#315FC3#315FC3

#315FC3 is a mid, vivid blue. Relative luminance 0.128; OKLCH L 51.0% C 0.165 H 263.2°. Best body text is #FFFFFF at 5.91:1 contrast (WCAG AA passes).

Color values

HEX	#315FC3
RGB	rgb(49, 95, 195)
HSL	hsl(221, 60%, 48%)
HSV	hsv(221, 75%, 76%)
CMYK	cmyk(74.9%, 51.3%, 0%, 23.5%)
CIE-LAB	lab(42.42, 19.61, -56.88)
CIE-LCH	lch(42.42, 60.16, 289.02°)
OKLab	oklab(51.04% -0.0195 -0.1636)
OKLCH	oklch(51.04% 0.165 263.2)
XYZ	xyz(15.2056, 12.7758, 53.2838)
Luminance	0.1278 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#315FC3 #C39531

analogous

#31A8C3 #315FC3 #4C31C3

triadic

#315FC3 #C3315F #5FC331

tetradic

#315FC3 #C331A8 #C39531 #31C34C

square

#315FC3 #C331A8 #C39531 #31C34C

split-complementary

#315FC3 #C34C31 #A8C331

monochromatic

#182F61 #254792 #315FC3 #5B82D6 #8CA7E2

Accessibility & contrast

On white

5.91

#315FC3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.56

#315FC3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #315FC3

5.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##315FC3	#FFFFFF	#000000	##FFFFFF
##315FC3	1.00	5.91	3.56	5.91
#FFFFFF	5.91	1.00	21.00	1.00
#000000	3.56	21.00	1.00	21.00
##FFFFFF	5.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E6BC7

Deuteranopia (green-blind)

#005EC1

Tritanopia (blue-blind)

#007788

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #315fc3;
/* rgb */ color: rgb(49, 95, 195);
/* oklch */ color: oklch(51.0% 0.165 263.2);

Tailwind

colors: {
  custom: {
    50: '#7d8bd6',
    500: '#315fc3',
    950: '#000000',
  },
}

SCSS

$custom: #315fc3;
$custom-light: #7d8bd6;
$custom-dark: #000000;

JSON

{
  "hex": "#315fc3",
  "rgb": {
    "r": 49,
    "g": 95,
    "b": 195
  },
  "hsl": {
    "h": 221.096,
    "s": 59.836,
    "l": 47.843
  },
  "oklch": {
    "l": 0.51044,
    "c": 0.16479,
    "h": 263.2
  },
  "luminance": 0.12778
}

Semantic roles & 50–950 ramp

primary

#315FC3

secondary

#CCB583

accent

#B145E3

background

#F8F8FD

surface

#EFF0FA

border

#CACBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #315FC3

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

Preview Lab → · Contrast checker → · Palette generator →