#427FB9#427FB9

#427FB9 is a mid, moderate cyan. Relative luminance 0.198; OKLCH L 58.2% C 0.110 H 249.2°. Best body text is #000000 at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#427FB9
RGB	rgb(66, 127, 185)
HSL	hsl(209, 47%, 49%)
HSV	hsv(209, 64%, 73%)
CMYK	cmyk(64.3%, 31.4%, 0%, 27.5%)
CIE-LAB	lab(51.65, -1.37, -36.35)
CIE-LCH	lch(51.65, 36.37, 267.83°)
OKLab	oklab(58.19% -0.039 -0.1027)
OKLCH	oklch(58.19% 0.11 249.2)
XYZ	xyz(18.5899, 19.8379, 48.7390)
Luminance	0.1984 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427FB9 #B97C42

analogous

#42B9B8 #427FB9 #4244B9

triadic

#427FB9 #B9427F #7FB942

tetradic

#427FB9 #B842B9 #B97C42 #44B942

square

#427FB9 #B842B9 #B97C42 #44B942

split-complementary

#427FB9 #B94244 #B9B842

monochromatic

#22415F #32608C #427FB9 #6D9DCB #9ABCDB

Accessibility & contrast

On white

4.23

#427FB9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.97

#427FB9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427FB9

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427FB9	#FFFFFF	#000000	##000000
##427FB9	1.00	4.23	4.97	4.97
#FFFFFF	4.23	1.00	21.00	21.00
#000000	4.97	21.00	1.00	1.00
##000000	4.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6681BC

Deuteranopia (green-blind)

#5676B8

Tritanopia (blue-blind)

#008D94

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #427fb9;
/* rgb */ color: rgb(66, 127, 185);
/* oklch */ color: oklch(58.2% 0.110 249.2);

Tailwind

colors: {
  custom: {
    50: '#82a3ce',
    500: '#427fb9',
    950: '#000000',
  },
}

SCSS

$custom: #427fb9;
$custom-light: #82a3ce;
$custom-dark: #000000;

JSON

{
  "hex": "#427fb9",
  "rgb": {
    "r": 66,
    "g": 127,
    "b": 185
  },
  "hsl": {
    "h": 209.244,
    "s": 47.41,
    "l": 49.216
  },
  "oklch": {
    "l": 0.58193,
    "c": 0.10987,
    "h": 249.2
  },
  "luminance": 0.1984
}

Semantic roles & 50–950 ramp

primary

#427FB9

secondary

#C7AB90

accent

#9251D7

background

#F8FAFC

surface

#F0F3F9

border

#CBCDD2

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #427FB9

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

Preview Lab → · Contrast checker → · Palette generator →