#307B9F#307B9F

#307B9F is a mid, moderate cyan. Relative luminance 0.173; OKLCH L 55.2% C 0.092 H 232.8°. Best body text is #FFFFFF at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#307B9F
RGB	rgb(48, 123, 159)
HSL	hsl(199, 54%, 41%)
HSV	hsv(199, 70%, 62%)
CMYK	cmyk(69.8%, 22.6%, 0%, 37.6%)
CIE-LAB	lab(48.63, -11.06, -26.05)
CIE-LCH	lch(48.63, 28.30, 246.99°)
OKLab	oklab(55.23% -0.0555 -0.0731)
OKLCH	oklch(55.23% 0.092 232.8)
XYZ	xyz(14.5574, 17.2959, 35.3654)
Luminance	0.1730 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307B9F #9F5430

analogous

#309F8B #307B9F #30449F

triadic

#307B9F #9F307B #7B9F30

tetradic

#307B9F #8B309F #9F5430 #449F30

square

#307B9F #8B309F #9F5430 #449F30

split-complementary

#307B9F #9F3044 #9F8B30

monochromatic

#143241 #225770 #307B9F #459DC7 #74B6D5

Accessibility & contrast

On white

4.71

#307B9F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.46

#307B9F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #307B9F

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307B9F	#FFFFFF	#000000	##FFFFFF
##307B9F	1.00	4.71	4.46	4.71
#FFFFFF	4.71	1.00	21.00	1.00
#000000	4.46	21.00	1.00	21.00
##FFFFFF	4.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#697AA1

Deuteranopia (green-blind)

#5A6F9E

Tritanopia (blue-blind)

#008587

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #307b9f;
/* rgb */ color: rgb(48, 123, 159);
/* oklch */ color: oklch(55.2% 0.092 232.8);

Tailwind

colors: {
  custom: {
    50: '#76a1bb',
    500: '#307b9f',
    950: '#000000',
  },
}

SCSS

$custom: #307b9f;
$custom-light: #76a1bb;
$custom-dark: #000000;

JSON

{
  "hex": "#307b9f",
  "rgb": {
    "r": 48,
    "g": 123,
    "b": 159
  },
  "hsl": {
    "h": 199.459,
    "s": 53.623,
    "l": 40.588
  },
  "oklch": {
    "l": 0.55234,
    "c": 0.09178,
    "h": 232.8
  },
  "luminance": 0.17297
}

Semantic roles & 50–950 ramp

primary

#307B9F

secondary

#BD876E

accent

#7A4BDD

background

#F7F9FB

surface

#EEF2F6

border

#C9CCD0

text

#090E12

muted

#7B7E81

Preview Lab

Preview with #307B9F

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

Preview Lab → · Contrast checker → · Palette generator →