#3155AB#3155AB

#3155AB is a mid, vivid blue. Relative luminance 0.101; OKLCH L 47.2% C 0.144 H 264.4°. Best body text is #FFFFFF at 6.96:1 contrast (WCAG AA passes).

Color values

HEX	#3155AB
RGB	rgb(49, 85, 171)
HSL	hsl(222, 55%, 43%)
HSV	hsv(222, 71%, 67%)
CMYK	cmyk(71.3%, 50.3%, 0%, 32.9%)
CIE-LAB	lab(38.00, 17.11, -49.94)
CIE-LCH	lch(38.00, 52.79, 288.91°)
OKLab	oklab(47.15% -0.0139 -0.1434)
OKLCH	oklch(47.15% 0.144 264.4)
XYZ	xyz(11.8632, 10.0890, 39.8423)
Luminance	0.1009 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3155AB #AB8731

analogous

#3192AB #3155AB #4A31AB

triadic

#3155AB #AB3155 #55AB31

tetradic

#3155AB #AB3192 #AB8731 #31AB4A

square

#3155AB #AB3192 #AB8731 #31AB4A

split-complementary

#3155AB #AB4A31 #92AB31

monochromatic

#16264C #233D7B #3155AB #4D73CC #7D98DA

Accessibility & contrast

On white

6.96

#3155AB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.02

#3155AB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3155AB

6.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3155AB	#FFFFFF	#000000	##FFFFFF
##3155AB	1.00	6.96	3.02	6.96
#FFFFFF	6.96	1.00	21.00	1.00
#000000	3.02	21.00	1.00	21.00
##FFFFFF	6.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#235FAE

Deuteranopia (green-blind)

#0054A9

Tritanopia (blue-blind)

#006978

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3155ab;
/* rgb */ color: rgb(49, 85, 171);
/* oklch */ color: oklch(47.2% 0.144 264.4);

Tailwind

colors: {
  custom: {
    50: '#7984c5',
    500: '#3155ab',
    950: '#000000',
  },
}

SCSS

$custom: #3155ab;
$custom-light: #7984c5;
$custom-dark: #000000;

JSON

{
  "hex": "#3155ab",
  "rgb": {
    "r": 49,
    "g": 85,
    "b": 171
  },
  "hsl": {
    "h": 222.295,
    "s": 55.455,
    "l": 43.137
  },
  "oklch": {
    "l": 0.47151,
    "c": 0.14409,
    "h": 264.4
  },
  "luminance": 0.1009
}

Semantic roles & 50–950 ramp

primary

#3155AB

secondary

#C2AC75

accent

#B349DF

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #3155AB

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

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