#3155A5#3155A5

#3155A5 is a mid, vivid blue. Relative luminance 0.099; OKLCH L 46.7% C 0.136 H 263.7°. Best body text is #FFFFFF at 7.06:1 contrast (WCAG AA passes).

Color values

HEX	#3155A5
RGB	rgb(49, 85, 165)
HSL	hsl(221, 54%, 42%)
HSV	hsv(221, 70%, 65%)
CMYK	cmyk(70.3%, 48.5%, 0%, 35.3%)
CIE-LAB	lab(37.60, 14.86, -47.02)
CIE-LCH	lch(37.60, 49.31, 287.53°)
OKLab	oklab(46.72% -0.0148 -0.1348)
OKLCH	oklch(46.72% 0.136 263.7)
XYZ	xyz(11.3043, 9.8654, 36.8985)
Luminance	0.0987 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3155A5 #A58131

analogous

#318FA5 #3155A5 #4731A5

triadic

#3155A5 #A53155 #55A531

tetradic

#3155A5 #A5318F #A58131 #31A547

square

#3155A5 #A5318F #A58131 #31A547

split-complementary

#3155A5 #A54731 #8FA531

monochromatic

#152447 #233D76 #3155A5 #4A71C9 #7996D7

Accessibility & contrast

On white

7.06

#3155A5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.97

#3155A5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3155A5

7.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3155A5	#FFFFFF	#000000	##FFFFFF
##3155A5	1.00	7.06	2.97	7.06
#FFFFFF	7.06	1.00	21.00	1.00
#000000	2.97	21.00	1.00	21.00
##FFFFFF	7.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A5EA8

Deuteranopia (green-blind)

#0C53A3

Tritanopia (blue-blind)

#006875

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3155a5;
/* rgb */ color: rgb(49, 85, 165);
/* oklch */ color: oklch(46.7% 0.136 263.7);

Tailwind

colors: {
  custom: {
    50: '#7784c0',
    500: '#3155a5',
    950: '#000000',
  },
}

SCSS

$custom: #3155a5;
$custom-light: #7784c0;
$custom-dark: #000000;

JSON

{
  "hex": "#3155a5",
  "rgb": {
    "r": 49,
    "g": 85,
    "b": 165
  },
  "hsl": {
    "h": 221.379,
    "s": 54.206,
    "l": 41.961
  },
  "oklch": {
    "l": 0.46716,
    "c": 0.13563,
    "h": 263.7
  },
  "luminance": 0.09867
}

Semantic roles & 50–950 ramp

primary

#3155A5

secondary

#C0A872

accent

#B04ADE

background

#F7F8FB

surface

#EEEFF7

border

#C9CAD0

text

#0A0A12

muted

#7C7C81

Preview Lab

Preview with #3155A5

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

Preview Lab → · Contrast checker → · Palette generator →