#309BB1#309BB1

#309BB1 is a light, moderate cyan. Relative luminance 0.272; OKLCH L 63.9% C 0.099 H 214.6°. Best body text is #000000 at 6.45:1 contrast (WCAG AA passes).

Color values

HEX	#309BB1
RGB	rgb(48, 155, 177)
HSL	hsl(190, 57%, 44%)
HSV	hsv(190, 73%, 69%)
CMYK	cmyk(72.9%, 12.4%, 0%, 30.6%)
CIE-LAB	lab(59.20, -22.47, -20.14)
CIE-LCH	lch(59.20, 30.18, 221.87°)
OKLab	oklab(63.94% -0.0815 -0.0561)
OKLCH	oklch(63.94% 0.099 214.6)
XYZ	xyz(20.8727, 27.2429, 45.7448)
Luminance	0.2725 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#309BB1 #B14630

analogous

#30B187 #309BB1 #305AB1

triadic

#309BB1 #B1309B #9BB130

tetradic

#309BB1 #8730B1 #B14630 #5AB130

square

#309BB1 #8730B1 #B14630 #5AB130

split-complementary

#309BB1 #B1305A #B18730

monochromatic

#164751 #237181 #309BB1 #4FB9CF #7FCCDC

Accessibility & contrast

On white

3.26

#309BB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.45

#309BB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #309BB1

6.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##309BB1	#FFFFFF	#000000	##000000
##309BB1	1.00	3.26	6.45	6.45
#FFFFFF	3.26	1.00	21.00	21.00
#000000	6.45	21.00	1.00	1.00
##000000	6.45	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8B96B2

Deuteranopia (green-blind)

#7989B1

Tritanopia (blue-blind)

#00A3A2

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #309bb1;
/* rgb */ color: rgb(48, 155, 177);
/* oklch */ color: oklch(63.9% 0.099 214.6);

Tailwind

colors: {
  custom: {
    50: '#7bb8c8',
    500: '#309bb1',
    950: '#000000',
  },
}

SCSS

$custom: #309bb1;
$custom-light: #7bb8c8;
$custom-dark: #000000;

JSON

{
  "hex": "#309bb1",
  "rgb": {
    "r": 48,
    "g": 155,
    "b": 177
  },
  "hsl": {
    "h": 190.233,
    "s": 57.333,
    "l": 44.118
  },
  "oklch": {
    "l": 0.63937,
    "c": 0.09895,
    "h": 214.6
  },
  "luminance": 0.27245
}

Semantic roles & 50–950 ramp

primary

#309BB1

secondary

#C58578

accent

#6147E1

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #309BB1

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

Preview Lab → · Contrast checker → · Palette generator →