#313B97#313B97

#313B97 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.2% C 0.149 H 273.0°. Best body text is #FFFFFF at 9.53:1 contrast (WCAG AA passes).

Color values

HEX	#313B97
RGB	rgb(49, 59, 151)
HSL	hsl(234, 51%, 39%)
HSV	hsv(234, 68%, 59%)
CMYK	cmyk(67.5%, 60.9%, 0%, 40.8%)
CIE-LAB	lab(29.45, 26.94, -51.77)
CIE-LCH	lch(29.45, 58.36, 297.50°)
OKLab	oklab(40.25% 0.0077 -0.1491)
OKLCH	oklch(40.25% 0.149 273)
XYZ	xyz(8.4146, 6.0145, 29.9896)
Luminance	0.0602 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313B97 #978D31

analogous

#316E97 #313B97 #5A3197

triadic

#313B97 #97313B #3B9731

tetradic

#313B97 #97316E #978D31 #31975A

square

#313B97 #97316E #978D31 #31975A

split-complementary

#313B97 #975A31 #6E9731

monochromatic

#13173B #222969 #313B97 #4350C2 #717BD1

Accessibility & contrast

On white

9.53

#313B97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#313B97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313B97

9.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313B97	#FFFFFF	#000000	##FFFFFF
##313B97	1.00	9.53	2.20	9.53
#FFFFFF	9.53	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9A

Deuteranopia (green-blind)

#004195

Tritanopia (blue-blind)

#005263

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #313b97;
/* rgb */ color: rgb(49, 59, 151);
/* oklch */ color: oklch(40.2% 0.149 273.0);

Tailwind

colors: {
  custom: {
    50: '#7671b6',
    500: '#313b97',
    950: '#000000',
  },
}

SCSS

$custom: #313b97;
$custom-light: #7671b6;
$custom-dark: #000000;

JSON

{
  "hex": "#313b97",
  "rgb": {
    "r": 49,
    "g": 59,
    "b": 151
  },
  "hsl": {
    "h": 234.118,
    "s": 51,
    "l": 39.216
  },
  "oklch": {
    "l": 0.40247,
    "c": 0.14934,
    "h": 273
  },
  "luminance": 0.06015
}

Semantic roles & 50–950 ramp

primary

#313B97

secondary

#B9B16B

accent

#CD4DDA

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #313B97

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

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