#313D9C#313D9C

#313D9C is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.1% C 0.154 H 272.2°. Best body text is #FFFFFF at 9.22:1 contrast (WCAG AA passes).

Color values

HEX	#313D9C
RGB	rgb(49, 61, 156)
HSL	hsl(233, 52%, 40%)
HSV	hsv(233, 69%, 61%)
CMYK	cmyk(68.6%, 60.9%, 0%, 38.8%)
CIE-LAB	lab(30.38, 27.44, -53.30)
CIE-LCH	lch(30.38, 59.95, 297.24°)
OKLab	oklab(41.06% 0.006 -0.1536)
OKLCH	oklch(41.06% 0.154 272.2)
XYZ	xyz(8.9341, 6.3899, 32.2086)
Luminance	0.0639 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313D9C #9C9031

analogous

#31729C #313D9C #5A319C

triadic

#313D9C #9C313D #3D9C31

tetradic

#313D9C #9C3172 #9C9031 #319C5A

square

#313D9C #9C3172 #9C9031 #319C5A

split-complementary

#313D9C #9C5A31 #729C31

monochromatic

#14193F #222B6D #313D9C #4554C5 #747FD3

Accessibility & contrast

On white

9.22

#313D9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#313D9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313D9C

9.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313D9C	#FFFFFF	#000000	##FFFFFF
##313D9C	1.00	9.22	2.28	9.22
#FFFFFF	9.22	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004C9F

Deuteranopia (green-blind)

#00439A

Tritanopia (blue-blind)

#005566

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #313d9c;
/* rgb */ color: rgb(49, 61, 156);
/* oklch */ color: oklch(41.1% 0.154 272.2);

Tailwind

colors: {
  custom: {
    50: '#7772ba',
    500: '#313d9c',
    950: '#000000',
  },
}

SCSS

$custom: #313d9c;
$custom-light: #7772ba;
$custom-dark: #000000;

JSON

{
  "hex": "#313d9c",
  "rgb": {
    "r": 49,
    "g": 61,
    "b": 156
  },
  "hsl": {
    "h": 233.271,
    "s": 52.195,
    "l": 40.196
  },
  "oklch": {
    "l": 0.41061,
    "c": 0.15375,
    "h": 272.2
  },
  "luminance": 0.06391
}

Semantic roles & 50–950 ramp

primary

#313D9C

secondary

#BBB36D

accent

#CC4CDC

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #313D9C

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

Preview Lab → · Contrast checker → · Palette generator →