#313CA5#313CA5

#313CA5 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.7% C 0.167 H 272.2°. Best body text is #FFFFFF at 9.05:1 contrast (WCAG AA passes).

Color values

HEX	#313CA5
RGB	rgb(49, 60, 165)
HSL	hsl(234, 54%, 42%)
HSV	hsv(234, 70%, 65%)
CMYK	cmyk(70.3%, 63.6%, 0%, 35.3%)
CIE-LAB	lab(30.88, 31.36, -57.92)
CIE-LCH	lch(30.88, 65.87, 298.44°)
OKLab	oklab(41.67% 0.0065 -0.1672)
OKLCH	oklch(41.67% 0.167 272.2)
XYZ	xyz(9.6717, 6.6004, 36.3543)
Luminance	0.0660 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313CA5 #A59A31

analogous

#3176A5 #313CA5 #6031A5

triadic

#313CA5 #A5313C #3CA531

tetradic

#313CA5 #A53176 #A59A31 #31A560

square

#313CA5 #A53176 #A59A31 #31A560

split-complementary

#313CA5 #A56031 #76A531

monochromatic

#151A47 #232B76 #313CA5 #4A56C9 #7982D7

Accessibility & contrast

On white

9.05

#313CA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#313CA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313CA5

9.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313CA5	#FFFFFF	#000000	##FFFFFF
##313CA5	1.00	9.05	2.32	9.05
#FFFFFF	9.05	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA8

Deuteranopia (green-blind)

#0043A3

Tritanopia (blue-blind)

#00576B

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #313ca5;
/* rgb */ color: rgb(49, 60, 165);
/* oklch */ color: oklch(41.7% 0.167 272.2);

Tailwind

colors: {
  custom: {
    50: '#7971c1',
    500: '#313ca5',
    950: '#000000',
  },
}

SCSS

$custom: #313ca5;
$custom-light: #7971c1;
$custom-dark: #000000;

JSON

{
  "hex": "#313ca5",
  "rgb": {
    "r": 49,
    "g": 60,
    "b": 165
  },
  "hsl": {
    "h": 234.31,
    "s": 54.206,
    "l": 41.961
  },
  "oklch": {
    "l": 0.41668,
    "c": 0.16733,
    "h": 272.2
  },
  "luminance": 0.06601
}

Semantic roles & 50–950 ramp

primary

#313CA5

secondary

#C0B872

accent

#D04ADE

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #313CA5

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

Preview Lab → · Contrast checker → · Palette generator →