#313D9F#313D9F

#313D9F is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.3% C 0.158 H 272.1°. Best body text is #FFFFFF at 9.14:1 contrast (WCAG AA passes).

Color values

HEX	#313D9F
RGB	rgb(49, 61, 159)
HSL	hsl(233, 53%, 41%)
HSV	hsv(233, 69%, 62%)
CMYK	cmyk(69.2%, 61.6%, 0%, 37.6%)
CIE-LAB	lab(30.62, 28.54, -54.72)
CIE-LCH	lch(30.62, 61.71, 297.54°)
OKLab	oklab(41.32% 0.0059 -0.1578)
OKLCH	oklch(41.32% 0.158 272.1)
XYZ	xyz(9.1913, 6.4928, 33.5630)
Luminance	0.0649 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313D9F #9F9331

analogous

#31749F #313D9F #5C319F

triadic

#313D9F #9F313D #3D9F31

tetradic

#313D9F #9F3174 #9F9331 #319F5C

square

#313D9F #9F3174 #9F9331 #319F5C

split-complementary

#313D9F #9F5C31 #749F31

monochromatic

#141941 #232B70 #313D9F #4755C6 #7680D5

Accessibility & contrast

On white

9.14

#313D9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#313D9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313D9F

9.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313D9F	#FFFFFF	#000000	##FFFFFF
##313D9F	1.00	9.14	2.30	9.14
#FFFFFF	9.14	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA2

Deuteranopia (green-blind)

#00439D

Tritanopia (blue-blind)

#005668

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #313d9f;
/* rgb */ color: rgb(49, 61, 159);
/* oklch */ color: oklch(41.3% 0.158 272.1);

Tailwind

colors: {
  custom: {
    50: '#7772bc',
    500: '#313d9f',
    950: '#000000',
  },
}

SCSS

$custom: #313d9f;
$custom-light: #7772bc;
$custom-dark: #000000;

JSON

{
  "hex": "#313d9f",
  "rgb": {
    "r": 49,
    "g": 61,
    "b": 159
  },
  "hsl": {
    "h": 233.455,
    "s": 52.885,
    "l": 40.784
  },
  "oklch": {
    "l": 0.41321,
    "c": 0.1579,
    "h": 272.1
  },
  "luminance": 0.06494
}

Semantic roles & 50–950 ramp

primary

#313D9F

secondary

#BDB46F

accent

#CD4CDC

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #313D9F

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

Preview Lab → · Contrast checker → · Palette generator →