#309EB7#309EB7

#309EB7 is a light, moderate cyan. Relative luminance 0.285; OKLCH L 64.9% C 0.102 H 216.5°. Best body text is #000000 at 6.70:1 contrast (WCAG AA passes).

Color values

HEX	#309EB7
RGB	rgb(48, 158, 183)
HSL	hsl(191, 58%, 45%)
HSV	hsv(191, 74%, 72%)
CMYK	cmyk(73.8%, 13.7%, 0%, 28.2%)
CIE-LAB	lab(60.34, -22.09, -21.79)
CIE-LCH	lch(60.34, 31.03, 224.61°)
OKLab	oklab(64.93% -0.0821 -0.0608)
OKLCH	oklch(64.93% 0.102 216.5)
XYZ	xyz(21.9894, 28.4984, 49.1324)
Luminance	0.2850 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#309EB7 #B74930

analogous

#30B78C #309EB7 #305AB7

triadic

#309EB7 #B7309E #9EB730

tetradic

#309EB7 #8C30B7 #B74930 #5AB730

square

#309EB7 #8C30B7 #B74930 #5AB730

split-complementary

#309EB7 #B7305A #B78C30

monochromatic

#174A56 #237487 #309EB7 #52BAD2 #83CEDE

Accessibility & contrast

On white

3.13

#309EB7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.70

#309EB7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #309EB7

6.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##309EB7	#FFFFFF	#000000	##000000
##309EB7	1.00	3.13	6.70	6.70
#FFFFFF	3.13	1.00	21.00	21.00
#000000	6.70	21.00	1.00	1.00
##000000	6.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8D99B8

Deuteranopia (green-blind)

#7B8CB7

Tritanopia (blue-blind)

#00A7A6

Achromatopsia (no color)

#919191

Design tokens & code

CSS

--color: #309eb7;
/* rgb */ color: rgb(48, 158, 183);
/* oklch */ color: oklch(64.9% 0.102 216.5);

Tailwind

colors: {
  custom: {
    50: '#7cbbcc',
    500: '#309eb7',
    950: '#000000',
  },
}

SCSS

$custom: #309eb7;
$custom-light: #7cbbcc;
$custom-dark: #000000;

JSON

{
  "hex": "#309eb7",
  "rgb": {
    "r": 48,
    "g": 158,
    "b": 183
  },
  "hsl": {
    "h": 191.111,
    "s": 58.442,
    "l": 45.294
  },
  "oklch": {
    "l": 0.64926,
    "c": 0.10213,
    "h": 216.5
  },
  "luminance": 0.28501
}

Semantic roles & 50–950 ramp

primary

#309EB7

secondary

#C8897B

accent

#6346E2

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #309EB7

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

Preview Lab → · Contrast checker → · Palette generator →