#307B99#307B99

#307B99 is a mid, moderate cyan. Relative luminance 0.171; OKLCH L 54.9% C 0.086 H 228.0°. Best body text is #FFFFFF at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#307B99
RGB	rgb(48, 123, 153)
HSL	hsl(197, 52%, 39%)
HSV	hsv(197, 69%, 60%)
CMYK	cmyk(68.6%, 19.6%, 0%, 40%)
CIE-LAB	lab(48.38, -13.12, -22.93)
CIE-LCH	lch(48.38, 26.41, 240.22°)
OKLab	oklab(54.95% -0.0577 -0.0642)
OKLCH	oklch(54.95% 0.086 228)
XYZ	xyz(14.0494, 17.0927, 32.6896)
Luminance	0.1709 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307B99 #994E30

analogous

#309983 #307B99 #304799

triadic

#307B99 #99307B #7B9930

tetradic

#307B99 #833099 #994E30 #479930

square

#307B99 #833099 #994E30 #479930

split-complementary

#307B99 #993047 #998330

monochromatic

#13303C #21566A #307B99 #429FC4 #71B7D2

Accessibility & contrast

On white

4.75

#307B99 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.42

#307B99 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #307B99

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307B99	#FFFFFF	#000000	##FFFFFF
##307B99	1.00	4.75	4.42	4.75
#FFFFFF	4.75	1.00	21.00	1.00
#000000	4.42	21.00	1.00	21.00
##FFFFFF	4.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B799B

Deuteranopia (green-blind)

#5D6E99

Tritanopia (blue-blind)

#008485

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #307b99;
/* rgb */ color: rgb(48, 123, 153);
/* oklch */ color: oklch(54.9% 0.086 228.0);

Tailwind

colors: {
  custom: {
    50: '#75a1b7',
    500: '#307b99',
    950: '#000000',
  },
}

SCSS

$custom: #307b99;
$custom-light: #75a1b7;
$custom-dark: #000000;

JSON

{
  "hex": "#307b99",
  "rgb": {
    "r": 48,
    "g": 123,
    "b": 153
  },
  "hsl": {
    "h": 197.143,
    "s": 52.239,
    "l": 39.412
  },
  "oklch": {
    "l": 0.54947,
    "c": 0.08632,
    "h": 228
  },
  "luminance": 0.17094
}

Semantic roles & 50–950 ramp

primary

#307B99

secondary

#BA816B

accent

#754CDC

background

#F7F9FB

surface

#EEF2F6

border

#C9CCD0

text

#090F11

muted

#7B7E80

Preview Lab

Preview with #307B99

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

Preview Lab → · Contrast checker → · Palette generator →