#339DB4#339DB4

#339DB4 is a light, moderate cyan. Relative luminance 0.281; OKLCH L 64.6% C 0.099 H 215.4°. Best body text is #000000 at 6.62:1 contrast (WCAG AA passes).

Color values

HEX	#339DB4
RGB	rgb(51, 157, 180)
HSL	hsl(191, 56%, 45%)
HSV	hsv(191, 72%, 71%)
CMYK	cmyk(71.7%, 12.8%, 0%, 29.4%)
CIE-LAB	lab(59.99, -22.15, -20.62)
CIE-LCH	lch(59.99, 30.26, 222.96°)
OKLab	oklab(64.63% -0.0809 -0.0575)
OKLCH	oklch(64.63% 0.099 215.4)
XYZ	xyz(21.6570, 28.1105, 47.4557)
Luminance	0.2811 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#339DB4 #B44A33

analogous

#33B48B #339DB4 #335CB4

triadic

#339DB4 #B4339D #9DB433

tetradic

#339DB4 #8B33B4 #B44A33 #5CB433

square

#339DB4 #8B33B4 #B44A33 #5CB433

split-complementary

#339DB4 #B4335C #B48B33

monochromatic

#184A55 #257384 #339DB4 #55B9CF #85CDDC

Accessibility & contrast

On white

3.17

#339DB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.62

#339DB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #339DB4

6.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##339DB4	#FFFFFF	#000000	##000000
##339DB4	1.00	3.17	6.62	6.62
#FFFFFF	3.17	1.00	21.00	21.00
#000000	6.62	21.00	1.00	1.00
##000000	6.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8D98B5

Deuteranopia (green-blind)

#7B8BB4

Tritanopia (blue-blind)

#00A5A4

Achromatopsia (no color)

#919191

Design tokens & code

CSS

--color: #339db4;
/* rgb */ color: rgb(51, 157, 180);
/* oklch */ color: oklch(64.6% 0.099 215.4);

Tailwind

colors: {
  custom: {
    50: '#7dbaca',
    500: '#339db4',
    950: '#000000',
  },
}

SCSS

$custom: #339db4;
$custom-light: #7dbaca;
$custom-dark: #000000;

JSON

{
  "hex": "#339db4",
  "rgb": {
    "r": 51,
    "g": 157,
    "b": 180
  },
  "hsl": {
    "h": 190.698,
    "s": 55.844,
    "l": 45.294
  },
  "oklch": {
    "l": 0.64629,
    "c": 0.09926,
    "h": 215.4
  },
  "luminance": 0.28113
}

Semantic roles & 50–950 ramp

primary

#339DB4

secondary

#C68A7D

accent

#6349DF

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #339DB4

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

Preview Lab → · Contrast checker → · Palette generator →