#3799BF#3799BF

#3799BF is a light, moderate cyan. Relative luminance 0.274; OKLCH L 64.2% C 0.105 H 227.9°. Best body text is #000000 at 6.47:1 contrast (WCAG AA passes).

Color values

HEX	#3799BF
RGB	rgb(55, 153, 191)
HSL	hsl(197, 55%, 48%)
HSV	hsv(197, 71%, 75%)
CMYK	cmyk(71.2%, 19.9%, 0%, 25.1%)
CIE-LAB	lab(59.30, -15.88, -27.87)
CIE-LCH	lch(59.30, 32.08, 240.33°)
OKLab	oklab(64.24% -0.0707 -0.0781)
OKLCH	oklch(64.24% 0.105 227.9)
XYZ	xyz(22.3669, 27.3537, 53.3811)
Luminance	0.2736 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3799BF #BF5D37

analogous

#37BFA1 #3799BF #3755BF

triadic

#3799BF #BF3799 #99BF37

tetradic

#3799BF #A137BF #BF5D37 #55BF37

square

#3799BF #A137BF #BF5D37 #55BF37

split-complementary

#3799BF #BF3755 #BFA137

monochromatic

#1C4D60 #29738F #3799BF #62B2D2 #91C9DF

Accessibility & contrast

On white

3.25

#3799BF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.47

#3799BF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3799BF

6.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3799BF	#FFFFFF	#000000	##000000
##3799BF	1.00	3.25	6.47	6.47
#FFFFFF	3.25	1.00	21.00	21.00
#000000	6.47	21.00	1.00	1.00
##000000	6.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8596C1

Deuteranopia (green-blind)

#7289BF

Tritanopia (blue-blind)

#00A4A5

Achromatopsia (no color)

#8F8F8F

Design tokens & code

CSS

--color: #3799bf;
/* rgb */ color: rgb(55, 153, 191);
/* oklch */ color: oklch(64.2% 0.105 227.9);

Tailwind

colors: {
  custom: {
    50: '#7fb7d2',
    500: '#3799bf',
    950: '#000000',
  },
}

SCSS

$custom: #3799bf;
$custom-light: #7fb7d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3799bf",
  "rgb": {
    "r": 55,
    "g": 153,
    "b": 191
  },
  "hsl": {
    "h": 196.765,
    "s": 55.285,
    "l": 48.235
  },
  "oklch": {
    "l": 0.64245,
    "c": 0.10535,
    "h": 227.9
  },
  "luminance": 0.27356
}

Semantic roles & 50–950 ramp

primary

#3799BF

secondary

#CA9A88

accent

#7349DF

background

#F8FBFC

surface

#F0F6F9

border

#CBD0D2

text

#0B1114

muted

#7C8082

Preview Lab

Preview with #3799BF

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

Preview Lab → · Contrast checker → · Palette generator →