#3155B0#3155B0

#3155B0 is a mid, vivid blue. Relative luminance 0.103; OKLCH L 47.5% C 0.151 H 264.9°. Best body text is #FFFFFF at 6.87:1 contrast (WCAG AA passes).

Color values

HEX	#3155B0
RGB	rgb(49, 85, 176)
HSL	hsl(223, 56%, 44%)
HSV	hsv(223, 72%, 69%)
CMYK	cmyk(72.2%, 51.7%, 0%, 31%)
CIE-LAB	lab(38.35, 18.99, -52.35)
CIE-LCH	lch(38.35, 55.69, 289.94°)
OKLab	oklab(47.52% -0.0134 -0.1505)
OKLCH	oklch(47.52% 0.151 264.9)
XYZ	xyz(12.3488, 10.2833, 42.3999)
Luminance	0.1028 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3155B0 #B08C31

analogous

#3195B0 #3155B0 #4D31B0

triadic

#3155B0 #B03155 #55B031

tetradic

#3155B0 #B03195 #B08C31 #31B04D

square

#3155B0 #B03195 #B08C31 #31B04D

split-complementary

#3155B0 #B04D31 #95B031

monochromatic

#162750 #243E80 #3155B0 #5074CE #809ADC

Accessibility & contrast

On white

6.87

#3155B0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#3155B0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3155B0

6.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3155B0	#FFFFFF	#000000	##FFFFFF
##3155B0	1.00	6.87	3.06	6.87
#FFFFFF	6.87	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C60B3

Deuteranopia (green-blind)

#0055AE

Tritanopia (blue-blind)

#006B7A

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #3155b0;
/* rgb */ color: rgb(49, 85, 176);
/* oklch */ color: oklch(47.5% 0.151 264.9);

Tailwind

colors: {
  custom: {
    50: '#7a84c8',
    500: '#3155b0',
    950: '#000000',
  },
}

SCSS

$custom: #3155b0;
$custom-light: #7a84c8;
$custom-dark: #000000;

JSON

{
  "hex": "#3155b0",
  "rgb": {
    "r": 49,
    "g": 85,
    "b": 176
  },
  "hsl": {
    "h": 222.992,
    "s": 56.444,
    "l": 44.118
  },
  "oklch": {
    "l": 0.47523,
    "c": 0.15107,
    "h": 264.9
  },
  "luminance": 0.10285
}

Semantic roles & 50–950 ramp

primary

#3155B0

secondary

#C5AF78

accent

#B548E0

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #3155B0

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

Preview Lab → · Contrast checker → · Palette generator →