#3155B8#3155B8

#3155B8 is a mid, vivid blue. Relative luminance 0.106; OKLCH L 48.1% C 0.162 H 265.5°. Best body text is #FFFFFF at 6.73:1 contrast (WCAG AA passes).

Color values

HEX	#3155B8
RGB	rgb(49, 85, 184)
HSL	hsl(224, 58%, 46%)
HSV	hsv(224, 73%, 72%)
CMYK	cmyk(73.4%, 53.8%, 0%, 27.8%)
CIE-LAB	lab(38.91, 21.99, -56.14)
CIE-LCH	lch(38.91, 60.29, 291.39°)
OKLab	oklab(48.14% -0.0126 -0.1616)
OKLCH	oklch(48.14% 0.162 265.5)
XYZ	xyz(13.1638, 10.6093, 46.6921)
Luminance	0.1061 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3155B8 #B89431

analogous

#3198B8 #3155B8 #5031B8

triadic

#3155B8 #B83155 #55B831

tetradic

#3155B8 #B83198 #B89431 #31B850

square

#3155B8 #B83198 #B89431 #31B850

split-complementary

#3155B8 #B85031 #98B831

monochromatic

#172857 #243F88 #3155B8 #5576D2 #859DDE

Accessibility & contrast

On white

6.73

#3155B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#3155B8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3155B8

6.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3155B8	#FFFFFF	#000000	##FFFFFF
##3155B8	1.00	6.73	3.12	6.73
#FFFFFF	6.73	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0762BB

Deuteranopia (green-blind)

#0056B6

Tritanopia (blue-blind)

#006D7E

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3155b8;
/* rgb */ color: rgb(49, 85, 184);
/* oklch */ color: oklch(48.1% 0.162 265.5);

Tailwind

colors: {
  custom: {
    50: '#7b84ce',
    500: '#3155b8',
    950: '#000000',
  },
}

SCSS

$custom: #3155b8;
$custom-light: #7b84ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3155b8",
  "rgb": {
    "r": 49,
    "g": 85,
    "b": 184
  },
  "hsl": {
    "h": 224,
    "s": 57.94,
    "l": 45.686
  },
  "oklch": {
    "l": 0.48135,
    "c": 0.16213,
    "h": 265.5
  },
  "luminance": 0.10611
}

Semantic roles & 50–950 ramp

primary

#3155B8

secondary

#C8B47D

accent

#B847E1

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3155B8

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

Preview Lab → · Contrast checker → · Palette generator →