#313DAD#313DAD

#313DAD is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.6% C 0.177 H 271.7°. Best body text is #FFFFFF at 8.74:1 contrast (WCAG AA passes).

Color values

HEX	#313DAD
RGB	rgb(49, 61, 173)
HSL	hsl(234, 56%, 44%)
HSV	hsv(234, 72%, 68%)
CMYK	cmyk(71.7%, 64.7%, 0%, 32.2%)
CIE-LAB	lab(31.82, 33.60, -61.18)
CIE-LCH	lch(31.82, 69.80, 298.78°)
OKLab	oklab(42.58% 0.0053 -0.1767)
OKLCH	oklch(42.58% 0.177 271.7)
XYZ	xyz(10.4756, 7.0065, 40.3274)
Luminance	0.0701 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.04

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313DAD #ADA131

analogous

#317BAD #313DAD #6331AD

triadic

#313DAD #AD313D #3DAD31

tetradic

#313DAD #AD317B #ADA131 #31AD63

square

#313DAD #AD317B #ADA131 #31AD63

split-complementary

#313DAD #AD6331 #7BAD31

monochromatic

#161B4E #232C7D #313DAD #4E5BCD #7E87DA

Accessibility & contrast

On white

8.74

#313DAD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#313DAD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313DAD

8.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313DAD	#FFFFFF	#000000	##FFFFFF
##313DAD	1.00	8.74	2.40	8.74
#FFFFFF	8.74	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B1

Deuteranopia (green-blind)

#0045AB

Tritanopia (blue-blind)

#005A6F

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #313dad;
/* rgb */ color: rgb(49, 61, 173);
/* oklch */ color: oklch(42.6% 0.177 271.7);

Tailwind

colors: {
  custom: {
    50: '#7b72c6',
    500: '#313dad',
    950: '#000000',
  },
}

SCSS

$custom: #313dad;
$custom-light: #7b72c6;
$custom-dark: #000000;

JSON

{
  "hex": "#313dad",
  "rgb": {
    "r": 49,
    "g": 61,
    "b": 173
  },
  "hsl": {
    "h": 234.194,
    "s": 55.856,
    "l": 43.529
  },
  "oklch": {
    "l": 0.42575,
    "c": 0.17681,
    "h": 271.7
  },
  "luminance": 0.07008
}

Semantic roles & 50–950 ramp

primary

#313DAD

secondary

#C3BC77

accent

#D149DF

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #313DAD

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

Preview Lab → · Contrast checker → · Palette generator →