#3155A4#3155A4

#3155A4 is a mid, vivid blue. Relative luminance 0.098; OKLCH L 46.6% C 0.134 H 263.6°. Best body text is #FFFFFF at 7.08:1 contrast (WCAG AA passes).

Color values

HEX	#3155A4
RGB	rgb(49, 85, 164)
HSL	hsl(221, 54%, 42%)
HSV	hsv(221, 70%, 64%)
CMYK	cmyk(70.1%, 48.2%, 0%, 35.7%)
CIE-LAB	lab(37.53, 14.48, -46.53)
CIE-LCH	lch(37.53, 48.73, 287.28°)
OKLab	oklab(46.64% -0.0149 -0.1334)
OKLCH	oklch(46.64% 0.134 263.6)
XYZ	xyz(11.2136, 9.8292, 36.4210)
Luminance	0.0983 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3155A4 #A48031

analogous

#318FA4 #3155A4 #4631A4

triadic

#3155A4 #A43155 #55A431

tetradic

#3155A4 #A4318F #A48031 #31A446

square

#3155A4 #A4318F #A48031 #31A446

split-complementary

#3155A4 #A44631 #8FA431

monochromatic

#152446 #233D75 #3155A4 #4971C9 #7996D7

Accessibility & contrast

On white

7.08

#3155A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.97

#3155A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3155A4

7.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3155A4	#FFFFFF	#000000	##FFFFFF
##3155A4	1.00	7.08	2.97	7.08
#FFFFFF	7.08	1.00	21.00	1.00
#000000	2.97	21.00	1.00	21.00
##FFFFFF	7.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B5EA7

Deuteranopia (green-blind)

#0F53A2

Tritanopia (blue-blind)

#006774

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3155a4;
/* rgb */ color: rgb(49, 85, 164);
/* oklch */ color: oklch(46.6% 0.134 263.6);

Tailwind

colors: {
  custom: {
    50: '#7784bf',
    500: '#3155a4',
    950: '#000000',
  },
}

SCSS

$custom: #3155a4;
$custom-light: #7784bf;
$custom-dark: #000000;

JSON

{
  "hex": "#3155a4",
  "rgb": {
    "r": 49,
    "g": 85,
    "b": 164
  },
  "hsl": {
    "h": 221.217,
    "s": 53.991,
    "l": 41.765
  },
  "oklch": {
    "l": 0.46644,
    "c": 0.1342,
    "h": 263.6
  },
  "luminance": 0.0983
}

Semantic roles & 50–950 ramp

primary

#3155A4

secondary

#BFA772

accent

#AF4ADD

background

#F7F8FB

surface

#EEEFF7

border

#C9CAD0

text

#0A0A12

muted

#7C7C81

Preview Lab

Preview with #3155A4

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

Preview Lab → · Contrast checker → · Palette generator →