#3155D3#3155D3

#3155D3 is a mid, vivid blue. Relative luminance 0.119; OKLCH L 50.3% C 0.198 H 266.7°. Best body text is #FFFFFF at 6.23:1 contrast (WCAG AA passes).

Color values

HEX	#3155D3
RGB	rgb(49, 85, 211)
HSL	hsl(227, 65%, 51%)
HSV	hsv(227, 77%, 83%)
CMYK	cmyk(76.8%, 59.7%, 0%, 17.3%)
CIE-LAB	lab(40.98, 32.02, -68.46)
CIE-LCH	lch(40.98, 75.57, 295.06°)
OKLab	oklab(50.33% -0.0114 -0.1978)
OKLCH	oklch(50.33% 0.198 266.7)
XYZ	xyz(16.2689, 11.8513, 63.0455)
Luminance	0.1185 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3155D3 #D3AF31

analogous

#31A6D3 #3155D3 #5E31D3

triadic

#3155D3 #D33155 #55D331

tetradic

#3155D3 #D331A6 #D3AF31 #31D35E

square

#3155D3 #D331A6 #D3AF31 #31D35E

split-complementary

#3155D3 #D35E31 #A6D331

monochromatic

#182C71 #2340A4 #3155D3 #637FDE #96A8E9

Accessibility & contrast

On white

6.23

#3155D3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.37

#3155D3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3155D3

6.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3155D3	#FFFFFF	#000000	##FFFFFF
##3155D3	1.00	6.23	3.37	6.23
#FFFFFF	6.23	1.00	21.00	1.00
#000000	3.37	21.00	1.00	21.00
##FFFFFF	6.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068D7

Deuteranopia (green-blind)

#0059D1

Tritanopia (blue-blind)

#00758C

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #3155d3;
/* rgb */ color: rgb(49, 85, 211);
/* oklch */ color: oklch(50.3% 0.198 266.7);

Tailwind

colors: {
  custom: {
    50: '#8284e1',
    500: '#3155d3',
    950: '#000000',
  },
}

SCSS

$custom: #3155d3;
$custom-light: #8284e1;
$custom-dark: #000000;

JSON

{
  "hex": "#3155d3",
  "rgb": {
    "r": 49,
    "g": 85,
    "b": 211
  },
  "hsl": {
    "h": 226.667,
    "s": 64.8,
    "l": 50.98
  },
  "oklch": {
    "l": 0.50331,
    "c": 0.19816,
    "h": 266.7
  },
  "luminance": 0.11853
}

Semantic roles & 50–950 ramp

primary

#3155D3

secondary

#D4C48C

accent

#C340E8

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3155D3

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

Preview Lab → · Contrast checker → · Palette generator →