#313AAC#313AAC

#313AAC is a dark, vivid blue. Relative luminance 0.067; OKLCH L 42.0% C 0.179 H 272.4°. Best body text is #FFFFFF at 9.01:1 contrast (WCAG AA passes).

Color values

HEX	#313AAC
RGB	rgb(49, 58, 172)
HSL	hsl(236, 56%, 43%)
HSV	hsv(236, 72%, 67%)
CMYK	cmyk(71.5%, 66.3%, 0%, 32.5%)
CIE-LAB	lab(31.01, 35.15, -61.91)
CIE-LCH	lch(31.01, 71.19, 299.59°)
OKLab	oklab(41.96% 0.0074 -0.1789)
OKLCH	oklch(41.96% 0.179 272.4)
XYZ	xyz(10.2236, 6.6566, 39.7678)
Luminance	0.0666 (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

#313AAC #ACA331

analogous

#3177AC #313AAC #6531AC

triadic

#313AAC #AC313A #3AAC31

tetradic

#313AAC #AC3177 #ACA331 #31AC65

square

#313AAC #AC3177 #ACA331 #31AC65

split-complementary

#313AAC #AC6531 #77AC31

monochromatic

#161A4D #232A7C #313AAC #4E57CC #7D84DA

Accessibility & contrast

On white

9.01

#313AAC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#313AAC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313AAC

9.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313AAC	#FFFFFF	#000000	##FFFFFF
##313AAC	1.00	9.01	2.33	9.01
#FFFFFF	9.01	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB0

Deuteranopia (green-blind)

#0043AA

Tritanopia (blue-blind)

#00586E

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #313aac;
/* rgb */ color: rgb(49, 58, 172);
/* oklch */ color: oklch(42.0% 0.179 272.4);

Tailwind

colors: {
  custom: {
    50: '#7b70c6',
    500: '#313aac',
    950: '#000000',
  },
}

SCSS

$custom: #313aac;
$custom-light: #7b70c6;
$custom-dark: #000000;

JSON

{
  "hex": "#313aac",
  "rgb": {
    "r": 49,
    "g": 58,
    "b": 172
  },
  "hsl": {
    "h": 235.61,
    "s": 55.656,
    "l": 43.333
  },
  "oklch": {
    "l": 0.41956,
    "c": 0.17904,
    "h": 272.4
  },
  "luminance": 0.06658
}

Semantic roles & 50–950 ramp

primary

#313AAC

secondary

#C3BD76

accent

#D449DF

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #313AAC

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

Preview Lab → · Contrast checker → · Palette generator →