#313B5F#313B5F

#313B5F is a dark, moderate blue. Relative luminance 0.046; OKLCH L 36.1% C 0.064 H 271.1°. Best body text is #FFFFFF at 10.93:1 contrast (WCAG AA passes).

Color values

HEX	#313B5F
RGB	rgb(49, 59, 95)
HSL	hsl(227, 32%, 28%)
HSV	hsv(227, 48%, 37%)
CMYK	cmyk(48.4%, 37.9%, 0%, 62.7%)
CIE-LAB	lab(25.58, 6.79, -22.72)
CIE-LCH	lch(25.58, 23.71, 286.64°)
OKLab	oklab(36.09% 0.0013 -0.0639)
OKLCH	oklch(36.09% 0.064 271.1)
XYZ	xyz(4.8955, 4.6068, 11.4555)
Luminance	0.0461 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313B5F #5F5531

analogous

#31525F #313B5F #3E315F

triadic

#313B5F #5F313B #3B5F31

tetradic

#313B5F #5F3152 #5F5531 #315F3E

square

#313B5F #5F3152 #5F5531 #315F3E

split-complementary

#313B5F #5F3E31 #525F31

monochromatic

#0A0D14 #1C2237 #313B5F #465487 #5E6FAC

Accessibility & contrast

On white

10.93

#313B5F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#313B5F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313B5F

10.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313B5F	#FFFFFF	#000000	##FFFFFF
##313B5F	1.00	10.93	1.92	10.93
#FFFFFF	10.93	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E3F60

Deuteranopia (green-blind)

#2A3B5E

Tritanopia (blue-blind)

#204248

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #313b5f;
/* rgb */ color: rgb(49, 59, 95);
/* oklch */ color: oklch(36.1% 0.064 271.1);

Tailwind

colors: {
  custom: {
    50: '#6c708c',
    500: '#313b5f',
    950: '#000000',
  },
}

SCSS

$custom: #313b5f;
$custom-light: #6c708c;
$custom-dark: #000000;

JSON

{
  "hex": "#313b5f",
  "rgb": {
    "r": 49,
    "g": 59,
    "b": 95
  },
  "hsl": {
    "h": 226.957,
    "s": 31.944,
    "l": 28.235
  },
  "oklch": {
    "l": 0.36091,
    "c": 0.06391,
    "h": 271.1
  },
  "luminance": 0.04607
}

Semantic roles & 50–950 ramp

primary

#313B5F

secondary

#90855C

accent

#B160C8

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#07070C

muted

#7A7A7D

Preview Lab

Preview with #313B5F

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

Preview Lab → · Contrast checker → · Palette generator →