#309BBD#309BBD

#309BBD is a light, moderate cyan. Relative luminance 0.277; OKLCH L 64.5% C 0.106 H 223.7°. Best body text is #000000 at 6.55:1 contrast (WCAG AA passes).

Color values

HEX	#309BBD
RGB	rgb(48, 155, 189)
HSL	hsl(194, 59%, 46%)
HSV	hsv(194, 75%, 74%)
CMYK	cmyk(74.6%, 18%, 0%, 25.9%)
CIE-LAB	lab(59.66, -18.54, -26.21)
CIE-LCH	lch(59.66, 32.11, 234.73°)
OKLab	oklab(64.46% -0.0767 -0.0734)
OKLCH	oklch(64.46% 0.106 223.7)
XYZ	xyz(22.1218, 27.7426, 52.3232)
Luminance	0.2774 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#309BBD #BD5230

analogous

#30BD99 #309BBD #3055BD

triadic

#309BBD #BD309B #9BBD30

tetradic

#309BBD #9930BD #BD5230 #55BD30

square

#309BBD #9930BD #BD5230 #55BD30

split-complementary

#309BBD #BD3055 #BD9930

monochromatic

#174B5B #24738C #309BBD #56B6D4 #87CBE0

Accessibility & contrast

On white

3.21

#309BBD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.55

#309BBD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #309BBD

6.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##309BBD	#FFFFFF	#000000	##000000
##309BBD	1.00	3.21	6.55	6.55
#FFFFFF	3.21	1.00	21.00	21.00
#000000	6.55	21.00	1.00	1.00
##000000	6.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8897BF

Deuteranopia (green-blind)

#758ABD

Tritanopia (blue-blind)

#00A5A6

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #309bbd;
/* rgb */ color: rgb(48, 155, 189);
/* oklch */ color: oklch(64.5% 0.106 223.7);

Tailwind

colors: {
  custom: {
    50: '#7db8d1',
    500: '#309bbd',
    950: '#000000',
  },
}

SCSS

$custom: #309bbd;
$custom-light: #7db8d1;
$custom-dark: #000000;

JSON

{
  "hex": "#309bbd",
  "rgb": {
    "r": 48,
    "g": 155,
    "b": 189
  },
  "hsl": {
    "h": 194.468,
    "s": 59.494,
    "l": 46.471
  },
  "oklch": {
    "l": 0.64455,
    "c": 0.1062,
    "h": 223.7
  },
  "luminance": 0.27745
}

Semantic roles & 50–950 ramp

primary

#309BBD

secondary

#CA917F

accent

#6B45E3

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0B1114

muted

#7C8082

Preview Lab

Preview with #309BBD

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

Preview Lab → · Contrast checker → · Palette generator →