#313C9C#313C9C

#313C9C is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.9% C 0.155 H 272.5°. Best body text is #FFFFFF at 9.30:1 contrast (WCAG AA passes).

Color values

HEX	#313C9C
RGB	rgb(49, 60, 156)
HSL	hsl(234, 52%, 40%)
HSV	hsv(234, 69%, 61%)
CMYK	cmyk(68.6%, 61.5%, 0%, 38.8%)
CIE-LAB	lab(30.12, 28.10, -53.72)
CIE-LCH	lch(30.12, 60.63, 297.62°)
OKLab	oklab(40.87% 0.0068 -0.1549)
OKLCH	oklch(40.87% 0.155 272.5)
XYZ	xyz(8.8812, 6.2842, 32.1910)
Luminance	0.0629 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313C9C #9C9131

analogous

#31719C #313C9C #5C319C

triadic

#313C9C #9C313C #3C9C31

tetradic

#313C9C #9C3171 #9C9131 #319C5C

square

#313C9C #9C3171 #9C9131 #319C5C

split-complementary

#313C9C #9C5C31 #719C31

monochromatic

#14183F #222A6D #313C9C #4553C5 #747ED3

Accessibility & contrast

On white

9.30

#313C9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#313C9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313C9C

9.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313C9C	#FFFFFF	#000000	##FFFFFF
##313C9C	1.00	9.30	2.26	9.30
#FFFFFF	9.30	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004C9F

Deuteranopia (green-blind)

#00429A

Tritanopia (blue-blind)

#005466

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #313c9c;
/* rgb */ color: rgb(49, 60, 156);
/* oklch */ color: oklch(40.9% 0.155 272.5);

Tailwind

colors: {
  custom: {
    50: '#7771ba',
    500: '#313c9c',
    950: '#000000',
  },
}

SCSS

$custom: #313c9c;
$custom-light: #7771ba;
$custom-dark: #000000;

JSON

{
  "hex": "#313c9c",
  "rgb": {
    "r": 49,
    "g": 60,
    "b": 156
  },
  "hsl": {
    "h": 233.832,
    "s": 52.195,
    "l": 40.196
  },
  "oklch": {
    "l": 0.40871,
    "c": 0.15502,
    "h": 272.5
  },
  "luminance": 0.06285
}

Semantic roles & 50–950 ramp

primary

#313C9C

secondary

#BBB36D

accent

#CD4CDC

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #313C9C

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

Preview Lab → · Contrast checker → · Palette generator →