#427DD3#427DD3

#427DD3 is a mid, vivid blue. Relative luminance 0.205; OKLCH L 59.2% C 0.146 H 257.9°. Best body text is #000000 at 5.11:1 contrast (WCAG AA passes).

Color values

HEX	#427DD3
RGB	rgb(66, 125, 211)
HSL	hsl(216, 62%, 54%)
HSV	hsv(216, 69%, 83%)
CMYK	cmyk(68.7%, 40.8%, 0%, 17.3%)
CIE-LAB	lab(52.43, 8.92, -49.95)
CIE-LCH	lch(52.43, 50.74, 280.13°)
OKLab	oklab(59.24% -0.0305 -0.1425)
OKLCH	oklch(59.24% 0.146 257.9)
XYZ	xyz(21.3340, 20.5264, 64.4531)
Luminance	0.2053 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427DD3 #D39842

analogous

#42C6D3 #427DD3 #5042D3

triadic

#427DD3 #D3427D #7DD342

tetradic

#427DD3 #D342C6 #D39842 #42D350

square

#427DD3 #D342C6 #D39842 #42D350

split-complementary

#427DD3 #D35042 #C6D342

monochromatic

#1D447D #295FAF #427DD3 #749FDF #A5C1EA

Accessibility & contrast

On white

4.11

#427DD3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.11

#427DD3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427DD3

5.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427DD3	#FFFFFF	#000000	##000000
##427DD3	1.00	4.11	5.11	5.11
#FFFFFF	4.11	1.00	21.00	21.00
#000000	5.11	21.00	1.00	1.00
##000000	5.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5584D6

Deuteranopia (green-blind)

#3E77D1

Tritanopia (blue-blind)

#00919E

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #427dd3;
/* rgb */ color: rgb(66, 125, 211);
/* oklch */ color: oklch(59.2% 0.146 257.9);

Tailwind

colors: {
  custom: {
    50: '#86a2e1',
    500: '#427dd3',
    950: '#000000',
  },
}

SCSS

$custom: #427dd3;
$custom-light: #86a2e1;
$custom-dark: #000000;

JSON

{
  "hex": "#427dd3",
  "rgb": {
    "r": 66,
    "g": 125,
    "b": 211
  },
  "hsl": {
    "h": 215.586,
    "s": 62.232,
    "l": 54.314
  },
  "oklch": {
    "l": 0.59237,
    "c": 0.14571,
    "h": 257.9
  },
  "luminance": 0.20529
}

Semantic roles & 50–950 ramp

primary

#427DD3

secondary

#D7BE9A

accent

#A342E5

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0F15

muted

#7D7E83

Preview Lab

Preview with #427DD3

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

Preview Lab → · Contrast checker → · Palette generator →