#309AB2#309AB2

#309AB2 is a light, moderate cyan. Relative luminance 0.270; OKLCH L 63.7% C 0.099 H 216.3°. Best body text is #000000 at 6.39:1 contrast (WCAG AA passes).

Color values

HEX	#309AB2
RGB	rgb(48, 154, 178)
HSL	hsl(191, 58%, 44%)
HSV	hsv(191, 73%, 70%)
CMYK	cmyk(73%, 13.5%, 0%, 30.2%)
CIE-LAB	lab(58.93, -21.63, -21.12)
CIE-LCH	lch(58.93, 30.23, 224.31°)
OKLab	oklab(63.73% -0.0801 -0.0589)
OKLCH	oklch(63.73% 0.099 216.3)
XYZ	xyz(20.8070, 26.9515, 46.2164)
Luminance	0.2695 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#309AB2 #B24830

analogous

#30B289 #309AB2 #3059B2

triadic

#309AB2 #B2309A #9AB230

tetradic

#309AB2 #8930B2 #B24830 #59B230

square

#309AB2 #8930B2 #B24830 #59B230

split-complementary

#309AB2 #B23059 #B28930

monochromatic

#164752 #237082 #309AB2 #50B8D0 #80CCDD

Accessibility & contrast

On white

3.29

#309AB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.39

#309AB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #309AB2

6.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##309AB2	#FFFFFF	#000000	##000000
##309AB2	1.00	3.29	6.39	6.39
#FFFFFF	3.29	1.00	21.00	21.00
#000000	6.39	21.00	1.00	1.00
##000000	6.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8A95B3

Deuteranopia (green-blind)

#7888B2

Tritanopia (blue-blind)

#00A3A1

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #309ab2;
/* rgb */ color: rgb(48, 154, 178);
/* oklch */ color: oklch(63.7% 0.099 216.3);

Tailwind

colors: {
  custom: {
    50: '#7bb8c9',
    500: '#309ab2',
    950: '#000000',
  },
}

SCSS

$custom: #309ab2;
$custom-light: #7bb8c9;
$custom-dark: #000000;

JSON

{
  "hex": "#309ab2",
  "rgb": {
    "r": 48,
    "g": 154,
    "b": 178
  },
  "hsl": {
    "h": 191.077,
    "s": 57.522,
    "l": 44.314
  },
  "oklch": {
    "l": 0.63732,
    "c": 0.0994,
    "h": 216.3
  },
  "luminance": 0.26954
}

Semantic roles & 50–950 ramp

primary

#309AB2

secondary

#C68678

accent

#6347E1

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #309AB2

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

Preview Lab → · Contrast checker → · Palette generator →