#315FB4#315FB4

#315FB4 is a mid, vivid blue. Relative luminance 0.121; OKLCH L 50.0% C 0.144 H 261.4°. Best body text is #FFFFFF at 6.13:1 contrast (WCAG AA passes).

Color values

HEX	#315FB4
RGB	rgb(49, 95, 180)
HSL	hsl(219, 57%, 45%)
HSV	hsv(219, 73%, 71%)
CMYK	cmyk(72.8%, 47.2%, 0%, 29.4%)
CIE-LAB	lab(41.42, 13.96, -49.74)
CIE-LCH	lch(41.42, 51.67, 285.68°)
OKLab	oklab(49.96% -0.0215 -0.1426)
OKLCH	oklch(49.96% 0.144 261.4)
XYZ	xyz(13.5941, 12.1312, 44.7963)
Luminance	0.1213 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#315FB4 #B48631

analogous

#31A1B4 #315FB4 #4431B4

triadic

#315FB4 #B4315F #5FB431

tetradic

#315FB4 #B431A1 #B48631 #31B444

square

#315FB4 #B431A1 #B48631 #31B444

split-complementary

#315FB4 #B44431 #A1B431

monochromatic

#172C54 #244684 #315FB4 #527ED0 #82A2DD

Accessibility & contrast

On white

6.13

#315FB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.43

#315FB4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #315FB4

6.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##315FB4	#FFFFFF	#000000	##FFFFFF
##315FB4	1.00	6.13	3.43	6.13
#FFFFFF	6.13	1.00	21.00	1.00
#000000	3.43	21.00	1.00	21.00
##FFFFFF	6.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3268B7

Deuteranopia (green-blind)

#115CB2

Tritanopia (blue-blind)

#007381

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #315fb4;
/* rgb */ color: rgb(49, 95, 180);
/* oklch */ color: oklch(50.0% 0.144 261.4);

Tailwind

colors: {
  custom: {
    50: '#7a8bcb',
    500: '#315fb4',
    950: '#000000',
  },
}

SCSS

$custom: #315fb4;
$custom-light: #7a8bcb;
$custom-dark: #000000;

JSON

{
  "hex": "#315fb4",
  "rgb": {
    "r": 49,
    "g": 95,
    "b": 180
  },
  "hsl": {
    "h": 218.931,
    "s": 57.205,
    "l": 44.902
  },
  "oklch": {
    "l": 0.4996,
    "c": 0.14426,
    "h": 261.4
  },
  "luminance": 0.12133
}

Semantic roles & 50–950 ramp

primary

#315FB4

secondary

#C6AC7B

accent

#AB47E0

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #315FB4

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

Preview Lab → · Contrast checker → · Palette generator →