#339BB3#339BB3

#339BB3 is a light, moderate cyan. Relative luminance 0.274; OKLCH L 64.1% C 0.099 H 216.5°. Best body text is #000000 at 6.48:1 contrast (WCAG AA passes).

Color values

HEX	#339BB3
RGB	rgb(51, 155, 179)
HSL	hsl(191, 56%, 45%)
HSV	hsv(191, 72%, 70%)
CMYK	cmyk(71.5%, 13.4%, 0%, 29.8%)
CIE-LAB	lab(59.34, -21.43, -21.05)
CIE-LCH	lch(59.34, 30.03, 224.49°)
OKLab	oklab(64.1% -0.0793 -0.0587)
OKLCH	oklch(64.1% 0.099 216.5)
XYZ	xyz(21.2199, 27.3987, 46.8092)
Luminance	0.2740 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#339BB3 #B34B33

analogous

#33B38B #339BB3 #335BB3

triadic

#339BB3 #B3339B #9BB333

tetradic

#339BB3 #8B33B3 #B34B33 #5BB333

square

#339BB3 #8B33B3 #B34B33 #5BB333

split-complementary

#339BB3 #B3335B #B38B33

monochromatic

#184954 #257283 #339BB3 #55B8CE #84CCDC

Accessibility & contrast

On white

3.24

#339BB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.48

#339BB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #339BB3

6.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##339BB3	#FFFFFF	#000000	##000000
##339BB3	1.00	3.24	6.48	6.48
#FFFFFF	3.24	1.00	21.00	21.00
#000000	6.48	21.00	1.00	1.00
##000000	6.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8B96B4

Deuteranopia (green-blind)

#7989B3

Tritanopia (blue-blind)

#00A4A2

Achromatopsia (no color)

#8F8F8F

Design tokens & code

CSS

--color: #339bb3;
/* rgb */ color: rgb(51, 155, 179);
/* oklch */ color: oklch(64.1% 0.099 216.5);

Tailwind

colors: {
  custom: {
    50: '#7cb8c9',
    500: '#339bb3',
    950: '#000000',
  },
}

SCSS

$custom: #339bb3;
$custom-light: #7cb8c9;
$custom-dark: #000000;

JSON

{
  "hex": "#339bb3",
  "rgb": {
    "r": 51,
    "g": 155,
    "b": 179
  },
  "hsl": {
    "h": 191.25,
    "s": 55.652,
    "l": 45.098
  },
  "oklch": {
    "l": 0.64096,
    "c": 0.09865,
    "h": 216.5
  },
  "luminance": 0.27401
}

Semantic roles & 50–950 ramp

primary

#339BB3

secondary

#C68A7C

accent

#6549DF

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #339BB3

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

Preview Lab → · Contrast checker → · Palette generator →