#339CB3#339CB3

#339CB3 is a light, moderate cyan. Relative luminance 0.277; OKLCH L 64.3% C 0.099 H 215.5°. Best body text is #000000 at 6.55:1 contrast (WCAG AA passes).

Color values

HEX	#339CB3
RGB	rgb(51, 156, 179)
HSL	hsl(191, 56%, 45%)
HSV	hsv(191, 72%, 70%)
CMYK	cmyk(71.5%, 12.8%, 0%, 29.8%)
CIE-LAB	lab(59.65, -21.95, -20.58)
CIE-LCH	lch(59.65, 30.09, 223.16°)
OKLab	oklab(64.34% -0.0803 -0.0573)
OKLCH	oklch(64.34% 0.099 215.5)
XYZ	xyz(21.3870, 27.7329, 46.8649)
Luminance	0.2773 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#339CB3 #B34A33

analogous

#33B38A #339CB3 #335CB3

triadic

#339CB3 #B3339C #9CB333

tetradic

#339CB3 #8A33B3 #B34A33 #5CB333

square

#339CB3 #8A33B3 #B34A33 #5CB333

split-complementary

#339CB3 #B3335C #B38A33

monochromatic

#184954 #257283 #339CB3 #55B9CE #84CCDC

Accessibility & contrast

On white

3.21

#339CB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.55

#339CB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #339CB3

6.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##339CB3	#FFFFFF	#000000	##000000
##339CB3	1.00	3.21	6.55	6.55
#FFFFFF	3.21	1.00	21.00	21.00
#000000	6.55	21.00	1.00	1.00
##000000	6.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8C97B4

Deuteranopia (green-blind)

#7A8AB3

Tritanopia (blue-blind)

#00A4A3

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #339cb3;
/* rgb */ color: rgb(51, 156, 179);
/* oklch */ color: oklch(64.3% 0.099 215.5);

Tailwind

colors: {
  custom: {
    50: '#7cb9c9',
    500: '#339cb3',
    950: '#000000',
  },
}

SCSS

$custom: #339cb3;
$custom-light: #7cb9c9;
$custom-dark: #000000;

JSON

{
  "hex": "#339cb3",
  "rgb": {
    "r": 51,
    "g": 156,
    "b": 179
  },
  "hsl": {
    "h": 190.781,
    "s": 55.652,
    "l": 45.098
  },
  "oklch": {
    "l": 0.64342,
    "c": 0.09869,
    "h": 215.5
  },
  "luminance": 0.27735
}

Semantic roles & 50–950 ramp

primary

#339CB3

secondary

#C6897C

accent

#6449DF

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #339CB3

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

Preview Lab → · Contrast checker → · Palette generator →