#307B9D#307B9D

#307B9D is a mid, moderate cyan. Relative luminance 0.172; OKLCH L 55.1% C 0.090 H 231.3°. Best body text is #FFFFFF at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#307B9D
RGB	rgb(48, 123, 157)
HSL	hsl(199, 53%, 40%)
HSV	hsv(199, 69%, 62%)
CMYK	cmyk(69.4%, 21.7%, 0%, 38.4%)
CIE-LAB	lab(48.54, -11.75, -25.01)
CIE-LCH	lch(48.54, 27.63, 244.83°)
OKLab	oklab(55.14% -0.0562 -0.0701)
OKLCH	oklch(55.14% 0.09 231.3)
XYZ	xyz(14.3853, 17.2270, 34.4588)
Luminance	0.1723 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307B9D #9D5230

analogous

#309D89 #307B9D #30449D

triadic

#307B9D #9D307B #7B9D30

tetradic

#307B9D #89309D #9D5230 #449D30

square

#307B9D #89309D #9D5230 #449D30

split-complementary

#307B9D #9D3044 #9D8930

monochromatic

#13323F #22566E #307B9D #449DC6 #73B6D4

Accessibility & contrast

On white

4.72

#307B9D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.45

#307B9D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #307B9D

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307B9D	#FFFFFF	#000000	##FFFFFF
##307B9D	1.00	4.72	4.45	4.72
#FFFFFF	4.72	1.00	21.00	1.00
#000000	4.45	21.00	1.00	21.00
##FFFFFF	4.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A799F

Deuteranopia (green-blind)

#5B6F9D

Tritanopia (blue-blind)

#008486

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #307b9d;
/* rgb */ color: rgb(48, 123, 157);
/* oklch */ color: oklch(55.1% 0.090 231.3);

Tailwind

colors: {
  custom: {
    50: '#76a1ba',
    500: '#307b9d',
    950: '#000000',
  },
}

SCSS

$custom: #307b9d;
$custom-light: #76a1ba;
$custom-dark: #000000;

JSON

{
  "hex": "#307b9d",
  "rgb": {
    "r": 48,
    "g": 123,
    "b": 157
  },
  "hsl": {
    "h": 198.716,
    "s": 53.171,
    "l": 40.196
  },
  "oklch": {
    "l": 0.55137,
    "c": 0.08989,
    "h": 231.3
  },
  "luminance": 0.17229
}

Semantic roles & 50–950 ramp

primary

#307B9D

secondary

#BC856D

accent

#794BDD

background

#F7F9FB

surface

#EEF2F6

border

#C9CCD0

text

#090E11

muted

#7B7E80

Preview Lab

Preview with #307B9D

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

Preview Lab → · Contrast checker → · Palette generator →