#313C97#313C97

#313C97 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.4% C 0.148 H 272.7°. Best body text is #FFFFFF at 9.44:1 contrast (WCAG AA passes).

Color values

HEX	#313C97
RGB	rgb(49, 60, 151)
HSL	hsl(234, 51%, 39%)
HSV	hsv(234, 68%, 59%)
CMYK	cmyk(67.5%, 60.3%, 0%, 40.8%)
CIE-LAB	lab(29.71, 26.28, -51.34)
CIE-LCH	lch(29.71, 57.68, 297.11°)
OKLab	oklab(40.44% 0.0069 -0.1479)
OKLCH	oklch(40.44% 0.148 272.7)
XYZ	xyz(8.4665, 6.1183, 30.0069)
Luminance	0.0612 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313C97 #978C31

analogous

#316F97 #313C97 #593197

triadic

#313C97 #97313C #3C9731

tetradic

#313C97 #97316F #978C31 #319759

square

#313C97 #97316F #978C31 #319759

split-complementary

#313C97 #975931 #6F9731

monochromatic

#13173B #222A69 #313C97 #4351C2 #717CD1

Accessibility & contrast

On white

9.44

#313C97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#313C97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313C97

9.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313C97	#FFFFFF	#000000	##FFFFFF
##313C97	1.00	9.44	2.22	9.44
#FFFFFF	9.44	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B9A

Deuteranopia (green-blind)

#004195

Tritanopia (blue-blind)

#005263

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #313c97;
/* rgb */ color: rgb(49, 60, 151);
/* oklch */ color: oklch(40.4% 0.148 272.7);

Tailwind

colors: {
  custom: {
    50: '#7671b6',
    500: '#313c97',
    950: '#000000',
  },
}

SCSS

$custom: #313c97;
$custom-light: #7671b6;
$custom-dark: #000000;

JSON

{
  "hex": "#313c97",
  "rgb": {
    "r": 49,
    "g": 60,
    "b": 151
  },
  "hsl": {
    "h": 233.529,
    "s": 51,
    "l": 39.216
  },
  "oklch": {
    "l": 0.40439,
    "c": 0.14804,
    "h": 272.7
  },
  "luminance": 0.06119
}

Semantic roles & 50–950 ramp

primary

#313C97

secondary

#B9B06B

accent

#CB4DDA

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #313C97

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

Preview Lab → · Contrast checker → · Palette generator →