#3166C9#3166C9

#3166C9 is a mid, vivid blue. Relative luminance 0.144; OKLCH L 53.0% C 0.164 H 261.5°. Best body text is #FFFFFF at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#3166C9
RGB	rgb(49, 102, 201)
HSL	hsl(219, 61%, 49%)
HSV	hsv(219, 76%, 79%)
CMYK	cmyk(75.6%, 49.3%, 0%, 21.2%)
CIE-LAB	lab(44.76, 17.35, -56.57)
CIE-LCH	lch(44.76, 59.17, 287.05°)
OKLab	oklab(52.96% -0.0243 -0.1626)
OKLCH	oklch(52.96% 0.164 261.5)
XYZ	xyz(16.5568, 14.3709, 57.1483)
Luminance	0.1437 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3166C9 #C99431

analogous

#31B2C9 #3166C9 #4831C9

triadic

#3166C9 #C93166 #66C931

tetradic

#3166C9 #C931B2 #C99431 #31C948

square

#3166C9 #C931B2 #C99431 #31C948

split-complementary

#3166C9 #C94831 #B2C931

monochromatic

#193467 #254D98 #3166C9 #5F89D8 #90AEE4

Accessibility & contrast

On white

5.42

#3166C9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.87

#3166C9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3166C9

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3166C9	#FFFFFF	#000000	##FFFFFF
##3166C9	1.00	5.42	3.87	5.42
#FFFFFF	5.42	1.00	21.00	1.00
#000000	3.87	21.00	1.00	21.00
##FFFFFF	5.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C71CD

Deuteranopia (green-blind)

#0063C7

Tritanopia (blue-blind)

#007E8E

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3166c9;
/* rgb */ color: rgb(49, 102, 201);
/* oklch */ color: oklch(53.0% 0.164 261.5);

Tailwind

colors: {
  custom: {
    50: '#7e91da',
    500: '#3166c9',
    950: '#000000',
  },
}

SCSS

$custom: #3166c9;
$custom-light: #7e91da;
$custom-dark: #000000;

JSON

{
  "hex": "#3166c9",
  "rgb": {
    "r": 49,
    "g": 102,
    "b": 201
  },
  "hsl": {
    "h": 219.079,
    "s": 60.8,
    "l": 49.02
  },
  "oklch": {
    "l": 0.52957,
    "c": 0.16441,
    "h": 261.5
  },
  "luminance": 0.14373
}

Semantic roles & 50–950 ramp

primary

#3166C9

secondary

#CFB687

accent

#AC44E4

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0B0C15

muted

#7C7D83

Preview Lab

Preview with #3166C9

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

Preview Lab → · Contrast checker → · Palette generator →