#307BBF#307BBF

#307BBF is a mid, vivid cyan. Relative luminance 0.186; OKLCH L 56.9% C 0.128 H 249.3°. Best body text is #000000 at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#307BBF
RGB	rgb(48, 123, 191)
HSL	hsl(209, 60%, 47%)
HSV	hsv(209, 75%, 75%)
CMYK	cmyk(74.9%, 35.6%, 0%, 25.1%)
CIE-LAB	lab(50.16, 0.36, -42.19)
CIE-LCH	lch(50.16, 42.19, 270.49°)
OKLab	oklab(56.95% -0.0453 -0.12)
OKLCH	oklch(56.95% 0.128 249.3)
XYZ	xyz(17.7023, 18.5539, 51.9284)
Luminance	0.1856 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307BBF #BF7430

analogous

#30BFBC #307BBF #3034BF

triadic

#307BBF #BF307B #7BBF30

tetradic

#307BBF #BC30BF #BF7430 #34BF30

square

#307BBF #BC30BF #BF7430 #34BF30

split-complementary

#307BBF #BF3034 #BFBC30

monochromatic

#173C5D #245C8E #307BBF #5799D5 #88B7E1

Accessibility & contrast

On white

4.46

#307BBF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.71

#307BBF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #307BBF

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

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

Color blindness preview

Protanopia (red-blind)

#5C7FC2

Deuteranopia (green-blind)

#4771BE

Tritanopia (blue-blind)

#008B94

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #307bbf;
/* rgb */ color: rgb(48, 123, 191);
/* oklch */ color: oklch(56.9% 0.128 249.3);

Tailwind

colors: {
  custom: {
    50: '#7ca0d2',
    500: '#307bbf',
    950: '#000000',
  },
}

SCSS

$custom: #307bbf;
$custom-light: #7ca0d2;
$custom-dark: #000000;

JSON

{
  "hex": "#307bbf",
  "rgb": {
    "r": 48,
    "g": 123,
    "b": 191
  },
  "hsl": {
    "h": 208.531,
    "s": 59.833,
    "l": 46.863
  },
  "oklch": {
    "l": 0.56946,
    "c": 0.12827,
    "h": 249.3
  },
  "luminance": 0.18556
}

Semantic roles & 50–950 ramp

primary

#307BBF

secondary

#CBA480

accent

#9045E3

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #307BBF

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

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