#315FB3#315FB3

#315FB3 is a mid, vivid blue. Relative luminance 0.121; OKLCH L 49.9% C 0.143 H 261.3°. Best body text is #FFFFFF at 6.14:1 contrast (WCAG AA passes).

Color values

HEX	#315FB3
RGB	rgb(49, 95, 179)
HSL	hsl(219, 57%, 45%)
HSV	hsv(219, 73%, 70%)
CMYK	cmyk(72.6%, 46.9%, 0%, 29.8%)
CIE-LAB	lab(41.36, 13.59, -49.26)
CIE-LCH	lch(41.36, 51.10, 285.42°)
OKLab	oklab(49.89% -0.0217 -0.1412)
OKLCH	oklch(49.89% 0.143 261.3)
XYZ	xyz(13.4926, 12.0906, 44.2617)
Luminance	0.1209 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#315FB3 #B38531

analogous

#31A0B3 #315FB3 #4431B3

triadic

#315FB3 #B3315F #5FB331

tetradic

#315FB3 #B331A0 #B38531 #31B344

square

#315FB3 #B331A0 #B38531 #31B344

split-complementary

#315FB3 #B34431 #A0B331

monochromatic

#172C53 #244683 #315FB3 #527ED0 #82A2DD

Accessibility & contrast

On white

6.14

#315FB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.42

#315FB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #315FB3

6.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##315FB3	#FFFFFF	#000000	##FFFFFF
##315FB3	1.00	6.14	3.42	6.14
#FFFFFF	6.14	1.00	21.00	1.00
#000000	3.42	21.00	1.00	21.00
##FFFFFF	6.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3368B6

Deuteranopia (green-blind)

#145CB1

Tritanopia (blue-blind)

#007380

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #315fb3;
/* rgb */ color: rgb(49, 95, 179);
/* oklch */ color: oklch(49.9% 0.143 261.3);

Tailwind

colors: {
  custom: {
    50: '#7a8bca',
    500: '#315fb3',
    950: '#000000',
  },
}

SCSS

$custom: #315fb3;
$custom-light: #7a8bca;
$custom-dark: #000000;

JSON

{
  "hex": "#315fb3",
  "rgb": {
    "r": 49,
    "g": 95,
    "b": 179
  },
  "hsl": {
    "h": 218.769,
    "s": 57.018,
    "l": 44.706
  },
  "oklch": {
    "l": 0.49891,
    "c": 0.14288,
    "h": 261.3
  },
  "luminance": 0.12092
}

Semantic roles & 50–950 ramp

primary

#315FB3

secondary

#C6AB7A

accent

#AA48E0

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #315FB3

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

Preview Lab → · Contrast checker → · Palette generator →