#309DB7#309DB7

#309DB7 is a light, moderate cyan. Relative luminance 0.282; OKLCH L 64.7% C 0.102 H 217.5°. Best body text is #000000 at 6.63:1 contrast (WCAG AA passes).

Color values

HEX	#309DB7
RGB	rgb(48, 157, 183)
HSL	hsl(192, 58%, 45%)
HSV	hsv(192, 74%, 72%)
CMYK	cmyk(73.8%, 14.2%, 0%, 28.2%)
CIE-LAB	lab(60.03, -21.57, -22.25)
CIE-LCH	lch(60.03, 30.99, 225.89°)
OKLab	oklab(64.68% -0.0811 -0.0621)
OKLCH	oklch(64.68% 0.102 217.5)
XYZ	xyz(21.8195, 28.1586, 49.0758)
Luminance	0.2816 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#309DB7 #B74A30

analogous

#30B78E #309DB7 #3059B7

triadic

#309DB7 #B7309D #9DB730

tetradic

#309DB7 #8E30B7 #B74A30 #59B730

square

#309DB7 #8E30B7 #B74A30 #59B730

split-complementary

#309DB7 #B73059 #B78E30

monochromatic

#174A56 #237387 #309DB7 #52B9D2 #83CDDE

Accessibility & contrast

On white

3.17

#309DB7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.63

#309DB7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #309DB7

6.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##309DB7	#FFFFFF	#000000	##000000
##309DB7	1.00	3.17	6.63	6.63
#FFFFFF	3.17	1.00	21.00	21.00
#000000	6.63	21.00	1.00	1.00
##000000	6.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8C98B8

Deuteranopia (green-blind)

#7A8BB7

Tritanopia (blue-blind)

#00A6A5

Achromatopsia (no color)

#919191

Design tokens & code

CSS

--color: #309db7;
/* rgb */ color: rgb(48, 157, 183);
/* oklch */ color: oklch(64.7% 0.102 217.5);

Tailwind

colors: {
  custom: {
    50: '#7cbacc',
    500: '#309db7',
    950: '#000000',
  },
}

SCSS

$custom: #309db7;
$custom-light: #7cbacc;
$custom-dark: #000000;

JSON

{
  "hex": "#309db7",
  "rgb": {
    "r": 48,
    "g": 157,
    "b": 183
  },
  "hsl": {
    "h": 191.556,
    "s": 58.442,
    "l": 45.294
  },
  "oklch": {
    "l": 0.64681,
    "c": 0.10213,
    "h": 217.5
  },
  "luminance": 0.28161
}

Semantic roles & 50–950 ramp

primary

#309DB7

secondary

#C88A7B

accent

#6446E2

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #309DB7

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

Preview Lab → · Contrast checker → · Palette generator →