#309EB8#309EB8

#309EB8 is a light, moderate cyan. Relative luminance 0.285; OKLCH L 65.0% C 0.103 H 217.3°. Best body text is #000000 at 6.71:1 contrast (WCAG AA passes).

Color values

HEX	#309EB8
RGB	rgb(48, 158, 184)
HSL	hsl(191, 59%, 45%)
HSV	hsv(191, 74%, 72%)
CMYK	cmyk(73.9%, 14.1%, 0%, 27.8%)
CIE-LAB	lab(60.37, -21.77, -22.29)
CIE-LCH	lch(60.37, 31.16, 225.69°)
OKLab	oklab(64.97% -0.0817 -0.0622)
OKLCH	oklch(64.97% 0.103 217.3)
XYZ	xyz(22.0939, 28.5402, 49.6825)
Luminance	0.2854 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#309EB8 #B84A30

analogous

#30B88E #309EB8 #305AB8

triadic

#309EB8 #B8309E #9EB830

tetradic

#309EB8 #8E30B8 #B84A30 #5AB830

square

#309EB8 #8E30B8 #B84A30 #5AB830

split-complementary

#309EB8 #B8305A #B88E30

monochromatic

#174B57 #237487 #309EB8 #53BAD2 #84CDDF

Accessibility & contrast

On white

3.13

#309EB8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.71

#309EB8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #309EB8

6.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##309EB8	#FFFFFF	#000000	##000000
##309EB8	1.00	3.13	6.71	6.71
#FFFFFF	3.13	1.00	21.00	21.00
#000000	6.71	21.00	1.00	1.00
##000000	6.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8D99B9

Deuteranopia (green-blind)

#7A8CB8

Tritanopia (blue-blind)

#00A7A6

Achromatopsia (no color)

#929292

Design tokens & code

CSS

--color: #309eb8;
/* rgb */ color: rgb(48, 158, 184);
/* oklch */ color: oklch(65.0% 0.103 217.3);

Tailwind

colors: {
  custom: {
    50: '#7cbbcd',
    500: '#309eb8',
    950: '#000000',
  },
}

SCSS

$custom: #309eb8;
$custom-light: #7cbbcd;
$custom-dark: #000000;

JSON

{
  "hex": "#309eb8",
  "rgb": {
    "r": 48,
    "g": 158,
    "b": 184
  },
  "hsl": {
    "h": 191.471,
    "s": 58.621,
    "l": 45.49
  },
  "oklch": {
    "l": 0.64968,
    "c": 0.10268,
    "h": 217.3
  },
  "luminance": 0.28543
}

Semantic roles & 50–950 ramp

primary

#309EB8

secondary

#C88A7C

accent

#6446E2

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #309EB8

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

Preview Lab → · Contrast checker → · Palette generator →