#309CBC#309CBC

#309CBC is a light, moderate cyan. Relative luminance 0.280; OKLCH L 64.7% C 0.105 H 222.1°. Best body text is #000000 at 6.61:1 contrast (WCAG AA passes).

Color values

HEX	#309CBC
RGB	rgb(48, 156, 188)
HSL	hsl(194, 59%, 46%)
HSV	hsv(194, 74%, 74%)
CMYK	cmyk(74.5%, 17%, 0%, 26.3%)
CIE-LAB	lab(59.92, -19.40, -25.24)
CIE-LCH	lch(59.92, 31.84, 232.45°)
OKLab	oklab(64.65% -0.0781 -0.0706)
OKLCH	oklch(64.65% 0.105 222.1)
XYZ	xyz(22.1807, 28.0335, 51.8092)
Luminance	0.2804 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#309CBC #BC5030

analogous

#30BC96 #309CBC #3056BC

triadic

#309CBC #BC309C #9CBC30

tetradic

#309CBC #9630BC #BC5030 #56BC30

square

#309CBC #9630BC #BC5030 #56BC30

split-complementary

#309CBC #BC3056 #BC9630

monochromatic

#174B5A #24748B #309CBC #55B7D4 #86CCE0

Accessibility & contrast

On white

3.18

#309CBC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.61

#309CBC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #309CBC

6.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##309CBC	#FFFFFF	#000000	##000000
##309CBC	1.00	3.18	6.61	6.61
#FFFFFF	3.18	1.00	21.00	21.00
#000000	6.61	21.00	1.00	1.00
##000000	6.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8998BE

Deuteranopia (green-blind)

#768ABC

Tritanopia (blue-blind)

#00A6A6

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #309cbc;
/* rgb */ color: rgb(48, 156, 188);
/* oklch */ color: oklch(64.7% 0.105 222.1);

Tailwind

colors: {
  custom: {
    50: '#7db9d0',
    500: '#309cbc',
    950: '#000000',
  },
}

SCSS

$custom: #309cbc;
$custom-light: #7db9d0;
$custom-dark: #000000;

JSON

{
  "hex": "#309cbc",
  "rgb": {
    "r": 48,
    "g": 156,
    "b": 188
  },
  "hsl": {
    "h": 193.714,
    "s": 59.322,
    "l": 46.275
  },
  "oklch": {
    "l": 0.64654,
    "c": 0.10531,
    "h": 222.1
  },
  "luminance": 0.28036
}

Semantic roles & 50–950 ramp

primary

#309CBC

secondary

#CA8F7E

accent

#6945E3

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0B1114

muted

#7C8082

Preview Lab

Preview with #309CBC

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

Preview Lab → · Contrast checker → · Palette generator →