#3399BF#3399BF

#3399BF is a light, moderate cyan. Relative luminance 0.272; OKLCH L 64.1% C 0.107 H 227.3°. Best body text is #000000 at 6.45:1 contrast (WCAG AA passes).

Color values

HEX	#3399BF
RGB	rgb(51, 153, 191)
HSL	hsl(196, 58%, 47%)
HSV	hsv(196, 73%, 75%)
CMYK	cmyk(73.3%, 19.9%, 0%, 25.1%)
CIE-LAB	lab(59.20, -16.42, -28.04)
CIE-LCH	lch(59.20, 32.49, 239.65°)
OKLab	oklab(64.14% -0.0726 -0.0786)
OKLCH	oklch(64.14% 0.107 227.3)
XYZ	xyz(22.1566, 27.2453, 53.3713)
Luminance	0.2725 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3399BF #BF5933

analogous

#33BF9F #3399BF #3353BF

triadic

#3399BF #BF3399 #99BF33

tetradic

#3399BF #9F33BF #BF5933 #53BF33

square

#3399BF #9F33BF #BF5933 #53BF33

split-complementary

#3399BF #BF3353 #BF9F33

monochromatic

#194C5E #26728F #3399BF #5CB3D3 #8CC9E0

Accessibility & contrast

On white

3.26

#3399BF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.45

#3399BF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3399BF

6.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3399BF	#FFFFFF	#000000	##000000
##3399BF	1.00	3.26	6.45	6.45
#FFFFFF	3.26	1.00	21.00	21.00
#000000	6.45	21.00	1.00	1.00
##000000	6.45	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8596C1

Deuteranopia (green-blind)

#7289BF

Tritanopia (blue-blind)

#00A4A5

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #3399bf;
/* rgb */ color: rgb(51, 153, 191);
/* oklch */ color: oklch(64.1% 0.107 227.3);

Tailwind

colors: {
  custom: {
    50: '#7eb7d2',
    500: '#3399bf',
    950: '#000000',
  },
}

SCSS

$custom: #3399bf;
$custom-light: #7eb7d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3399bf",
  "rgb": {
    "r": 51,
    "g": 153,
    "b": 191
  },
  "hsl": {
    "h": 196.286,
    "s": 57.851,
    "l": 47.451
  },
  "oklch": {
    "l": 0.64137,
    "c": 0.10704,
    "h": 227.3
  },
  "luminance": 0.27248
}

Semantic roles & 50–950 ramp

primary

#3399BF

secondary

#CB9783

accent

#7147E1

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0B1114

muted

#7C8082

Preview Lab

Preview with #3399BF

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

Preview Lab → · Contrast checker → · Palette generator →