#3799BB#3799BB

#3799BB is a light, moderate cyan. Relative luminance 0.272; OKLCH L 64.1% C 0.102 H 225.1°. Best body text is #000000 at 6.44:1 contrast (WCAG AA passes).

Color values

HEX	#3799BB
RGB	rgb(55, 153, 187)
HSL	hsl(195, 55%, 47%)
HSV	hsv(195, 71%, 73%)
CMYK	cmyk(70.6%, 18.2%, 0%, 26.7%)
CIE-LAB	lab(59.14, -17.20, -25.87)
CIE-LCH	lch(59.14, 31.06, 236.38°)
OKLab	oklab(64.07% -0.0722 -0.0724)
OKLCH	oklch(64.07% 0.102 225.1)
XYZ	xyz(21.9328, 27.1801, 51.0944)
Luminance	0.2718 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3799BB #BB5937

analogous

#37BB9B #3799BB #3757BB

triadic

#3799BB #BB3799 #99BB37

tetradic

#3799BB #9B37BB #BB5937 #57BB37

square

#3799BB #9B37BB #BB5937 #57BB37

split-complementary

#3799BB #BB3757 #BB9B37

monochromatic

#1B4C5C #29728C #3799BB #5FB3D0 #8EC9DE

Accessibility & contrast

On white

3.26

#3799BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.44

#3799BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3799BB

6.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3799BB	#FFFFFF	#000000	##000000
##3799BB	1.00	3.26	6.44	6.44
#FFFFFF	3.26	1.00	21.00	21.00
#000000	6.44	21.00	1.00	1.00
##000000	6.44	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8696BD

Deuteranopia (green-blind)

#7489BB

Tritanopia (blue-blind)

#00A3A4

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #3799bb;
/* rgb */ color: rgb(55, 153, 187);
/* oklch */ color: oklch(64.1% 0.102 225.1);

Tailwind

colors: {
  custom: {
    50: '#7fb7cf',
    500: '#3799bb',
    950: '#000000',
  },
}

SCSS

$custom: #3799bb;
$custom-light: #7fb7cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3799bb",
  "rgb": {
    "r": 55,
    "g": 153,
    "b": 187
  },
  "hsl": {
    "h": 195.455,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.64065,
    "c": 0.10221,
    "h": 225.1
  },
  "luminance": 0.27183
}

Semantic roles & 50–950 ramp

primary

#3799BB

secondary

#C99785

accent

#704ADE

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #3799BB

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

Preview Lab → · Contrast checker → · Palette generator →