#313F79#313F79

#313F79 is a dark, moderate blue. Relative luminance 0.056; OKLCH L 38.7% C 0.100 H 270.9°. Best body text is #FFFFFF at 9.92:1 contrast (WCAG AA passes).

Color values

HEX	#313F79
RGB	rgb(49, 63, 121)
HSL	hsl(228, 42%, 33%)
HSV	hsv(228, 60%, 47%)
CMYK	cmyk(59.5%, 47.9%, 0%, 52.5%)
CIE-LAB	lab(28.35, 13.25, -34.95)
CIE-LCH	lch(28.35, 37.38, 290.77°)
OKLab	oklab(38.72% 0.0016 -0.0996)
OKLCH	oklch(38.72% 0.1 270.9)
XYZ	xyz(6.4942, 5.5880, 18.8218)
Luminance	0.0559 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313F79 #796B31

analogous

#316379 #313F79 #473179

triadic

#313F79 #79313F #3F7931

tetradic

#313F79 #793163 #796B31 #317947

square

#313F79 #793163 #796B31 #317947

split-complementary

#313F79 #794731 #637931

monochromatic

#0E1222 #1F284D #313F79 #4356A5 #6476C0

Accessibility & contrast

On white

9.92

#313F79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#313F79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313F79

9.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313F79	#FFFFFF	#000000	##FFFFFF
##313F79	1.00	9.92	2.12	9.92
#FFFFFF	9.92	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#24467B

Deuteranopia (green-blind)

#1A4078

Tritanopia (blue-blind)

#024C56

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #313f79;
/* rgb */ color: rgb(49, 63, 121);
/* oklch */ color: oklch(38.7% 0.100 270.9);

Tailwind

colors: {
  custom: {
    50: '#7073a0',
    500: '#313f79',
    950: '#000000',
  },
}

SCSS

$custom: #313f79;
$custom-light: #7073a0;
$custom-dark: #000000;

JSON

{
  "hex": "#313f79",
  "rgb": {
    "r": 49,
    "g": 63,
    "b": 121
  },
  "hsl": {
    "h": 228.333,
    "s": 42.353,
    "l": 33.333
  },
  "oklch": {
    "l": 0.38719,
    "c": 0.09964,
    "h": 270.9
  },
  "luminance": 0.05588
}

Semantic roles & 50–950 ramp

primary

#313F79

secondary

#A8995E

accent

#BA56D2

background

#F7F6F9

surface

#EDECF2

border

#C8C7CC

text

#08080F

muted

#7B7B7E

Preview Lab

Preview with #313F79

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

Preview Lab → · Contrast checker → · Palette generator →