#3155B9#3155B9

#3155B9 is a mid, vivid blue. Relative luminance 0.107; OKLCH L 48.2% C 0.164 H 265.6°. Best body text is #FFFFFF at 6.71:1 contrast (WCAG AA passes).

Color values

HEX	#3155B9
RGB	rgb(49, 85, 185)
HSL	hsl(224, 58%, 46%)
HSV	hsv(224, 74%, 73%)
CMYK	cmyk(73.5%, 54.1%, 0%, 27.5%)
CIE-LAB	lab(38.99, 22.37, -56.61)
CIE-LCH	lch(38.99, 60.87, 291.56°)
OKLab	oklab(48.21% -0.0125 -0.163)
OKLCH	oklch(48.21% 0.164 265.6)
XYZ	xyz(13.2690, 10.6513, 47.2461)
Luminance	0.1065 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3155B9 #B99531

analogous

#3199B9 #3155B9 #5131B9

triadic

#3155B9 #B93155 #55B931

tetradic

#3155B9 #B93199 #B99531 #31B951

square

#3155B9 #B93199 #B99531 #31B951

split-complementary

#3155B9 #B95131 #99B931

monochromatic

#172958 #243F89 #3155B9 #5576D2 #869DDF

Accessibility & contrast

On white

6.71

#3155B9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#3155B9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3155B9

6.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3155B9	#FFFFFF	#000000	##FFFFFF
##3155B9	1.00	6.71	3.13	6.71
#FFFFFF	6.71	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0362BD

Deuteranopia (green-blind)

#0056B7

Tritanopia (blue-blind)

#006D7E

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3155b9;
/* rgb */ color: rgb(49, 85, 185);
/* oklch */ color: oklch(48.2% 0.164 265.6);

Tailwind

colors: {
  custom: {
    50: '#7c84cf',
    500: '#3155b9',
    950: '#000000',
  },
}

SCSS

$custom: #3155b9;
$custom-light: #7c84cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3155b9",
  "rgb": {
    "r": 49,
    "g": 85,
    "b": 185
  },
  "hsl": {
    "h": 224.118,
    "s": 58.12,
    "l": 45.882
  },
  "oklch": {
    "l": 0.48212,
    "c": 0.1635,
    "h": 265.6
  },
  "luminance": 0.10653
}

Semantic roles & 50–950 ramp

primary

#3155B9

secondary

#C8B57D

accent

#B846E1

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3155B9

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

Preview Lab → · Contrast checker → · Palette generator →