#309CB7#309CB7

#309CB7 is a light, moderate cyan. Relative luminance 0.278; OKLCH L 64.4% C 0.102 H 218.4°. Best body text is #000000 at 6.56:1 contrast (WCAG AA passes).

Color values

HEX	#309CB7
RGB	rgb(48, 156, 183)
HSL	hsl(192, 58%, 45%)
HSV	hsv(192, 74%, 72%)
CMYK	cmyk(73.8%, 14.8%, 0%, 28.2%)
CIE-LAB	lab(59.73, -21.05, -22.72)
CIE-LCH	lch(59.73, 30.97, 227.19°)
OKLab	oklab(64.44% -0.0801 -0.0635)
OKLCH	oklch(64.44% 0.102 218.4)
XYZ	xyz(21.6510, 27.8217, 49.0196)
Luminance	0.2782 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#309CB7 #B74B30

analogous

#30B78E #309CB7 #3058B7

triadic

#309CB7 #B7309C #9CB730

tetradic

#309CB7 #8E30B7 #B74B30 #58B730

square

#309CB7 #8E30B7 #B74B30 #58B730

split-complementary

#309CB7 #B73058 #B78E30

monochromatic

#174956 #237387 #309CB7 #52B8D2 #83CCDE

Accessibility & contrast

On white

3.20

#309CB7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.56

#309CB7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #309CB7

6.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##309CB7	#FFFFFF	#000000	##000000
##309CB7	1.00	3.20	6.56	6.56
#FFFFFF	3.20	1.00	21.00	21.00
#000000	6.56	21.00	1.00	1.00
##000000	6.56	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8B98B8

Deuteranopia (green-blind)

#788AB7

Tritanopia (blue-blind)

#00A5A5

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #309cb7;
/* rgb */ color: rgb(48, 156, 183);
/* oklch */ color: oklch(64.4% 0.102 218.4);

Tailwind

colors: {
  custom: {
    50: '#7cb9cc',
    500: '#309cb7',
    950: '#000000',
  },
}

SCSS

$custom: #309cb7;
$custom-light: #7cb9cc;
$custom-dark: #000000;

JSON

{
  "hex": "#309cb7",
  "rgb": {
    "r": 48,
    "g": 156,
    "b": 183
  },
  "hsl": {
    "h": 192,
    "s": 58.442,
    "l": 45.294
  },
  "oklch": {
    "l": 0.64436,
    "c": 0.10216,
    "h": 218.4
  },
  "luminance": 0.27824
}

Semantic roles & 50–950 ramp

primary

#309CB7

secondary

#C88A7B

accent

#6546E2

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #309CB7

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

Preview Lab → · Contrast checker → · Palette generator →