$custom-light: #6d7091;
$custom-dark: #000000;

JSON

{
  "hex": "#313b65",
  "rgb": {
    "r": 49,
    "g": 59,
    "b": 101
  },
  "hsl": {
    "h": 228.462,
    "s": 34.667,
    "l": 29.412
  },
  "oklch": {
    "l": 0.36462,
    "c": 0.07371,
    "h": 272.2
  },
  "luminance": 0.0472
}

Semantic roles & 50–950 ramp

primary

#313B65

secondary

#968B5C

accent

#B65DCB

background

#F6F6F8

surface

#ECECF0

border

#C7C7CB

text

#07070C

muted

#7A7A7D

Preview Lab

Preview with #313B65

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

Preview Lab → · Contrast checker → · Palette generator →