#313BA6#313BA6

#313BA6 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.6% C 0.170 H 272.4°. Best body text is #FFFFFF at 9.10:1 contrast (WCAG AA passes).

Color values

HEX	#313BA6
RGB	rgb(49, 59, 166)
HSL	hsl(235, 54%, 42%)
HSV	hsv(235, 70%, 65%)
CMYK	cmyk(70.5%, 64.5%, 0%, 34.9%)
CIE-LAB	lab(30.72, 32.37, -58.79)
CIE-LCH	lch(30.72, 67.11, 298.84°)
OKLab	oklab(41.58% 0.0072 -0.1697)
OKLCH	oklch(41.58% 0.17 272.4)
XYZ	xyz(9.7112, 6.5331, 36.8182)
Luminance	0.0653 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313BA6 #A69C31

analogous

#3176A6 #313BA6 #6231A6

triadic

#313BA6 #A6313B #3BA631

tetradic

#313BA6 #A63176 #A69C31 #31A662

square

#313BA6 #A63176 #A69C31 #31A662

split-complementary

#313BA6 #A66231 #76A631

monochromatic

#151947 #232A77 #313BA6 #4A55CA #7A82D8

Accessibility & contrast

On white

9.10

#313BA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#313BA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313BA6

9.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313BA6	#FFFFFF	#000000	##FFFFFF
##313BA6	1.00	9.10	2.31	9.10
#FFFFFF	9.10	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA9

Deuteranopia (green-blind)

#0043A4

Tritanopia (blue-blind)

#00576B

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #313ba6;
/* rgb */ color: rgb(49, 59, 166);
/* oklch */ color: oklch(41.6% 0.170 272.4);

Tailwind

colors: {
  custom: {
    50: '#7971c1',
    500: '#313ba6',
    950: '#000000',
  },
}

SCSS

$custom: #313ba6;
$custom-light: #7971c1;
$custom-dark: #000000;

JSON

{
  "hex": "#313ba6",
  "rgb": {
    "r": 49,
    "g": 59,
    "b": 166
  },
  "hsl": {
    "h": 234.872,
    "s": 54.419,
    "l": 42.157
  },
  "oklch": {
    "l": 0.41578,
    "c": 0.16989,
    "h": 272.4
  },
  "luminance": 0.06534
}

Semantic roles & 50–950 ramp

primary

#313BA6

secondary

#C0B973

accent

#D14ADE

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #313BA6

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

Preview Lab → · Contrast checker → · Palette generator →