#3399BC#3399BC

#3399BC is a light, moderate cyan. Relative luminance 0.271; OKLCH L 64.0% C 0.105 H 225.2°. Best body text is #000000 at 6.42:1 contrast (WCAG AA passes).

Color values

HEX	#3399BC
RGB	rgb(51, 153, 188)
HSL	hsl(195, 57%, 47%)
HSV	hsv(195, 73%, 74%)
CMYK	cmyk(72.9%, 18.6%, 0%, 26.3%)
CIE-LAB	lab(59.08, -17.42, -26.53)
CIE-LCH	lch(59.08, 31.74, 236.71°)
OKLab	oklab(64% -0.0738 -0.0743)
OKLCH	oklch(64% 0.105 225.2)
XYZ	xyz(21.8299, 27.1146, 51.6503)
Luminance	0.2712 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3399BC #BC5633

analogous

#33BC9A #3399BC #3355BC

triadic

#3399BC #BC3399 #99BC33

tetradic

#3399BC #9A33BC #BC5633 #55BC33

square

#3399BC #9A33BC #BC5633 #55BC33

split-complementary

#3399BC #BC3355 #BC9A33

monochromatic

#194B5C #26728C #3399BC #5AB4D2 #8ACADF

Accessibility & contrast

On white

3.27

#3399BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.42

#3399BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3399BC

6.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3399BC	#FFFFFF	#000000	##000000
##3399BC	1.00	3.27	6.42	6.42
#FFFFFF	3.27	1.00	21.00	21.00
#000000	6.42	21.00	1.00	1.00
##000000	6.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8696BE

Deuteranopia (green-blind)

#7388BC

Tritanopia (blue-blind)

#00A3A4

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #3399bc;
/* rgb */ color: rgb(51, 153, 188);
/* oklch */ color: oklch(64.0% 0.105 225.2);

Tailwind

colors: {
  custom: {
    50: '#7db7d0',
    500: '#3399bc',
    950: '#000000',
  },
}

SCSS

$custom: #3399bc;
$custom-light: #7db7d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3399bc",
  "rgb": {
    "r": 51,
    "g": 153,
    "b": 188
  },
  "hsl": {
    "h": 195.328,
    "s": 57.322,
    "l": 46.863
  },
  "oklch": {
    "l": 0.64001,
    "c": 0.10471,
    "h": 225.2
  },
  "luminance": 0.27117
}

Semantic roles & 50–950 ramp

primary

#3399BC

secondary

#C99481

accent

#6E47E1

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0B1114

muted

#7C8082

Preview Lab

Preview with #3399BC

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

Preview Lab → · Contrast checker → · Palette generator →