#315BBB#315BBB

#315BBB is a mid, vivid blue. Relative luminance 0.117; OKLCH L 49.6% C 0.159 H 263.8°. Best body text is #FFFFFF at 6.28:1 contrast (WCAG AA passes).

Color values

HEX	#315BBB
RGB	rgb(49, 91, 187)
HSL	hsl(222, 58%, 46%)
HSV	hsv(222, 74%, 73%)
CMYK	cmyk(73.8%, 51.3%, 0%, 26.7%)
CIE-LAB	lab(40.77, 19.20, -54.89)
CIE-LCH	lch(40.77, 58.15, 289.28°)
OKLab	oklab(49.61% -0.0172 -0.1579)
OKLCH	oklch(49.61% 0.159 263.8)
XYZ	xyz(13.9742, 11.7215, 48.5301)
Luminance	0.1172 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#315BBB #BB9131

analogous

#31A0BB #315BBB #4C31BB

triadic

#315BBB #BB315B #5BBB31

tetradic

#315BBB #BB31A0 #BB9131 #31BB4C

square

#315BBB #BB31A0 #BB9131 #31BB4C

split-complementary

#315BBB #BB4C31 #A0BB31

monochromatic

#182C5A #24438B #315BBB #567CD3 #87A2E0

Accessibility & contrast

On white

6.28

#315BBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.34

#315BBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #315BBB

6.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##315BBB	#FFFFFF	#000000	##FFFFFF
##315BBB	1.00	6.28	3.34	6.28
#FFFFFF	6.28	1.00	21.00	1.00
#000000	3.34	21.00	1.00	21.00
##FFFFFF	6.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E67BE

Deuteranopia (green-blind)

#005AB9

Tritanopia (blue-blind)

#007282

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #315bbb;
/* rgb */ color: rgb(49, 91, 187);
/* oklch */ color: oklch(49.6% 0.159 263.8);

Tailwind

colors: {
  custom: {
    50: '#7c88d0',
    500: '#315bbb',
    950: '#000000',
  },
}

SCSS

$custom: #315bbb;
$custom-light: #7c88d0;
$custom-dark: #000000;

JSON

{
  "hex": "#315bbb",
  "rgb": {
    "r": 49,
    "g": 91,
    "b": 187
  },
  "hsl": {
    "h": 221.739,
    "s": 58.475,
    "l": 46.275
  },
  "oklch": {
    "l": 0.4961,
    "c": 0.1588,
    "h": 263.8
  },
  "luminance": 0.11723
}

Semantic roles & 50–950 ramp

primary

#315BBB

secondary

#C9B27F

accent

#B246E2

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #315BBB

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

Preview Lab → · Contrast checker → · Palette generator →