#315BB1#315BB1

#315BB1 is a mid, vivid blue. Relative luminance 0.113; OKLCH L 48.9% C 0.145 H 262.7°. Best body text is #FFFFFF at 6.44:1 contrast (WCAG AA passes).

Color values

HEX	#315BB1
RGB	rgb(49, 91, 177)
HSL	hsl(220, 57%, 44%)
HSV	hsv(220, 72%, 69%)
CMYK	cmyk(72.3%, 48.6%, 0%, 30.6%)
CIE-LAB	lab(40.09, 15.44, -50.12)
CIE-LCH	lch(40.09, 52.44, 287.12°)
OKLab	oklab(48.88% -0.0185 -0.1438)
OKLCH	oklch(48.88% 0.145 262.7)
XYZ	xyz(12.9407, 11.3081, 43.0871)
Luminance	0.1131 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#315BB1 #B18731

analogous

#319BB1 #315BB1 #4731B1

triadic

#315BB1 #B1315B #5BB131

tetradic

#315BB1 #B1319B #B18731 #31B147

square

#315BB1 #B1319B #B18731 #31B147

split-complementary

#315BB1 #B14731 #9BB131

monochromatic

#162A51 #244281 #315BB1 #517ACF #809EDC

Accessibility & contrast

On white

6.44

#315BB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.26

#315BB1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #315BB1

6.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##315BB1	#FFFFFF	#000000	##FFFFFF
##315BB1	1.00	6.44	3.26	6.44
#FFFFFF	6.44	1.00	21.00	1.00
#000000	3.26	21.00	1.00	21.00
##FFFFFF	6.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C65B4

Deuteranopia (green-blind)

#0459AF

Tritanopia (blue-blind)

#006F7D

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #315bb1;
/* rgb */ color: rgb(49, 91, 177);
/* oklch */ color: oklch(48.9% 0.145 262.7);

Tailwind

colors: {
  custom: {
    50: '#7a88c9',
    500: '#315bb1',
    950: '#000000',
  },
}

SCSS

$custom: #315bb1;
$custom-light: #7a88c9;
$custom-dark: #000000;

JSON

{
  "hex": "#315bb1",
  "rgb": {
    "r": 49,
    "g": 91,
    "b": 177
  },
  "hsl": {
    "h": 220.313,
    "s": 56.637,
    "l": 44.314
  },
  "oklch": {
    "l": 0.48879,
    "c": 0.145,
    "h": 262.7
  },
  "luminance": 0.11309
}

Semantic roles & 50–950 ramp

primary

#315BB1

secondary

#C5AC79

accent

#AE48E0

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #315BB1

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

Preview Lab → · Contrast checker → · Palette generator →