#313B83#313B83

#313B83 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.6% C 0.120 H 273.4°. Best body text is #FFFFFF at 10.08:1 contrast (WCAG AA passes).

Color values

HEX	#313B83
RGB	rgb(49, 59, 131)
HSL	hsl(233, 46%, 35%)
HSV	hsv(233, 63%, 51%)
CMYK	cmyk(62.6%, 55%, 0%, 48.6%)
CIE-LAB	lab(27.90, 19.63, -41.94)
CIE-LCH	lch(27.90, 46.31, 295.08°)
OKLab	oklab(38.6% 0.0072 -0.1202)
OKLCH	oklch(38.6% 0.12 273.4)
XYZ	xyz(6.9260, 5.4190, 22.1493)
Luminance	0.0542 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313B83 #837931

analogous

#316483 #313B83 #503183

triadic

#313B83 #83313B #3B8331

tetradic

#313B83 #833164 #837931 #318350

square

#313B83 #833164 #837931 #318350

split-complementary

#313B83 #835031 #648331

monochromatic

#10132A #202756 #313B83 #424FB0 #6873C6

Accessibility & contrast

On white

10.08

#313B83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#313B83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313B83

10.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313B83	#FFFFFF	#000000	##FFFFFF
##313B83	1.00	10.08	2.08	10.08
#FFFFFF	10.08	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E4686

Deuteranopia (green-blind)

#003E82

Tritanopia (blue-blind)

#004C59

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #313b83;
/* rgb */ color: rgb(49, 59, 131);
/* oklch */ color: oklch(38.6% 0.120 273.4);

Tailwind

colors: {
  custom: {
    50: '#7270a8',
    500: '#313b83',
    950: '#000000',
  },
}

SCSS

$custom: #313b83;
$custom-light: #7270a8;
$custom-dark: #000000;

JSON

{
  "hex": "#313b83",
  "rgb": {
    "r": 49,
    "g": 59,
    "b": 131
  },
  "hsl": {
    "h": 232.683,
    "s": 45.556,
    "l": 35.294
  },
  "oklch": {
    "l": 0.38599,
    "c": 0.12046,
    "h": 273.4
  },
  "luminance": 0.0542
}

Semantic roles & 50–950 ramp

primary

#313B83

secondary

#AEA562

accent

#C553D5

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#08070F

muted

#7B7A7F

Preview Lab

Preview with #313B83

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

Preview Lab → · Contrast checker → · Palette generator →