#307B9A#307B9A

#307B9A is a mid, moderate cyan. Relative luminance 0.171; OKLCH L 55.0% C 0.087 H 228.9°. Best body text is #FFFFFF at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#307B9A
RGB	rgb(48, 123, 154)
HSL	hsl(198, 52%, 40%)
HSV	hsv(198, 69%, 60%)
CMYK	cmyk(68.8%, 20.1%, 0%, 39.6%)
CIE-LAB	lab(48.42, -12.78, -23.45)
CIE-LCH	lch(48.42, 26.70, 241.41°)
OKLab	oklab(54.99% -0.0573 -0.0657)
OKLCH	oklch(54.99% 0.087 228.9)
XYZ	xyz(14.1323, 17.1259, 33.1264)
Luminance	0.1713 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307B9A #9A4F30

analogous

#309A84 #307B9A #30469A

triadic

#307B9A #9A307B #7B9A30

tetradic

#307B9A #84309A #9A4F30 #469A30

square

#307B9A #84309A #9A4F30 #469A30

split-complementary

#307B9A #9A3046 #9A8430

monochromatic

#13303D #21566B #307B9A #439EC4 #72B6D3

Accessibility & contrast

On white

4.75

#307B9A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.43

#307B9A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #307B9A

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307B9A	#FFFFFF	#000000	##FFFFFF
##307B9A	1.00	4.75	4.43	4.75
#FFFFFF	4.75	1.00	21.00	1.00
#000000	4.43	21.00	1.00	21.00
##FFFFFF	4.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B799C

Deuteranopia (green-blind)

#5C6E9A

Tritanopia (blue-blind)

#008485

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #307b9a;
/* rgb */ color: rgb(48, 123, 154);
/* oklch */ color: oklch(55.0% 0.087 228.9);

Tailwind

colors: {
  custom: {
    50: '#75a1b8',
    500: '#307b9a',
    950: '#000000',
  },
}

SCSS

$custom: #307b9a;
$custom-light: #75a1b8;
$custom-dark: #000000;

JSON

{
  "hex": "#307b9a",
  "rgb": {
    "r": 48,
    "g": 123,
    "b": 154
  },
  "hsl": {
    "h": 197.547,
    "s": 52.475,
    "l": 39.608
  },
  "oklch": {
    "l": 0.54994,
    "c": 0.08718,
    "h": 228.9
  },
  "luminance": 0.17127
}

Semantic roles & 50–950 ramp

primary

#307B9A

secondary

#BB826B

accent

#764CDC

background

#F7F9FB

surface

#EEF2F6

border

#C9CCD0

text

#090F11

muted

#7B7E80

Preview Lab

Preview with #307B9A

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

Preview Lab → · Contrast checker → · Palette generator →