#309CB2#309CB2

#309CB2 is a light, moderate cyan. Relative luminance 0.276; OKLCH L 64.2% C 0.100 H 214.4°. Best body text is #000000 at 6.52:1 contrast (WCAG AA passes).

Color values

HEX	#309CB2
RGB	rgb(48, 156, 178)
HSL	hsl(190, 58%, 44%)
HSV	hsv(190, 73%, 70%)
CMYK	cmyk(73%, 12.4%, 0%, 30.2%)
CIE-LAB	lab(59.54, -22.67, -20.18)
CIE-LCH	lch(59.54, 30.35, 221.68°)
OKLab	oklab(64.22% -0.0821 -0.0562)
OKLCH	oklch(64.22% 0.1 214.4)
XYZ	xyz(21.1399, 27.6172, 46.3274)
Luminance	0.2762 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#309CB2 #B24630

analogous

#30B287 #309CB2 #305BB2

triadic

#309CB2 #B2309C #9CB230

tetradic

#309CB2 #8730B2 #B24630 #5BB230

square

#309CB2 #8730B2 #B24630 #5BB230

split-complementary

#309CB2 #B2305B #B28730

monochromatic

#164852 #237282 #309CB2 #50BAD0 #80CDDD

Accessibility & contrast

On white

3.22

#309CB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.52

#309CB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #309CB2

6.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##309CB2	#FFFFFF	#000000	##000000
##309CB2	1.00	3.22	6.52	6.52
#FFFFFF	3.22	1.00	21.00	21.00
#000000	6.52	21.00	1.00	1.00
##000000	6.52	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8C97B3

Deuteranopia (green-blind)

#7A8AB2

Tritanopia (blue-blind)

#00A4A3

Achromatopsia (no color)

#8F8F8F

Design tokens & code

CSS

--color: #309cb2;
/* rgb */ color: rgb(48, 156, 178);
/* oklch */ color: oklch(64.2% 0.100 214.4);

Tailwind

colors: {
  custom: {
    50: '#7bb9c9',
    500: '#309cb2',
    950: '#000000',
  },
}

SCSS

$custom: #309cb2;
$custom-light: #7bb9c9;
$custom-dark: #000000;

JSON

{
  "hex": "#309cb2",
  "rgb": {
    "r": 48,
    "g": 156,
    "b": 178
  },
  "hsl": {
    "h": 190.154,
    "s": 57.522,
    "l": 44.314
  },
  "oklch": {
    "l": 0.64225,
    "c": 0.09951,
    "h": 214.4
  },
  "luminance": 0.2762
}

Semantic roles & 50–950 ramp

primary

#309CB2

secondary

#C68578

accent

#6147E1

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #309CB2

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

Preview Lab → · Contrast checker → · Palette generator →