#309AB8#309AB8

#309AB8 is a light, moderate cyan. Relative luminance 0.272; OKLCH L 64.0% C 0.103 H 221.0°. Best body text is #000000 at 6.44:1 contrast (WCAG AA passes).

Color values

HEX	#309AB8
RGB	rgb(48, 154, 184)
HSL	hsl(193, 59%, 45%)
HSV	hsv(193, 74%, 72%)
CMYK	cmyk(73.9%, 16.3%, 0%, 27.8%)
CIE-LAB	lab(59.16, -19.67, -24.16)
CIE-LCH	lch(59.16, 31.15, 230.86°)
OKLab	oklab(63.99% -0.0777 -0.0675)
OKLCH	oklch(63.99% 0.103 221)
XYZ	xyz(21.4227, 27.1977, 49.4587)
Luminance	0.2720 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#309AB8 #B84E30

analogous

#30B892 #309AB8 #3056B8

triadic

#309AB8 #B8309A #9AB830

tetradic

#309AB8 #9230B8 #B84E30 #56B830

square

#309AB8 #9230B8 #B84E30 #56B830

split-complementary

#309AB8 #B83056 #B89230

monochromatic

#174957 #237187 #309AB8 #53B6D2 #84CBDF

Accessibility & contrast

On white

3.26

#309AB8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.44

#309AB8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #309AB8

6.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##309AB8	#FFFFFF	#000000	##000000
##309AB8	1.00	3.26	6.44	6.44
#FFFFFF	3.26	1.00	21.00	21.00
#000000	6.44	21.00	1.00	1.00
##000000	6.44	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8896BA

Deuteranopia (green-blind)

#7689B8

Tritanopia (blue-blind)

#00A4A4

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #309ab8;
/* rgb */ color: rgb(48, 154, 184);
/* oklch */ color: oklch(64.0% 0.103 221.0);

Tailwind

colors: {
  custom: {
    50: '#7cb8cd',
    500: '#309ab8',
    950: '#000000',
  },
}

SCSS

$custom: #309ab8;
$custom-light: #7cb8cd;
$custom-dark: #000000;

JSON

{
  "hex": "#309ab8",
  "rgb": {
    "r": 48,
    "g": 154,
    "b": 184
  },
  "hsl": {
    "h": 193.235,
    "s": 58.621,
    "l": 45.49
  },
  "oklch": {
    "l": 0.63991,
    "c": 0.10295,
    "h": 221
  },
  "luminance": 0.272
}

Semantic roles & 50–950 ramp

primary

#309AB8

secondary

#C88D7C

accent

#6846E2

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #309AB8

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

Preview Lab → · Contrast checker → · Palette generator →