#427BD7#427BD7

#427BD7 is a mid, vivid blue. Relative luminance 0.202; OKLCH L 59.1% C 0.153 H 259.6°. Best body text is #000000 at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#427BD7
RGB	rgb(66, 123, 215)
HSL	hsl(217, 65%, 55%)
HSV	hsv(217, 69%, 84%)
CMYK	cmyk(69.3%, 42.8%, 0%, 15.7%)
CIE-LAB	lab(52.09, 11.57, -52.74)
CIE-LCH	lch(52.09, 54.00, 282.37°)
OKLab	oklab(59.05% -0.0278 -0.1507)
OKLCH	oklch(59.05% 0.153 259.6)
XYZ	xyz(21.5911, 20.2282, 67.0434)
Luminance	0.2023 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427BD7 #D79E42

analogous

#42C6D7 #427BD7 #5342D7

triadic

#427BD7 #D7427B #7BD742

tetradic

#427BD7 #D742C6 #D79E42 #42D753

square

#427BD7 #D742C6 #D79E42 #42D753

split-complementary

#427BD7 #D75342 #C6D742

monochromatic

#1C4383 #265DB5 #427BD7 #759EE2 #A7C2EC

Accessibility & contrast

On white

4.16

#427BD7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.05

#427BD7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427BD7

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427BD7	#FFFFFF	#000000	##000000
##427BD7	1.00	4.16	5.05	5.05
#FFFFFF	4.16	1.00	21.00	21.00
#000000	5.05	21.00	1.00	1.00
##000000	5.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F84DB

Deuteranopia (green-blind)

#3576D5

Tritanopia (blue-blind)

#00909E

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #427bd7;
/* rgb */ color: rgb(66, 123, 215);
/* oklch */ color: oklch(59.1% 0.153 259.6);

Tailwind

colors: {
  custom: {
    50: '#87a0e4',
    500: '#427bd7',
    950: '#000000',
  },
}

SCSS

$custom: #427bd7;
$custom-light: #87a0e4;
$custom-dark: #000000;

JSON

{
  "hex": "#427bd7",
  "rgb": {
    "r": 66,
    "g": 123,
    "b": 215
  },
  "hsl": {
    "h": 217.047,
    "s": 65.066,
    "l": 55.098
  },
  "oklch": {
    "l": 0.59053,
    "c": 0.15327,
    "h": 259.6
  },
  "luminance": 0.2023
}

Semantic roles & 50–950 ramp

primary

#427BD7

secondary

#DAC29B

accent

#A840E8

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0D0E15

muted

#7D7E84

Preview Lab

Preview with #427BD7

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

Preview Lab → · Contrast checker → · Palette generator →