#3155B2#3155B2

#3155B2 is a mid, vivid blue. Relative luminance 0.104; OKLCH L 47.7% C 0.154 H 265.1°. Best body text is #FFFFFF at 6.83:1 contrast (WCAG AA passes).

Color values

HEX	#3155B2
RGB	rgb(49, 85, 178)
HSL	hsl(223, 57%, 45%)
HSV	hsv(223, 72%, 70%)
CMYK	cmyk(72.5%, 52.2%, 0%, 30.2%)
CIE-LAB	lab(38.49, 19.74, -53.30)
CIE-LCH	lch(38.49, 56.84, 290.32°)
OKLab	oklab(47.67% -0.0132 -0.1533)
OKLCH	oklch(47.67% 0.154 265.1)
XYZ	xyz(12.5482, 10.3630, 43.4498)
Luminance	0.1036 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3155B2 #B28E31

analogous

#3196B2 #3155B2 #4E31B2

triadic

#3155B2 #B23155 #55B231

tetradic

#3155B2 #B23196 #B28E31 #31B24E

square

#3155B2 #B23196 #B28E31 #31B24E

split-complementary

#3155B2 #B24E31 #96B231

monochromatic

#172752 #243E82 #3155B2 #5174CF #819BDC

Accessibility & contrast

On white

6.83

#3155B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#3155B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3155B2

6.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3155B2	#FFFFFF	#000000	##FFFFFF
##3155B2	1.00	6.83	3.07	6.83
#FFFFFF	6.83	1.00	21.00	1.00
#000000	3.07	21.00	1.00	21.00
##FFFFFF	6.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1861B5

Deuteranopia (green-blind)

#0055B0

Tritanopia (blue-blind)

#006B7B

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3155b2;
/* rgb */ color: rgb(49, 85, 178);
/* oklch */ color: oklch(47.7% 0.154 265.1);

Tailwind

colors: {
  custom: {
    50: '#7a84ca',
    500: '#3155b2',
    950: '#000000',
  },
}

SCSS

$custom: #3155b2;
$custom-light: #7a84ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3155b2",
  "rgb": {
    "r": 49,
    "g": 85,
    "b": 178
  },
  "hsl": {
    "h": 223.256,
    "s": 56.828,
    "l": 44.51
  },
  "oklch": {
    "l": 0.47674,
    "c": 0.15385,
    "h": 265.1
  },
  "luminance": 0.10364
}

Semantic roles & 50–950 ramp

primary

#3155B2

secondary

#C5B079

accent

#B648E0

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #3155B2

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

Preview Lab → · Contrast checker → · Palette generator →