#309EB5#309EB5

#309EB5 is a light, moderate cyan. Relative luminance 0.284; OKLCH L 64.8% C 0.101 H 214.9°. Best body text is #000000 at 6.68:1 contrast (WCAG AA passes).

Color values

HEX	#309EB5
RGB	rgb(48, 158, 181)
HSL	hsl(190, 58%, 45%)
HSV	hsv(190, 73%, 71%)
CMYK	cmyk(73.5%, 12.7%, 0%, 29%)
CIE-LAB	lab(60.26, -22.74, -20.77)
CIE-LCH	lch(60.26, 30.80, 222.42°)
OKLab	oklab(64.84% -0.0829 -0.0579)
OKLCH	oklch(64.84% 0.101 214.9)
XYZ	xyz(21.7827, 28.4157, 48.0439)
Luminance	0.2842 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#309EB5 #B54730

analogous

#30B58A #309EB5 #305BB5

triadic

#309EB5 #B5309E #9EB530

tetradic

#309EB5 #8A30B5 #B54730 #5BB530

square

#309EB5 #8A30B5 #B54730 #5BB530

split-complementary

#309EB5 #B5305B #B58A30

monochromatic

#164A54 #237485 #309EB5 #51BBD1 #82CEDE

Accessibility & contrast

On white

3.14

#309EB5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.68

#309EB5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #309EB5

6.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##309EB5	#FFFFFF	#000000	##000000
##309EB5	1.00	3.14	6.68	6.68
#FFFFFF	3.14	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)

#8E99B6

Deuteranopia (green-blind)

#7B8BB5

Tritanopia (blue-blind)

#00A7A5

Achromatopsia (no color)

#919191

Design tokens & code

CSS

--color: #309eb5;
/* rgb */ color: rgb(48, 158, 181);
/* oklch */ color: oklch(64.8% 0.101 214.9);

Tailwind

colors: {
  custom: {
    50: '#7cbbcb',
    500: '#309eb5',
    950: '#000000',
  },
}

SCSS

$custom: #309eb5;
$custom-light: #7cbbcb;
$custom-dark: #000000;

JSON

{
  "hex": "#309eb5",
  "rgb": {
    "r": 48,
    "g": 158,
    "b": 181
  },
  "hsl": {
    "h": 190.376,
    "s": 58.079,
    "l": 44.902
  },
  "oklch": {
    "l": 0.64842,
    "c": 0.10111,
    "h": 214.9
  },
  "luminance": 0.28418
}

Semantic roles & 50–950 ramp

primary

#309EB5

secondary

#C7877A

accent

#6146E1

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #309EB5

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

Preview Lab → · Contrast checker → · Palette generator →