#3155BB#3155BB

#3155BB is a mid, vivid blue. Relative luminance 0.107; OKLCH L 48.4% C 0.166 H 265.7°. Best body text is #FFFFFF at 6.67:1 contrast (WCAG AA passes).

Color values

HEX	#3155BB
RGB	rgb(49, 85, 187)
HSL	hsl(224, 58%, 46%)
HSV	hsv(224, 74%, 73%)
CMYK	cmyk(73.8%, 54.5%, 0%, 26.7%)
CIE-LAB	lab(39.13, 23.12, -57.54)
CIE-LCH	lch(39.13, 62.01, 291.89°)
OKLab	oklab(48.37% -0.0124 -0.1658)
OKLCH	oklch(48.37% 0.166 265.7)
XYZ	xyz(13.4816, 10.7364, 48.3659)
Luminance	0.1074 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3155BB #BB9731

analogous

#319ABB #3155BB #5231BB

triadic

#3155BB #BB3155 #55BB31

tetradic

#3155BB #BB319A #BB9731 #31BB52

square

#3155BB #BB319A #BB9731 #31BB52

split-complementary

#3155BB #BB5231 #9ABB31

monochromatic

#18295A #243F8B #3155BB #5677D3 #879EE0

Accessibility & contrast

On white

6.67

#3155BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#3155BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3155BB

6.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3155BB	#FFFFFF	#000000	##FFFFFF
##3155BB	1.00	6.67	3.15	6.67
#FFFFFF	6.67	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063BF

Deuteranopia (green-blind)

#0056B9

Tritanopia (blue-blind)

#006E7F

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3155bb;
/* rgb */ color: rgb(49, 85, 187);
/* oklch */ color: oklch(48.4% 0.166 265.7);

Tailwind

colors: {
  custom: {
    50: '#7c84d0',
    500: '#3155bb',
    950: '#000000',
  },
}

SCSS

$custom: #3155bb;
$custom-light: #7c84d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3155bb",
  "rgb": {
    "r": 49,
    "g": 85,
    "b": 187
  },
  "hsl": {
    "h": 224.348,
    "s": 58.475,
    "l": 46.275
  },
  "oklch": {
    "l": 0.48369,
    "c": 0.16623,
    "h": 265.7
  },
  "luminance": 0.10738
}

Semantic roles & 50–950 ramp

primary

#3155BB

secondary

#C9B67F

accent

#B946E2

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3155BB

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

Preview Lab → · Contrast checker → · Palette generator →