#313B6F#313B6F

#313B6F is a dark, moderate blue. Relative luminance 0.049; OKLCH L 37.1% C 0.090 H 273.1°. Best body text is #FFFFFF at 10.58:1 contrast (WCAG AA passes).

Color values

HEX	#313B6F
RGB	rgb(49, 59, 111)
HSL	hsl(230, 39%, 31%)
HSV	hsv(230, 56%, 44%)
CMYK	cmyk(55.9%, 46.8%, 0%, 56.5%)
CIE-LAB	lab(26.53, 12.38, -31.52)
CIE-LCH	lch(26.53, 33.87, 291.45°)
OKLab	oklab(37.12% 0.0048 -0.0896)
OKLCH	oklch(37.12% 0.09 273.1)
XYZ	xyz(5.6989, 4.9282, 15.6868)
Luminance	0.0493 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313B6F #6F6531

analogous

#315A6F #313B6F #46316F

triadic

#313B6F #6F313B #3B6F31

tetradic

#313B6F #6F315A #6F6531 #316F46

square

#313B6F #6F315A #6F6531 #316F46

split-complementary

#313B6F #6F4631 #5A6F31

monochromatic

#0C0E1A #1E2445 #313B6F #445299 #616FB9

Accessibility & contrast

On white

10.58

#313B6F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#313B6F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313B6F

10.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313B6F	#FFFFFF	#000000	##FFFFFF
##313B6F	1.00	10.58	1.99	10.58
#FFFFFF	10.58	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#254271

Deuteranopia (green-blind)

#1E3C6E

Tritanopia (blue-blind)

#14464F

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #313b6f;
/* rgb */ color: rgb(49, 59, 111);
/* oklch */ color: oklch(37.1% 0.090 273.1);

Tailwind

colors: {
  custom: {
    50: '#6e7099',
    500: '#313b6f',
    950: '#000000',
  },
}

SCSS

$custom: #313b6f;
$custom-light: #6e7099;
$custom-dark: #000000;

JSON

{
  "hex": "#313b6f",
  "rgb": {
    "r": 49,
    "g": 59,
    "b": 111
  },
  "hsl": {
    "h": 230.323,
    "s": 38.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.37124,
    "c": 0.08974,
    "h": 273.1
  },
  "luminance": 0.04929
}

Semantic roles & 50–950 ramp

primary

#313B6F

secondary

#A0955C

accent

#BC59CF

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #313B6F

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

Preview Lab → · Contrast checker → · Palette generator →