#313387#313387

#313387 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.3% C 0.137 H 276.4°. Best body text is #FFFFFF at 10.75:1 contrast (WCAG AA passes).

Color values

HEX	#313387
RGB	rgb(49, 51, 135)
HSL	hsl(239, 47%, 36%)
HSV	hsv(239, 64%, 53%)
CMYK	cmyk(63.7%, 62.2%, 0%, 47.1%)
CIE-LAB	lab(26.07, 26.47, -47.40)
CIE-LCH	lch(26.07, 54.29, 299.18°)
OKLab	oklab(37.34% 0.0154 -0.1364)
OKLCH	oklch(37.34% 0.137 276.4)
XYZ	xyz(6.8222, 4.7694, 23.4780)
Luminance	0.0477 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313387 #878531

analogous

#315E87 #313387 #5A3187

triadic

#313387 #873133 #338731

tetradic

#313387 #87315E #878531 #31875A

square

#313387 #87315E #878531 #31875A

split-complementary

#313387 #875A31 #5E8731

monochromatic

#10112D #21225A #313387 #4144B4 #6A6CC9

Accessibility & contrast

On white

10.75

#313387 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#313387 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313387

10.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313387	#FFFFFF	#000000	##FFFFFF
##313387	1.00	10.75	1.95	10.75
#FFFFFF	10.75	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00418A

Deuteranopia (green-blind)

#003A85

Tritanopia (blue-blind)

#004858

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #313387;
/* rgb */ color: rgb(49, 51, 135);
/* oklch */ color: oklch(37.3% 0.137 276.4);

Tailwind

colors: {
  custom: {
    50: '#736aab',
    500: '#313387',
    950: '#000000',
  },
}

SCSS

$custom: #313387;
$custom-light: #736aab;
$custom-dark: #000000;

JSON

{
  "hex": "#313387",
  "rgb": {
    "r": 49,
    "g": 51,
    "b": 135
  },
  "hsl": {
    "h": 238.605,
    "s": 46.739,
    "l": 36.078
  },
  "oklch": {
    "l": 0.37335,
    "c": 0.13724,
    "h": 276.4
  },
  "luminance": 0.0477
}

Semantic roles & 50–950 ramp

primary

#313387

secondary

#B0AE64

accent

#D351D6

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090610

muted

#7B7A7F

Preview Lab

Preview with #313387

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

Preview Lab → · Contrast checker → · Palette generator →