#313B60#313B60

#313B60 is a dark, moderate blue. Relative luminance 0.046; OKLCH L 36.2% C 0.066 H 271.3°. Best body text is #FFFFFF at 10.91:1 contrast (WCAG AA passes).

Color values

HEX	#313B60
RGB	rgb(49, 59, 96)
HSL	hsl(227, 32%, 28%)
HSV	hsv(227, 49%, 38%)
CMYK	cmyk(49%, 38.5%, 0%, 62.4%)
CIE-LAB	lab(25.64, 7.13, -23.28)
CIE-LCH	lch(25.64, 24.35, 287.03°)
OKLab	oklab(36.15% 0.0015 -0.0655)
OKLCH	oklch(36.15% 0.066 271.3)
XYZ	xyz(4.9412, 4.6251, 11.6964)
Luminance	0.0462 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313B60 #605631

analogous

#315260 #313B60 #3E3160

triadic

#313B60 #60313B #3B6031

tetradic

#313B60 #603152 #605631 #31603E

square

#313B60 #603152 #605631 #31603E

split-complementary

#313B60 #603E31 #526031

monochromatic

#0A0C14 #1C2237 #313B60 #465489 #5E6FAD

Accessibility & contrast

On white

10.91

#313B60 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#313B60 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313B60

10.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313B60	#FFFFFF	#000000	##FFFFFF
##313B60	1.00	10.91	1.93	10.91
#FFFFFF	10.91	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D3F61

Deuteranopia (green-blind)

#293B5F

Tritanopia (blue-blind)

#204349

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #313b60;
/* rgb */ color: rgb(49, 59, 96);
/* oklch */ color: oklch(36.2% 0.066 271.3);

Tailwind

colors: {
  custom: {
    50: '#6c708d',
    500: '#313b60',
    950: '#000000',
  },
}

SCSS

$custom: #313b60;
$custom-light: #6c708d;
$custom-dark: #000000;

JSON

{
  "hex": "#313b60",
  "rgb": {
    "r": 49,
    "g": 59,
    "b": 96
  },
  "hsl": {
    "h": 227.234,
    "s": 32.414,
    "l": 28.431
  },
  "oklch": {
    "l": 0.36151,
    "c": 0.06555,
    "h": 271.3
  },
  "luminance": 0.04625
}

Semantic roles & 50–950 ramp

primary

#313B60

secondary

#91865C

accent

#B25FC9

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#07070C

muted

#7A7A7D

Preview Lab

Preview with #313B60

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

Preview Lab → · Contrast checker → · Palette generator →