#313BA5#313BA5

#313BA5 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.5% C 0.169 H 272.5°. Best body text is #FFFFFF at 9.13:1 contrast (WCAG AA passes).

Color values

HEX	#313BA5
RGB	rgb(49, 59, 165)
HSL	hsl(235, 54%, 42%)
HSV	hsv(235, 70%, 65%)
CMYK	cmyk(70.3%, 64.2%, 0%, 35.3%)
CIE-LAB	lab(30.63, 32.01, -58.33)
CIE-LCH	lch(30.63, 66.53, 298.76°)
OKLab	oklab(41.49% 0.0072 -0.1684)
OKLCH	oklch(41.49% 0.169 272.5)
XYZ	xyz(9.6198, 6.4966, 36.3370)
Luminance	0.0650 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313BA5 #A59B31

analogous

#3175A5 #313BA5 #6131A5

triadic

#313BA5 #A5313B #3BA531

tetradic

#313BA5 #A53175 #A59B31 #31A561

square

#313BA5 #A53175 #A59B31 #31A561

split-complementary

#313BA5 #A56131 #75A531

monochromatic

#151947 #232A76 #313BA5 #4A55C9 #7981D7

Accessibility & contrast

On white

9.13

#313BA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#313BA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313BA5

9.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313BA5	#FFFFFF	#000000	##FFFFFF
##313BA5	1.00	9.13	2.30	9.13
#FFFFFF	9.13	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA8

Deuteranopia (green-blind)

#0043A3

Tritanopia (blue-blind)

#00566A

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #313ba5;
/* rgb */ color: rgb(49, 59, 165);
/* oklch */ color: oklch(41.5% 0.169 272.5);

Tailwind

colors: {
  custom: {
    50: '#7971c1',
    500: '#313ba5',
    950: '#000000',
  },
}

SCSS

$custom: #313ba5;
$custom-light: #7971c1;
$custom-dark: #000000;

JSON

{
  "hex": "#313ba5",
  "rgb": {
    "r": 49,
    "g": 59,
    "b": 165
  },
  "hsl": {
    "h": 234.828,
    "s": 54.206,
    "l": 41.961
  },
  "oklch": {
    "l": 0.41487,
    "c": 0.16854,
    "h": 272.5
  },
  "luminance": 0.06498
}

Semantic roles & 50–950 ramp

primary

#313BA5

secondary

#C0B972

accent

#D14ADE

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #313BA5

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

Preview Lab → · Contrast checker → · Palette generator →