#3399B4#3399B4

#3399B4 is a light, moderate cyan. Relative luminance 0.268; OKLCH L 63.6% C 0.099 H 219.2°. Best body text is #000000 at 6.36:1 contrast (WCAG AA passes).

Color values

HEX	#3399B4
RGB	rgb(51, 153, 180)
HSL	hsl(193, 56%, 45%)
HSV	hsv(193, 72%, 71%)
CMYK	cmyk(71.7%, 15%, 0%, 29.4%)
CIE-LAB	lab(58.77, -20.05, -22.49)
CIE-LCH	lch(58.77, 30.13, 228.28°)
OKLab	oklab(63.65% -0.0769 -0.0628)
OKLCH	oklch(63.65% 0.099 219.2)
XYZ	xyz(20.9913, 26.7791, 47.2338)
Luminance	0.2678 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3399B4 #B44E33

analogous

#33B48E #3399B4 #3359B4

triadic

#3399B4 #B43399 #99B433

tetradic

#3399B4 #8E33B4 #B44E33 #59B433

square

#3399B4 #8E33B4 #B44E33 #59B433

split-complementary

#3399B4 #B43359 #B48E33

monochromatic

#184855 #257084 #3399B4 #55B5CF #85CADC

Accessibility & contrast

On white

3.30

#3399B4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.36

#3399B4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3399B4

6.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3399B4	#FFFFFF	#000000	##000000
##3399B4	1.00	3.30	6.36	6.36
#FFFFFF	3.30	1.00	21.00	21.00
#000000	6.36	21.00	1.00	1.00
##000000	6.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8895B5

Deuteranopia (green-blind)

#7688B4

Tritanopia (blue-blind)

#00A2A2

Achromatopsia (no color)

#8D8D8D

Design tokens & code

CSS

--color: #3399b4;
/* rgb */ color: rgb(51, 153, 180);
/* oklch */ color: oklch(63.6% 0.099 219.2);

Tailwind

colors: {
  custom: {
    50: '#7cb7ca',
    500: '#3399b4',
    950: '#000000',
  },
}

SCSS

$custom: #3399b4;
$custom-light: #7cb7ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3399b4",
  "rgb": {
    "r": 51,
    "g": 153,
    "b": 180
  },
  "hsl": {
    "h": 192.558,
    "s": 55.844,
    "l": 45.294
  },
  "oklch": {
    "l": 0.63649,
    "c": 0.09924,
    "h": 219.2
  },
  "luminance": 0.26782
}

Semantic roles & 50–950 ramp

primary

#3399B4

secondary

#C68C7D

accent

#6849DF

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #3399B4

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

Preview Lab → · Contrast checker → · Palette generator →