#307FB3#307FB3

#307FB3 is a mid, moderate cyan. Relative luminance 0.191; OKLCH L 57.2% C 0.110 H 241.5°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#307FB3
RGB	rgb(48, 127, 179)
HSL	hsl(204, 58%, 45%)
HSV	hsv(204, 73%, 70%)
CMYK	cmyk(73.2%, 29.1%, 0%, 29.8%)
CIE-LAB	lab(50.76, -6.36, -34.34)
CIE-LCH	lch(50.76, 34.93, 259.52°)
OKLab	oklab(57.22% -0.0527 -0.0971)
OKLCH	oklch(57.22% 0.11 241.5)
XYZ	xyz(16.9418, 19.0599, 45.4251)
Luminance	0.1906 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#307FB3 #B36430

analogous

#30B3A6 #307FB3 #303EB3

triadic

#307FB3 #B3307F #7FB330

tetradic

#307FB3 #A630B3 #B36430 #3EB330

square

#307FB3 #A630B3 #B36430 #3EB330

split-complementary

#307FB3 #B3303E #B3A630

monochromatic

#163B52 #235D83 #307FB3 #509DD0 #80B8DD

Accessibility & contrast

On white

4.36

#307FB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.81

#307FB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #307FB3

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##307FB3	#FFFFFF	#000000	##000000
##307FB3	1.00	4.36	4.81	4.81
#FFFFFF	4.36	1.00	21.00	21.00
#000000	4.81	21.00	1.00	1.00
##000000	4.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6780B5

Deuteranopia (green-blind)

#5573B2

Tritanopia (blue-blind)

#008C91

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #307fb3;
/* rgb */ color: rgb(48, 127, 179);
/* oklch */ color: oklch(57.2% 0.110 241.5);

Tailwind

colors: {
  custom: {
    50: '#7aa3ca',
    500: '#307fb3',
    950: '#000000',
  },
}

SCSS

$custom: #307fb3;
$custom-light: #7aa3ca;
$custom-dark: #000000;

JSON

{
  "hex": "#307fb3",
  "rgb": {
    "r": 48,
    "g": 127,
    "b": 179
  },
  "hsl": {
    "h": 203.817,
    "s": 57.709,
    "l": 44.51
  },
  "oklch": {
    "l": 0.57221,
    "c": 0.11044,
    "h": 241.5
  },
  "luminance": 0.19062
}

Semantic roles & 50–950 ramp

primary

#307FB3

secondary

#C69779

accent

#8447E1

background

#F8FAFC

surface

#EFF3F8

border

#CACDD1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #307FB3

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

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