#427ED3#427ED3

#427ED3 is a mid, vivid blue. Relative luminance 0.208; OKLCH L 59.5% C 0.145 H 257.5°. Best body text is #000000 at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#427ED3
RGB	rgb(66, 126, 211)
HSL	hsl(215, 62%, 54%)
HSV	hsv(215, 69%, 83%)
CMYK	cmyk(68.7%, 40.3%, 0%, 17.3%)
CIE-LAB	lab(52.71, 8.31, -49.50)
CIE-LCH	lch(52.71, 50.19, 279.53°)
OKLab	oklab(59.46% -0.0314 -0.1412)
OKLCH	oklch(59.46% 0.145 257.5)
XYZ	xyz(21.4612, 20.7809, 64.4955)
Luminance	0.2078 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427ED3 #D39742

analogous

#42C7D3 #427ED3 #4E42D3

triadic

#427ED3 #D3427E #7ED342

tetradic

#427ED3 #D342C7 #D39742 #42D34E

square

#427ED3 #D342C7 #D39742 #42D34E

split-complementary

#427ED3 #D34E42 #C7D342

monochromatic

#1D457D #2960AF #427ED3 #74A0DF #A5C2EA

Accessibility & contrast

On white

4.07

#427ED3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.16

#427ED3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427ED3

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427ED3	#FFFFFF	#000000	##000000
##427ED3	1.00	4.07	5.16	5.16
#FFFFFF	4.07	1.00	21.00	21.00
#000000	5.16	21.00	1.00	1.00
##000000	5.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5785D6

Deuteranopia (green-blind)

#4078D1

Tritanopia (blue-blind)

#00929E

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #427ed3;
/* rgb */ color: rgb(66, 126, 211);
/* oklch */ color: oklch(59.5% 0.145 257.5);

Tailwind

colors: {
  custom: {
    50: '#86a2e1',
    500: '#427ed3',
    950: '#000000',
  },
}

SCSS

$custom: #427ed3;
$custom-light: #86a2e1;
$custom-dark: #000000;

JSON

{
  "hex": "#427ed3",
  "rgb": {
    "r": 66,
    "g": 126,
    "b": 211
  },
  "hsl": {
    "h": 215.172,
    "s": 62.232,
    "l": 54.314
  },
  "oklch": {
    "l": 0.59456,
    "c": 0.14461,
    "h": 257.5
  },
  "luminance": 0.20783
}

Semantic roles & 50–950 ramp

primary

#427ED3

secondary

#D7BE9A

accent

#A242E5

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0F15

muted

#7D7E83

Preview Lab

Preview with #427ED3

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

Preview Lab → · Contrast checker → · Palette generator →