#313B85#313B85

#313B85 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.8% C 0.123 H 273.4°. Best body text is #FFFFFF at 10.02:1 contrast (WCAG AA passes).

Color values

HEX	#313B85
RGB	rgb(49, 59, 133)
HSL	hsl(233, 46%, 36%)
HSV	hsv(233, 63%, 52%)
CMYK	cmyk(63.2%, 55.6%, 0%, 47.8%)
CIE-LAB	lab(28.04, 20.36, -42.95)
CIE-LCH	lch(28.04, 47.53, 295.37°)
OKLab	oklab(38.76% 0.0074 -0.1232)
OKLCH	oklch(38.76% 0.123 273.4)
XYZ	xyz(7.0628, 5.4738, 22.8701)
Luminance	0.0547 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313B85 #857B31

analogous

#316585 #313B85 #513185

triadic

#313B85 #85313B #3B8531

tetradic

#313B85 #853165 #857B31 #318551

square

#313B85 #853165 #857B31 #318551

split-complementary

#313B85 #855131 #658531

monochromatic

#10132C #212758 #313B85 #414FB2 #6974C8

Accessibility & contrast

On white

10.02

#313B85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#313B85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313B85

10.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313B85	#FFFFFF	#000000	##FFFFFF
##313B85	1.00	10.02	2.09	10.02
#FFFFFF	10.02	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#094688

Deuteranopia (green-blind)

#003F83

Tritanopia (blue-blind)

#004C5A

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #313b85;
/* rgb */ color: rgb(49, 59, 133);
/* oklch */ color: oklch(38.8% 0.123 273.4);

Tailwind

colors: {
  custom: {
    50: '#7270a9',
    500: '#313b85',
    950: '#000000',
  },
}

SCSS

$custom: #313b85;
$custom-light: #7270a9;
$custom-dark: #000000;

JSON

{
  "hex": "#313b85",
  "rgb": {
    "r": 49,
    "g": 59,
    "b": 133
  },
  "hsl": {
    "h": 232.857,
    "s": 46.154,
    "l": 35.686
  },
  "oklch": {
    "l": 0.38756,
    "c": 0.12343,
    "h": 273.4
  },
  "luminance": 0.05474
}

Semantic roles & 50–950 ramp

primary

#313B85

secondary

#AFA663

accent

#C652D6

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #313B85

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

Preview Lab → · Contrast checker → · Palette generator →