#307FB0#307FB0

#307FB0 is a mid, moderate cyan. Relative luminance 0.189; OKLCH L 57.1% C 0.107 H 239.9°. Best body text is #000000 at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#307FB0
RGB	rgb(48, 127, 176)
HSL	hsl(203, 57%, 44%)
HSV	hsv(203, 73%, 69%)
CMYK	cmyk(72.7%, 27.8%, 0%, 31%)
CIE-LAB	lab(50.62, -7.42, -32.83)
CIE-LCH	lch(50.62, 33.66, 257.26°)
OKLab	oklab(57.06% -0.0536 -0.0927)
OKLCH	oklch(57.06% 0.107 239.9)
XYZ	xyz(16.6417, 18.9398, 43.8446)
Luminance	0.1894 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307FB0 #B06130

analogous

#30B0A1 #307FB0 #303FB0

triadic

#307FB0 #B0307F #7FB030

tetradic

#307FB0 #A130B0 #B06130 #3FB030

square

#307FB0 #A130B0 #B06130 #3FB030

split-complementary

#307FB0 #B0303F #B0A130

monochromatic

#163A50 #235C80 #307FB0 #4E9ECF #7EB8DC

Accessibility & contrast

On white

4.39

#307FB0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.79

#307FB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #307FB0

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307FB0	#FFFFFF	#000000	##000000
##307FB0	1.00	4.39	4.79	4.79
#FFFFFF	4.39	1.00	21.00	21.00
#000000	4.79	21.00	1.00	1.00
##000000	4.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#687FB2

Deuteranopia (green-blind)

#5773AF

Tritanopia (blue-blind)

#008B90

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #307fb0;
/* rgb */ color: rgb(48, 127, 176);
/* oklch */ color: oklch(57.1% 0.107 239.9);

Tailwind

colors: {
  custom: {
    50: '#79a4c8',
    500: '#307fb0',
    950: '#000000',
  },
}

SCSS

$custom: #307fb0;
$custom-light: #79a4c8;
$custom-dark: #000000;

JSON

{
  "hex": "#307fb0",
  "rgb": {
    "r": 48,
    "g": 127,
    "b": 176
  },
  "hsl": {
    "h": 202.969,
    "s": 57.143,
    "l": 43.922
  },
  "oklch": {
    "l": 0.57063,
    "c": 0.10709,
    "h": 239.9
  },
  "luminance": 0.18942
}

Semantic roles & 50–950 ramp

primary

#307FB0

secondary

#C59577

accent

#8247E0

background

#F7FAFC

surface

#EEF3F8

border

#C9CDD1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #307FB0

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

Preview Lab → · Contrast checker → · Palette generator →