#3399B9#3399B9

#3399B9 is a light, moderate cyan. Relative luminance 0.270; OKLCH L 63.9% C 0.103 H 223.1°. Best body text is #000000 at 6.40:1 contrast (WCAG AA passes).

Color values

HEX	#3399B9
RGB	rgb(51, 153, 185)
HSL	hsl(194, 57%, 46%)
HSV	hsv(194, 72%, 73%)
CMYK	cmyk(72.4%, 17.3%, 0%, 27.5%)
CIE-LAB	lab(58.96, -18.41, -25.02)
CIE-LCH	lch(58.96, 31.07, 233.65°)
OKLab	oklab(63.87% -0.0749 -0.07)
OKLCH	oklch(63.87% 0.103 223.1)
XYZ	xyz(21.5098, 26.9866, 49.9648)
Luminance	0.2699 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3399B9 #B95333

analogous

#33B996 #3399B9 #3356B9

triadic

#3399B9 #B93399 #99B933

tetradic

#3399B9 #9633B9 #B95333 #56B933

square

#3399B9 #9633B9 #B95333 #56B933

split-complementary

#3399B9 #B93356 #B99633

monochromatic

#194A59 #267189 #3399B9 #58B4D1 #88CADE

Accessibility & contrast

On white

3.28

#3399B9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.40

#3399B9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3399B9

6.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3399B9	#FFFFFF	#000000	##000000
##3399B9	1.00	3.28	6.40	6.40
#FFFFFF	3.28	1.00	21.00	21.00
#000000	6.40	21.00	1.00	1.00
##000000	6.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8795BB

Deuteranopia (green-blind)

#7488B9

Tritanopia (blue-blind)

#00A3A3

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #3399b9;
/* rgb */ color: rgb(51, 153, 185);
/* oklch */ color: oklch(63.9% 0.103 223.1);

Tailwind

colors: {
  custom: {
    50: '#7db7ce',
    500: '#3399b9',
    950: '#000000',
  },
}

SCSS

$custom: #3399b9;
$custom-light: #7db7ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3399b9",
  "rgb": {
    "r": 51,
    "g": 153,
    "b": 185
  },
  "hsl": {
    "h": 194.328,
    "s": 56.78,
    "l": 46.275
  },
  "oklch": {
    "l": 0.63867,
    "c": 0.10252,
    "h": 223.1
  },
  "luminance": 0.26989
}

Semantic roles & 50–950 ramp

primary

#3399B9

secondary

#C89180

accent

#6C48E0

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #3399B9

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

Preview Lab → · Contrast checker → · Palette generator →