#313BAA#313BAA

#313BAA is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.9% C 0.175 H 272.3°. Best body text is #FFFFFF at 8.99:1 contrast (WCAG AA passes).

Color values

HEX	#313BAA
RGB	rgb(49, 59, 170)
HSL	hsl(235, 55%, 43%)
HSV	hsv(235, 71%, 67%)
CMYK	cmyk(71.2%, 65.3%, 0%, 33.3%)
CIE-LAB	lab(31.07, 33.80, -60.61)
CIE-LCH	lch(31.07, 69.40, 299.15°)
OKLab	oklab(41.94% 0.0069 -0.1751)
OKLCH	oklch(41.94% 0.175 272.3)
XYZ	xyz(10.0838, 6.6822, 38.7808)
Luminance	0.0668 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.24

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313BAA #AAA031

analogous

#3178AA #313BAA #6331AA

triadic

#313BAA #AA313B #3BAA31

tetradic

#313BAA #AA3178 #AAA031 #31AA63

square

#313BAA #AA3178 #AAA031 #31AA63

split-complementary

#313BAA #AA6331 #78AA31

monochromatic

#161A4B #232B7A #313BAA #4D57CC #7C84D9

Accessibility & contrast

On white

8.99

#313BAA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#313BAA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313BAA

8.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313BAA	#FFFFFF	#000000	##FFFFFF
##313BAA	1.00	8.99	2.34	8.99
#FFFFFF	8.99	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FAE

Deuteranopia (green-blind)

#0044A8

Tritanopia (blue-blind)

#00586D

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #313baa;
/* rgb */ color: rgb(49, 59, 170);
/* oklch */ color: oklch(41.9% 0.175 272.3);

Tailwind

colors: {
  custom: {
    50: '#7a71c4',
    500: '#313baa',
    950: '#000000',
  },
}

SCSS

$custom: #313baa;
$custom-light: #7a71c4;
$custom-dark: #000000;

JSON

{
  "hex": "#313baa",
  "rgb": {
    "r": 49,
    "g": 59,
    "b": 170
  },
  "hsl": {
    "h": 235.041,
    "s": 55.251,
    "l": 42.941
  },
  "oklch": {
    "l": 0.41944,
    "c": 0.17522,
    "h": 272.3
  },
  "luminance": 0.06683
}

Semantic roles & 50–950 ramp

primary

#313BAA

secondary

#C2BC75

accent

#D249DF

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #313BAA

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

Preview Lab → · Contrast checker → · Palette generator →