#309EBB#309EBB

#309EBB is a light, moderate cyan. Relative luminance 0.287; OKLCH L 65.1% C 0.104 H 219.6°. Best body text is #000000 at 6.73:1 contrast (WCAG AA passes).

Color values

HEX	#309EBB
RGB	rgb(48, 158, 187)
HSL	hsl(193, 59%, 46%)
HSV	hsv(193, 74%, 73%)
CMYK	cmyk(74.3%, 15.5%, 0%, 26.7%)
CIE-LAB	lab(60.49, -20.79, -23.81)
CIE-LCH	lch(60.49, 31.61, 228.88°)
OKLab	oklab(65.1% -0.0805 -0.0665)
OKLCH	oklch(65.1% 0.104 219.6)
XYZ	xyz(22.4117, 28.6673, 51.3562)
Luminance	0.2867 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#309EBB #BB4D30

analogous

#30BB92 #309EBB #3058BB

triadic

#309EBB #BB309E #9EBB30

tetradic

#309EBB #9230BB #BB4D30 #58BB30

square

#309EBB #9230BB #BB4D30 #58BB30

split-complementary

#309EBB #BB3058 #BB9230

monochromatic

#174C5A #23758A #309EBB #55B9D3 #86CDE0

Accessibility & contrast

On white

3.12

#309EBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.73

#309EBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #309EBB

6.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##309EBB	#FFFFFF	#000000	##000000
##309EBB	1.00	3.12	6.73	6.73
#FFFFFF	3.12	1.00	21.00	21.00
#000000	6.73	21.00	1.00	1.00
##000000	6.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8C9ABD

Deuteranopia (green-blind)

#798CBB

Tritanopia (blue-blind)

#00A8A7

Achromatopsia (no color)

#929292

Design tokens & code

CSS

--color: #309ebb;
/* rgb */ color: rgb(48, 158, 187);
/* oklch */ color: oklch(65.1% 0.104 219.6);

Tailwind

colors: {
  custom: {
    50: '#7dbacf',
    500: '#309ebb',
    950: '#000000',
  },
}

SCSS

$custom: #309ebb;
$custom-light: #7dbacf;
$custom-dark: #000000;

JSON

{
  "hex": "#309ebb",
  "rgb": {
    "r": 48,
    "g": 158,
    "b": 187
  },
  "hsl": {
    "h": 192.518,
    "s": 59.149,
    "l": 46.078
  },
  "oklch": {
    "l": 0.65097,
    "c": 0.10442,
    "h": 219.6
  },
  "luminance": 0.2867
}

Semantic roles & 50–950 ramp

primary

#309EBB

secondary

#C98D7D

accent

#6645E2

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #309EBB

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

Preview Lab → · Contrast checker → · Palette generator →