#309AB5#309AB5

#309AB5 is a light, moderate cyan. Relative luminance 0.271; OKLCH L 63.9% C 0.101 H 218.7°. Best body text is #000000 at 6.42:1 contrast (WCAG AA passes).

Color values

HEX	#309AB5
RGB	rgb(48, 154, 181)
HSL	hsl(192, 58%, 45%)
HSV	hsv(192, 73%, 71%)
CMYK	cmyk(73.5%, 14.9%, 0%, 29%)
CIE-LAB	lab(59.04, -20.65, -22.64)
CIE-LCH	lch(59.04, 30.65, 227.63°)
OKLab	oklab(63.86% -0.0789 -0.0632)
OKLCH	oklch(63.86% 0.101 218.7)
XYZ	xyz(21.1115, 27.0733, 47.8201)
Luminance	0.2708 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#309AB5 #B54B30

analogous

#30B58D #309AB5 #3058B5

triadic

#309AB5 #B5309A #9AB530

tetradic

#309AB5 #8D30B5 #B54B30 #58B530

square

#309AB5 #8D30B5 #B54B30 #58B530

split-complementary

#309AB5 #B53058 #B58D30

monochromatic

#164854 #237185 #309AB5 #51B7D1 #82CBDE

Accessibility & contrast

On white

3.27

#309AB5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.42

#309AB5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #309AB5

6.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##309AB5	#FFFFFF	#000000	##000000
##309AB5	1.00	3.27	6.42	6.42
#FFFFFF	3.27	1.00	21.00	21.00
#000000	6.42	21.00	1.00	1.00
##000000	6.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8996B6

Deuteranopia (green-blind)

#7788B5

Tritanopia (blue-blind)

#00A3A3

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #309ab5;
/* rgb */ color: rgb(48, 154, 181);
/* oklch */ color: oklch(63.9% 0.101 218.7);

Tailwind

colors: {
  custom: {
    50: '#7cb8cb',
    500: '#309ab5',
    950: '#000000',
  },
}

SCSS

$custom: #309ab5;
$custom-light: #7cb8cb;
$custom-dark: #000000;

JSON

{
  "hex": "#309ab5",
  "rgb": {
    "r": 48,
    "g": 154,
    "b": 181
  },
  "hsl": {
    "h": 192.18,
    "s": 58.079,
    "l": 44.902
  },
  "oklch": {
    "l": 0.6386,
    "c": 0.10109,
    "h": 218.7
  },
  "luminance": 0.27076
}

Semantic roles & 50–950 ramp

primary

#309AB5

secondary

#C78A7A

accent

#6646E1

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #309AB5

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

Preview Lab → · Contrast checker → · Palette generator →