#309BBC#309BBC

#309BBC is a light, moderate cyan. Relative luminance 0.277; OKLCH L 64.4% C 0.105 H 223.0°. Best body text is #000000 at 6.54:1 contrast (WCAG AA passes).

Color values

HEX	#309BBC
RGB	rgb(48, 155, 188)
HSL	hsl(194, 59%, 46%)
HSV	hsv(194, 74%, 74%)
CMYK	cmyk(74.5%, 17.6%, 0%, 26.3%)
CIE-LAB	lab(59.62, -18.87, -25.71)
CIE-LCH	lch(59.62, 31.89, 233.72°)
OKLab	oklab(64.41% -0.0771 -0.072)
OKLCH	oklch(64.41% 0.105 223)
XYZ	xyz(22.0136, 27.6993, 51.7535)
Luminance	0.2770 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#309BBC #BC5130

analogous

#30BC97 #309BBC #3055BC

triadic

#309BBC #BC309B #9BBC30

tetradic

#309BBC #9730BC #BC5130 #55BC30

square

#309BBC #9730BC #BC5130 #55BC30

split-complementary

#309BBC #BC3055 #BC9730

monochromatic

#174B5A #24738B #309BBC #55B6D4 #86CBE0

Accessibility & contrast

On white

3.21

#309BBC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.54

#309BBC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #309BBC

6.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##309BBC	#FFFFFF	#000000	##000000
##309BBC	1.00	3.21	6.54	6.54
#FFFFFF	3.21	1.00	21.00	21.00
#000000	6.54	21.00	1.00	1.00
##000000	6.54	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8897BE

Deuteranopia (green-blind)

#758ABC

Tritanopia (blue-blind)

#00A5A6

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #309bbc;
/* rgb */ color: rgb(48, 155, 188);
/* oklch */ color: oklch(64.4% 0.105 223.0);

Tailwind

colors: {
  custom: {
    50: '#7db8d0',
    500: '#309bbc',
    950: '#000000',
  },
}

SCSS

$custom: #309bbc;
$custom-light: #7db8d0;
$custom-dark: #000000;

JSON

{
  "hex": "#309bbc",
  "rgb": {
    "r": 48,
    "g": 155,
    "b": 188
  },
  "hsl": {
    "h": 194.143,
    "s": 59.322,
    "l": 46.275
  },
  "oklch": {
    "l": 0.64411,
    "c": 0.10549,
    "h": 223
  },
  "luminance": 0.27702
}

Semantic roles & 50–950 ramp

primary

#309BBC

secondary

#CA907E

accent

#6A45E3

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0B1114

muted

#7C8082

Preview Lab

Preview with #309BBC

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

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