#307BC9#307BC9

#307BC9 is a mid, vivid cyan. Relative luminance 0.190; OKLCH L 57.5% C 0.141 H 252.4°. Best body text is #000000 at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#307BC9
RGB	rgb(48, 123, 201)
HSL	hsl(211, 61%, 49%)
HSV	hsv(211, 76%, 79%)
CMYK	cmyk(76.1%, 38.8%, 0%, 21.2%)
CIE-LAB	lab(50.70, 4.04, -47.06)
CIE-LCH	lch(50.70, 47.23, 274.91°)
OKLab	oklab(57.54% -0.0427 -0.1343)
OKLCH	oklch(57.54% 0.141 252.4)
XYZ	xyz(18.8405, 19.0092, 57.9232)
Luminance	0.1901 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307BC9 #C97E30

analogous

#30C8C9 #307BC9 #3130C9

triadic

#307BC9 #C9307B #7BC930

tetradic

#307BC9 #C930C8 #C97E30 #30C931

square

#307BC9 #C930C8 #C97E30 #30C931

split-complementary

#307BC9 #C93130 #C8C930

monochromatic

#183F66 #245D98 #307BC9 #5E9AD8 #8FB9E4

Accessibility & contrast

On white

4.37

#307BC9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.80

#307BC9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #307BC9

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307BC9	#FFFFFF	#000000	##000000
##307BC9	1.00	4.37	4.80	4.80
#FFFFFF	4.37	1.00	21.00	21.00
#000000	4.80	21.00	1.00	1.00
##000000	4.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5680CC

Deuteranopia (green-blind)

#3E72C7

Tritanopia (blue-blind)

#008D98

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #307bc9;
/* rgb */ color: rgb(48, 123, 201);
/* oklch */ color: oklch(57.5% 0.141 252.4);

Tailwind

colors: {
  custom: {
    50: '#7ea0da',
    500: '#307bc9',
    950: '#000000',
  },
}

SCSS

$custom: #307bc9;
$custom-light: #7ea0da;
$custom-dark: #000000;

JSON

{
  "hex": "#307bc9",
  "rgb": {
    "r": 48,
    "g": 123,
    "b": 201
  },
  "hsl": {
    "h": 210.588,
    "s": 61.446,
    "l": 48.824
  },
  "oklch": {
    "l": 0.57542,
    "c": 0.1409,
    "h": 252.4
  },
  "luminance": 0.19011
}

Semantic roles & 50–950 ramp

primary

#307BC9

secondary

#CFAB86

accent

#9543E5

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E15

muted

#7C7E83

Preview Lab

Preview with #307BC9

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

Preview Lab → · Contrast checker → · Palette generator →