#315CB5#315CB5

#315CB5 is a mid, vivid blue. Relative luminance 0.116; OKLCH L 49.4% C 0.149 H 262.8°. Best body text is #FFFFFF at 6.31:1 contrast (WCAG AA passes).

Color values

HEX	#315CB5
RGB	rgb(49, 92, 181)
HSL	hsl(220, 57%, 45%)
HSV	hsv(220, 73%, 71%)
CMYK	cmyk(72.9%, 49.2%, 0%, 29%)
CIE-LAB	lab(40.64, 16.29, -51.59)
CIE-LCH	lch(40.64, 54.10, 287.52°)
OKLab	oklab(49.38% -0.0188 -0.1481)
OKLCH	oklch(49.38% 0.149 262.8)
XYZ	xyz(13.4313, 11.6420, 45.2464)
Luminance	0.1164 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#315CB5 #B58A31

analogous

#319EB5 #315CB5 #4831B5

triadic

#315CB5 #B5315C #5CB531

tetradic

#315CB5 #B5319E #B58A31 #31B548

square

#315CB5 #B5319E #B58A31 #31B548

split-complementary

#315CB5 #B54831 #9EB531

monochromatic

#172B55 #244485 #315CB5 #537CD0 #83A0DD

Accessibility & contrast

On white

6.31

#315CB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.33

#315CB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #315CB5

6.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##315CB5	#FFFFFF	#000000	##FFFFFF
##315CB5	1.00	6.31	3.33	6.31
#FFFFFF	6.31	1.00	21.00	1.00
#000000	3.33	21.00	1.00	21.00
##FFFFFF	6.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A66B8

Deuteranopia (green-blind)

#005AB3

Tritanopia (blue-blind)

#007180

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #315cb5;
/* rgb */ color: rgb(49, 92, 181);
/* oklch */ color: oklch(49.4% 0.149 262.8);

Tailwind

colors: {
  custom: {
    50: '#7a89cc',
    500: '#315cb5',
    950: '#000000',
  },
}

SCSS

$custom: #315cb5;
$custom-light: #7a89cc;
$custom-dark: #000000;

JSON

{
  "hex": "#315cb5",
  "rgb": {
    "r": 49,
    "g": 92,
    "b": 181
  },
  "hsl": {
    "h": 220.455,
    "s": 57.391,
    "l": 45.098
  },
  "oklch": {
    "l": 0.49382,
    "c": 0.14931,
    "h": 262.8
  },
  "luminance": 0.11643
}

Semantic roles & 50–950 ramp

primary

#315CB5

secondary

#C7AE7B

accent

#AF47E1

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #315CB5

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

Preview Lab → · Contrast checker → · Palette generator →