#427DB9#427DB9

#427DB9 is a mid, moderate cyan. Relative luminance 0.193; OKLCH L 57.7% C 0.112 H 250.7°. Best body text is #000000 at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#427DB9
RGB	rgb(66, 125, 185)
HSL	hsl(210, 47%, 49%)
HSV	hsv(210, 64%, 73%)
CMYK	cmyk(64.3%, 32.4%, 0%, 27.5%)
CIE-LAB	lab(51.07, -0.18, -37.27)
CIE-LCH	lch(51.07, 37.27, 269.72°)
OKLab	oklab(57.73% -0.0369 -0.1054)
OKLCH	oklch(57.73% 0.112 250.7)
XYZ	xyz(18.3341, 19.3265, 48.6537)
Luminance	0.1933 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427DB9 #B97E42

analogous

#42B9B9 #427DB9 #4342B9

triadic

#427DB9 #B9427D #7DB942

tetradic

#427DB9 #B942B9 #B97E42 #42B943

square

#427DB9 #B942B9 #B97E42 #42B943

split-complementary

#427DB9 #B94342 #B9B942

monochromatic

#22405F #325F8C #427DB9 #6D9CCB #9ABADB

Accessibility & contrast

On white

4.32

#427DB9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.87

#427DB9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427DB9

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427DB9	#FFFFFF	#000000	##000000
##427DB9	1.00	4.32	4.87	4.87
#FFFFFF	4.32	1.00	21.00	21.00
#000000	4.87	21.00	1.00	1.00
##000000	4.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6380BC

Deuteranopia (green-blind)

#5374B8

Tritanopia (blue-blind)

#008B92

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #427db9;
/* rgb */ color: rgb(66, 125, 185);
/* oklch */ color: oklch(57.7% 0.112 250.7);

Tailwind

colors: {
  custom: {
    50: '#82a2ce',
    500: '#427db9',
    950: '#000000',
  },
}

SCSS

$custom: #427db9;
$custom-light: #82a2ce;
$custom-dark: #000000;

JSON

{
  "hex": "#427db9",
  "rgb": {
    "r": 66,
    "g": 125,
    "b": 185
  },
  "hsl": {
    "h": 210.252,
    "s": 47.41,
    "l": 49.216
  },
  "oklch": {
    "l": 0.57732,
    "c": 0.11168,
    "h": 250.7
  },
  "luminance": 0.19328
}

Semantic roles & 50–950 ramp

primary

#427DB9

secondary

#C7AC90

accent

#9451D7

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0F13

muted

#7C7E82

Preview Lab

Preview with #427DB9

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

Preview Lab → · Contrast checker → · Palette generator →