#3399B5#3399B5

#3399B5 is a light, moderate cyan. Relative luminance 0.268; OKLCH L 63.7% C 0.100 H 220.0°. Best body text is #000000 at 6.36:1 contrast (WCAG AA passes).

Color values

HEX	#3399B5
RGB	rgb(51, 153, 181)
HSL	hsl(193, 56%, 45%)
HSV	hsv(193, 72%, 71%)
CMYK	cmyk(71.8%, 15.5%, 0%, 29%)
CIE-LAB	lab(58.81, -19.73, -23.00)
CIE-LCH	lch(58.81, 30.30, 229.38°)
OKLab	oklab(63.69% -0.0765 -0.0642)
OKLCH	oklch(63.69% 0.1 220)
XYZ	xyz(21.0935, 26.8200, 47.7722)
Luminance	0.2682 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3399B5 #B54F33

analogous

#33B590 #3399B5 #3358B5

triadic

#3399B5 #B53399 #99B533

tetradic

#3399B5 #9033B5 #B54F33 #58B533

square

#3399B5 #9033B5 #B54F33 #58B533

split-complementary

#3399B5 #B53358 #B59033

monochromatic

#184856 #267185 #3399B5 #56B5CF #86CADD

Accessibility & contrast

On white

3.30

#3399B5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.36

#3399B5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3399B5

6.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3399B5	#FFFFFF	#000000	##000000
##3399B5	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)

#8895B6

Deuteranopia (green-blind)

#7688B5

Tritanopia (blue-blind)

#00A2A2

Achromatopsia (no color)

#8D8D8D

Design tokens & code

CSS

--color: #3399b5;
/* rgb */ color: rgb(51, 153, 181);
/* oklch */ color: oklch(63.7% 0.100 220.0);

Tailwind

colors: {
  custom: {
    50: '#7cb7cb',
    500: '#3399b5',
    950: '#000000',
  },
}

SCSS

$custom: #3399b5;
$custom-light: #7cb7cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3399b5",
  "rgb": {
    "r": 51,
    "g": 153,
    "b": 181
  },
  "hsl": {
    "h": 192.923,
    "s": 56.034,
    "l": 45.49
  },
  "oklch": {
    "l": 0.63692,
    "c": 0.09986,
    "h": 220
  },
  "luminance": 0.26822
}

Semantic roles & 50–950 ramp

primary

#3399B5

secondary

#C68D7D

accent

#6948DF

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #3399B5

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

Preview Lab → · Contrast checker → · Palette generator →