#315BB8#315BB8

#315BB8 is a mid, vivid blue. Relative luminance 0.116; OKLCH L 49.4% C 0.155 H 263.5°. Best body text is #FFFFFF at 6.33:1 contrast (WCAG AA passes).

Color values

HEX	#315BB8
RGB	rgb(49, 91, 184)
HSL	hsl(221, 58%, 46%)
HSV	hsv(221, 73%, 72%)
CMYK	cmyk(73.4%, 50.5%, 0%, 27.8%)
CIE-LAB	lab(40.56, 18.07, -53.47)
CIE-LCH	lch(40.56, 56.44, 288.67°)
OKLab	oklab(49.39% -0.0175 -0.1537)
OKLCH	oklch(49.39% 0.155 263.5)
XYZ	xyz(13.6564, 11.5944, 46.8563)
Luminance	0.1160 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#315BB8 #B88E31

analogous

#319EB8 #315BB8 #4A31B8

triadic

#315BB8 #B8315B #5BB831

tetradic

#315BB8 #B8319E #B88E31 #31B84A

square

#315BB8 #B8319E #B88E31 #31B84A

split-complementary

#315BB8 #B84A31 #9EB831

monochromatic

#172B57 #244388 #315BB8 #557BD2 #85A1DE

Accessibility & contrast

On white

6.33

#315BB8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.32

#315BB8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #315BB8

6.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##315BB8	#FFFFFF	#000000	##FFFFFF
##315BB8	1.00	6.33	3.32	6.33
#FFFFFF	6.33	1.00	21.00	1.00
#000000	3.32	21.00	1.00	21.00
##FFFFFF	6.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2366BB

Deuteranopia (green-blind)

#005AB6

Tritanopia (blue-blind)

#007181

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #315bb8;
/* rgb */ color: rgb(49, 91, 184);
/* oklch */ color: oklch(49.4% 0.155 263.5);

Tailwind

colors: {
  custom: {
    50: '#7b88ce',
    500: '#315bb8',
    950: '#000000',
  },
}

SCSS

$custom: #315bb8;
$custom-light: #7b88ce;
$custom-dark: #000000;

JSON

{
  "hex": "#315bb8",
  "rgb": {
    "r": 49,
    "g": 91,
    "b": 184
  },
  "hsl": {
    "h": 221.333,
    "s": 57.94,
    "l": 45.686
  },
  "oklch": {
    "l": 0.49387,
    "c": 0.15469,
    "h": 263.5
  },
  "luminance": 0.11596
}

Semantic roles & 50–950 ramp

primary

#315BB8

secondary

#C8B17D

accent

#B147E1

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #315BB8

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

Preview Lab → · Contrast checker → · Palette generator →