#309DBB#309DBB

#309DBB is a light, moderate cyan. Relative luminance 0.283; OKLCH L 64.9% C 0.105 H 220.5°. Best body text is #000000 at 6.67:1 contrast (WCAG AA passes).

Color values

HEX	#309DBB
RGB	rgb(48, 157, 187)
HSL	hsl(193, 59%, 46%)
HSV	hsv(193, 74%, 73%)
CMYK	cmyk(74.3%, 16%, 0%, 26.7%)
CIE-LAB	lab(60.18, -20.26, -24.27)
CIE-LCH	lch(60.18, 31.62, 230.15°)
OKLab	oklab(64.85% -0.0795 -0.0679)
OKLCH	oklch(64.85% 0.105 220.5)
XYZ	xyz(22.2418, 28.3275, 51.2996)
Luminance	0.2833 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#309DBB #BB4E30

analogous

#30BB93 #309DBB #3057BB

triadic

#309DBB #BB309D #9DBB30

tetradic

#309DBB #9330BB #BB4E30 #57BB30

square

#309DBB #9330BB #BB4E30 #57BB30

split-complementary

#309DBB #BB3057 #BB9330

monochromatic

#174B5A #23748A #309DBB #55B8D3 #86CCE0

Accessibility & contrast

On white

3.15

#309DBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.67

#309DBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #309DBB

6.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##309DBB	#FFFFFF	#000000	##000000
##309DBB	1.00	3.15	6.67	6.67
#FFFFFF	3.15	1.00	21.00	21.00
#000000	6.67	21.00	1.00	1.00
##000000	6.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8B99BD

Deuteranopia (green-blind)

#788BBB

Tritanopia (blue-blind)

#00A7A7

Achromatopsia (no color)

#919191

Design tokens & code

CSS

--color: #309dbb;
/* rgb */ color: rgb(48, 157, 187);
/* oklch */ color: oklch(64.9% 0.105 220.5);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#309dbb",
  "rgb": {
    "r": 48,
    "g": 157,
    "b": 187
  },
  "hsl": {
    "h": 192.95,
    "s": 59.149,
    "l": 46.078
  },
  "oklch": {
    "l": 0.64853,
    "c": 0.10452,
    "h": 220.5
  },
  "luminance": 0.2833
}

Semantic roles & 50–950 ramp

primary

#309DBB

secondary

#C98E7D

accent

#6745E2

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #309DBB

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

Preview Lab → · Contrast checker → · Palette generator →