#315CB1#315CB1

#315CB1 is a mid, vivid blue. Relative luminance 0.115; OKLCH L 49.1% C 0.144 H 262.3°. Best body text is #FFFFFF at 6.37:1 contrast (WCAG AA passes).

Color values

HEX	#315CB1
RGB	rgb(49, 92, 177)
HSL	hsl(220, 57%, 44%)
HSV	hsv(220, 72%, 69%)
CMYK	cmyk(72.3%, 48%, 0%, 30.6%)
CIE-LAB	lab(40.38, 14.78, -49.66)
CIE-LCH	lch(40.38, 51.82, 286.58°)
OKLab	oklab(49.1% -0.0193 -0.1425)
OKLCH	oklch(49.1% 0.144 262.3)
XYZ	xyz(13.0268, 11.4802, 43.1158)
Luminance	0.1148 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#315CB1 #B18631

analogous

#319CB1 #315CB1 #4631B1

triadic

#315CB1 #B1315C #5CB131

tetradic

#315CB1 #B1319C #B18631 #31B146

square

#315CB1 #B1319C #B18631 #31B146

split-complementary

#315CB1 #B14631 #9CB131

monochromatic

#162A51 #244381 #315CB1 #517BCF #809FDC

Accessibility & contrast

On white

6.37

#315CB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#315CB1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #315CB1

6.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##315CB1	#FFFFFF	#000000	##FFFFFF
##315CB1	1.00	6.37	3.30	6.37
#FFFFFF	6.37	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E65B4

Deuteranopia (green-blind)

#0A5AAF

Tritanopia (blue-blind)

#00707E

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #315cb1;
/* rgb */ color: rgb(49, 92, 177);
/* oklch */ color: oklch(49.1% 0.144 262.3);

Tailwind

colors: {
  custom: {
    50: '#7a89c9',
    500: '#315cb1',
    950: '#000000',
  },
}

SCSS

$custom: #315cb1;
$custom-light: #7a89c9;
$custom-dark: #000000;

JSON

{
  "hex": "#315cb1",
  "rgb": {
    "r": 49,
    "g": 92,
    "b": 177
  },
  "hsl": {
    "h": 219.844,
    "s": 56.637,
    "l": 44.314
  },
  "oklch": {
    "l": 0.49095,
    "c": 0.14377,
    "h": 262.3
  },
  "luminance": 0.11482
}

Semantic roles & 50–950 ramp

primary

#315CB1

secondary

#C5AB79

accent

#AD48E0

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #315CB1

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

Preview Lab → · Contrast checker → · Palette generator →