#339BB4#339BB4

#339BB4 is a light, moderate cyan. Relative luminance 0.274; OKLCH L 64.1% C 0.099 H 217.3°. Best body text is #000000 at 6.49:1 contrast (WCAG AA passes).

Color values

HEX	#339BB4
RGB	rgb(51, 155, 180)
HSL	hsl(192, 56%, 45%)
HSV	hsv(192, 72%, 71%)
CMYK	cmyk(71.7%, 13.9%, 0%, 29.4%)
CIE-LAB	lab(59.38, -21.10, -21.55)
CIE-LCH	lch(59.38, 30.17, 225.61°)
OKLab	oklab(64.14% -0.0789 -0.0601)
OKLCH	oklch(64.14% 0.099 217.3)
XYZ	xyz(21.3214, 27.4393, 47.3438)
Luminance	0.2744 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#339BB4 #B44C33

analogous

#33B48C #339BB4 #335AB4

triadic

#339BB4 #B4339B #9BB433

tetradic

#339BB4 #8C33B4 #B44C33 #5AB433

square

#339BB4 #8C33B4 #B44C33 #5AB433

split-complementary

#339BB4 #B4335A #B48C33

monochromatic

#184955 #257284 #339BB4 #55B7CF #85CBDC

Accessibility & contrast

On white

3.24

#339BB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.49

#339BB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #339BB4

6.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##339BB4	#FFFFFF	#000000	##000000
##339BB4	1.00	3.24	6.49	6.49
#FFFFFF	3.24	1.00	21.00	21.00
#000000	6.49	21.00	1.00	1.00
##000000	6.49	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8B96B5

Deuteranopia (green-blind)

#7989B4

Tritanopia (blue-blind)

#00A4A3

Achromatopsia (no color)

#8F8F8F

Design tokens & code

CSS

--color: #339bb4;
/* rgb */ color: rgb(51, 155, 180);
/* oklch */ color: oklch(64.1% 0.099 217.3);

Tailwind

colors: {
  custom: {
    50: '#7db8ca',
    500: '#339bb4',
    950: '#000000',
  },
}

SCSS

$custom: #339bb4;
$custom-light: #7db8ca;
$custom-dark: #000000;

JSON

{
  "hex": "#339bb4",
  "rgb": {
    "r": 51,
    "g": 155,
    "b": 180
  },
  "hsl": {
    "h": 191.628,
    "s": 55.844,
    "l": 45.294
  },
  "oklch": {
    "l": 0.64138,
    "c": 0.09919,
    "h": 217.3
  },
  "luminance": 0.27442
}

Semantic roles & 50–950 ramp

primary

#339BB4

secondary

#C68B7D

accent

#6649DF

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #339BB4

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

Preview Lab → · Contrast checker → · Palette generator →