#315BB4#315BB4

#315BB4 is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.1% C 0.149 H 263.1°. Best body text is #FFFFFF at 6.39:1 contrast (WCAG AA passes).

Color values

HEX	#315BB4
RGB	rgb(49, 91, 180)
HSL	hsl(221, 57%, 45%)
HSV	hsv(221, 73%, 71%)
CMYK	cmyk(72.8%, 49.4%, 0%, 29.4%)
CIE-LAB	lab(40.29, 16.56, -51.56)
CIE-LCH	lch(40.29, 54.16, 287.81°)
OKLab	oklab(49.1% -0.018 -0.1481)
OKLCH	oklch(49.1% 0.149 263.1)
XYZ	xyz(13.2430, 11.4290, 44.6793)
Luminance	0.1143 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#315BB4 #B48A31

analogous

#319DB4 #315BB4 #4831B4

triadic

#315BB4 #B4315B #5BB431

tetradic

#315BB4 #B4319D #B48A31 #31B448

square

#315BB4 #B4319D #B48A31 #31B448

split-complementary

#315BB4 #B44831 #9DB431

monochromatic

#172A54 #244384 #315BB4 #527BD0 #829FDD

Accessibility & contrast

On white

6.39

#315BB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#315BB4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #315BB4

6.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##315BB4	#FFFFFF	#000000	##FFFFFF
##315BB4	1.00	6.39	3.29	6.39
#FFFFFF	6.39	1.00	21.00	1.00
#000000	3.29	21.00	1.00	21.00
##FFFFFF	6.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2865B7

Deuteranopia (green-blind)

#0059B2

Tritanopia (blue-blind)

#00707F

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #315bb4;
/* rgb */ color: rgb(49, 91, 180);
/* oklch */ color: oklch(49.1% 0.149 263.1);

Tailwind

colors: {
  custom: {
    50: '#7a88cb',
    500: '#315bb4',
    950: '#000000',
  },
}

SCSS

$custom: #315bb4;
$custom-light: #7a88cb;
$custom-dark: #000000;

JSON

{
  "hex": "#315bb4",
  "rgb": {
    "r": 49,
    "g": 91,
    "b": 180
  },
  "hsl": {
    "h": 220.763,
    "s": 57.205,
    "l": 44.902
  },
  "oklch": {
    "l": 0.49095,
    "c": 0.14916,
    "h": 263.1
  },
  "luminance": 0.1143
}

Semantic roles & 50–950 ramp

primary

#315BB4

secondary

#C6AE7B

accent

#AF47E0

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #315BB4

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

Preview Lab → · Contrast checker → · Palette generator →