#309CB3#309CB3

#309CB3 is a light, moderate cyan. Relative luminance 0.277; OKLCH L 64.3% C 0.100 H 215.2°. Best body text is #000000 at 6.53:1 contrast (WCAG AA passes).

Color values

HEX	#309CB3
RGB	rgb(48, 156, 179)
HSL	hsl(191, 58%, 45%)
HSV	hsv(191, 73%, 70%)
CMYK	cmyk(73.2%, 12.8%, 0%, 29.8%)
CIE-LAB	lab(59.58, -22.35, -20.69)
CIE-LCH	lch(59.58, 30.45, 222.80°)
OKLab	oklab(64.27% -0.0817 -0.0577)
OKLCH	oklch(64.27% 0.1 215.2)
XYZ	xyz(21.2406, 27.6575, 46.8581)
Luminance	0.2766 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#309CB3 #B34730

analogous

#30B388 #309CB3 #305BB3

triadic

#309CB3 #B3309C #9CB330

tetradic

#309CB3 #8830B3 #B34730 #5BB330

square

#309CB3 #8830B3 #B34730 #5BB330

split-complementary

#309CB3 #B3305B #B38830

monochromatic

#164852 #237283 #309CB3 #50BAD0 #80CDDD

Accessibility & contrast

On white

3.21

#309CB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.53

#309CB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #309CB3

6.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##309CB3	#FFFFFF	#000000	##000000
##309CB3	1.00	3.21	6.53	6.53
#FFFFFF	3.21	1.00	21.00	21.00
#000000	6.53	21.00	1.00	1.00
##000000	6.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8C97B4

Deuteranopia (green-blind)

#7A8AB3

Tritanopia (blue-blind)

#00A4A3

Achromatopsia (no color)

#8F8F8F

Design tokens & code

CSS

--color: #309cb3;
/* rgb */ color: rgb(48, 156, 179);
/* oklch */ color: oklch(64.3% 0.100 215.2);

Tailwind

colors: {
  custom: {
    50: '#7bb9c9',
    500: '#309cb3',
    950: '#000000',
  },
}

SCSS

$custom: #309cb3;
$custom-light: #7bb9c9;
$custom-dark: #000000;

JSON

{
  "hex": "#309cb3",
  "rgb": {
    "r": 48,
    "g": 156,
    "b": 179
  },
  "hsl": {
    "h": 190.534,
    "s": 57.709,
    "l": 44.51
  },
  "oklch": {
    "l": 0.64267,
    "c": 0.1,
    "h": 215.2
  },
  "luminance": 0.2766
}

Semantic roles & 50–950 ramp

primary

#309CB3

secondary

#C68679

accent

#6247E1

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #309CB3

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

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