#313AB2#313AB2

#313AB2 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.5% C 0.187 H 272.1°. Best body text is #FFFFFF at 8.83:1 contrast (WCAG AA passes).

Color values

HEX	#313AB2
RGB	rgb(49, 58, 178)
HSL	hsl(236, 57%, 45%)
HSV	hsv(236, 72%, 70%)
CMYK	cmyk(72.5%, 67.4%, 0%, 30.2%)
CIE-LAB	lab(31.56, 37.27, -64.59)
CIE-LCH	lch(31.56, 74.57, 299.99°)
OKLab	oklab(42.52% 0.0069 -0.1867)
OKLCH	oklch(42.52% 0.187 272.1)
XYZ	xyz(10.8128, 6.8923, 42.8714)
Luminance	0.0689 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313AB2 #B2A931

analogous

#317BB2 #313AB2 #6931B2

triadic

#313AB2 #B2313A #3AB231

tetradic

#313AB2 #B2317B #B2A931 #31B269

square

#313AB2 #B2317B #B2A931 #31B269

split-complementary

#313AB2 #B26931 #7BB231

monochromatic

#171B52 #242A82 #313AB2 #515ACF #8187DC

Accessibility & contrast

On white

8.83

#313AB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#313AB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313AB2

8.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313AB2	#FFFFFF	#000000	##FFFFFF
##313AB2	1.00	8.83	2.38	8.83
#FFFFFF	8.83	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B6

Deuteranopia (green-blind)

#0044B0

Tritanopia (blue-blind)

#005A71

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #313ab2;
/* rgb */ color: rgb(49, 58, 178);
/* oklch */ color: oklch(42.5% 0.187 272.1);

Tailwind

colors: {
  custom: {
    50: '#7c70ca',
    500: '#313ab2',
    950: '#000000',
  },
}

SCSS

$custom: #313ab2;
$custom-light: #7c70ca;
$custom-dark: #000000;

JSON

{
  "hex": "#313ab2",
  "rgb": {
    "r": 49,
    "g": 58,
    "b": 178
  },
  "hsl": {
    "h": 235.814,
    "s": 56.828,
    "l": 44.51
  },
  "oklch": {
    "l": 0.42523,
    "c": 0.18686,
    "h": 272.1
  },
  "luminance": 0.06893
}

Semantic roles & 50–950 ramp

primary

#313AB2

secondary

#C5C079

accent

#D548E0

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #313AB2

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

Preview Lab → · Contrast checker → · Palette generator →