#309EB4#309EB4

#309EB4 is a light, moderate cyan. Relative luminance 0.284; OKLCH L 64.8% C 0.101 H 214.1°. Best body text is #000000 at 6.68:1 contrast (WCAG AA passes).

Color values

HEX	#309EB4
RGB	rgb(48, 158, 180)
HSL	hsl(190, 58%, 45%)
HSV	hsv(190, 73%, 71%)
CMYK	cmyk(73.3%, 12.2%, 0%, 29.4%)
CIE-LAB	lab(60.23, -23.06, -20.27)
CIE-LCH	lch(60.23, 30.70, 221.31°)
OKLab	oklab(64.8% -0.0833 -0.0565)
OKLCH	oklch(64.8% 0.101 214.1)
XYZ	xyz(21.6805, 28.3748, 47.5054)
Luminance	0.2838 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#309EB4 #B44630

analogous

#30B488 #309EB4 #305CB4

triadic

#309EB4 #B4309E #9EB430

tetradic

#309EB4 #8830B4 #B44630 #5CB430

square

#309EB4 #8830B4 #B44630 #5CB430

split-complementary

#309EB4 #B4305C #B48830

monochromatic

#164953 #237484 #309EB4 #51BBD1 #81CEDD

Accessibility & contrast

On white

3.15

#309EB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.68

#309EB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #309EB4

6.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##309EB4	#FFFFFF	#000000	##000000
##309EB4	1.00	3.15	6.68	6.68
#FFFFFF	3.15	1.00	21.00	21.00
#000000	6.68	21.00	1.00	1.00
##000000	6.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8E99B5

Deuteranopia (green-blind)

#7C8BB4

Tritanopia (blue-blind)

#00A6A5

Achromatopsia (no color)

#919191

Design tokens & code

CSS

--color: #309eb4;
/* rgb */ color: rgb(48, 158, 180);
/* oklch */ color: oklch(64.8% 0.101 214.1);

Tailwind

colors: {
  custom: {
    50: '#7cbbca',
    500: '#309eb4',
    950: '#000000',
  },
}

SCSS

$custom: #309eb4;
$custom-light: #7cbbca;
$custom-dark: #000000;

JSON

{
  "hex": "#309eb4",
  "rgb": {
    "r": 48,
    "g": 158,
    "b": 180
  },
  "hsl": {
    "h": 190,
    "s": 57.895,
    "l": 44.706
  },
  "oklch": {
    "l": 0.648,
    "c": 0.10063,
    "h": 214.1
  },
  "luminance": 0.28377
}

Semantic roles & 50–950 ramp

primary

#309EB4

secondary

#C68679

accent

#6047E1

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #309EB4

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

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