#315FB5#315FB5

#315FB5 is a mid, vivid blue. Relative luminance 0.122; OKLCH L 50.0% C 0.146 H 261.6°. Best body text is #FFFFFF at 6.11:1 contrast (WCAG AA passes).

Color values

HEX	#315FB5
RGB	rgb(49, 95, 181)
HSL	hsl(219, 57%, 45%)
HSV	hsv(219, 73%, 71%)
CMYK	cmyk(72.9%, 47.5%, 0%, 29%)
CIE-LAB	lab(41.49, 14.34, -50.23)
CIE-LCH	lch(41.49, 52.23, 285.94°)
OKLab	oklab(50.03% -0.0214 -0.1441)
OKLCH	oklch(50.03% 0.146 261.6)
XYZ	xyz(13.6963, 12.1721, 45.3347)
Luminance	0.1217 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#315FB5 #B58731

analogous

#31A1B5 #315FB5 #4531B5

triadic

#315FB5 #B5315F #5FB531

tetradic

#315FB5 #B531A1 #B58731 #31B545

square

#315FB5 #B531A1 #B58731 #31B545

split-complementary

#315FB5 #B54531 #A1B531

monochromatic

#172C55 #244685 #315FB5 #537FD0 #83A2DD

Accessibility & contrast

On white

6.11

#315FB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.43

#315FB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #315FB5

6.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##315FB5	#FFFFFF	#000000	##FFFFFF
##315FB5	1.00	6.11	3.43	6.11
#FFFFFF	6.11	1.00	21.00	1.00
#000000	3.43	21.00	1.00	21.00
##FFFFFF	6.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3168B8

Deuteranopia (green-blind)

#0E5CB3

Tritanopia (blue-blind)

#007381

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #315fb5;
/* rgb */ color: rgb(49, 95, 181);
/* oklch */ color: oklch(50.0% 0.146 261.6);

Tailwind

colors: {
  custom: {
    50: '#7a8bcc',
    500: '#315fb5',
    950: '#000000',
  },
}

SCSS

$custom: #315fb5;
$custom-light: #7a8bcc;
$custom-dark: #000000;

JSON

{
  "hex": "#315fb5",
  "rgb": {
    "r": 49,
    "g": 95,
    "b": 181
  },
  "hsl": {
    "h": 219.091,
    "s": 57.391,
    "l": 45.098
  },
  "oklch": {
    "l": 0.50031,
    "c": 0.14564,
    "h": 261.6
  },
  "luminance": 0.12174
}

Semantic roles & 50–950 ramp

primary

#315FB5

secondary

#C7AC7B

accent

#AB47E1

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #315FB5

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

Preview Lab → · Contrast checker → · Palette generator →