#309BBF#309BBF

#309BBF is a light, moderate cyan. Relative luminance 0.278; OKLCH L 64.5% C 0.108 H 225.1°. Best body text is #000000 at 6.57:1 contrast (WCAG AA passes).

Color values

HEX	#309BBF
RGB	rgb(48, 155, 191)
HSL	hsl(195, 60%, 47%)
HSV	hsv(195, 75%, 75%)
CMYK	cmyk(74.9%, 18.8%, 0%, 25.1%)
CIE-LAB	lab(59.73, -17.87, -27.22)
CIE-LCH	lch(59.73, 32.56, 236.71°)
OKLab	oklab(64.55% -0.076 -0.0763)
OKLCH	oklch(64.55% 0.108 225.1)
XYZ	xyz(22.3404, 27.8300, 53.4744)
Luminance	0.2783 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#309BBF #BF5430

analogous

#30BF9C #309BBF #3053BF

triadic

#309BBF #BF309B #9BBF30

tetradic

#309BBF #9C30BF #BF5430 #53BF30

square

#309BBF #9C30BF #BF5430 #53BF30

split-complementary

#309BBF #BF3053 #BF9C30

monochromatic

#174C5D #24738E #309BBF #57B5D5 #88CBE1

Accessibility & contrast

On white

3.20

#309BBF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.57

#309BBF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #309BBF

6.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##309BBF	#FFFFFF	#000000	##000000
##309BBF	1.00	3.20	6.57	6.57
#FFFFFF	3.20	1.00	21.00	21.00
#000000	6.57	21.00	1.00	1.00
##000000	6.57	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8798C1

Deuteranopia (green-blind)

#748ABF

Tritanopia (blue-blind)

#00A6A7

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #309bbf;
/* rgb */ color: rgb(48, 155, 191);
/* oklch */ color: oklch(64.5% 0.108 225.1);

Tailwind

colors: {
  custom: {
    50: '#7db8d2',
    500: '#309bbf',
    950: '#000000',
  },
}

SCSS

$custom: #309bbf;
$custom-light: #7db8d2;
$custom-dark: #000000;

JSON

{
  "hex": "#309bbf",
  "rgb": {
    "r": 48,
    "g": 155,
    "b": 191
  },
  "hsl": {
    "h": 195.105,
    "s": 59.833,
    "l": 46.863
  },
  "oklch": {
    "l": 0.64545,
    "c": 0.10766,
    "h": 225.1
  },
  "luminance": 0.27833
}

Semantic roles & 50–950 ramp

primary

#309BBF

secondary

#CB9380

accent

#6D45E3

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0B1114

muted

#7C8082

Preview Lab

Preview with #309BBF

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

Preview Lab → · Contrast checker → · Palette generator →