#427ED9#427ED9

#427ED9 is a mid, vivid blue. Relative luminance 0.211; OKLCH L 59.8% C 0.153 H 258.6°. Best body text is #000000 at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#427ED9
RGB	rgb(66, 126, 217)
HSL	hsl(216, 67%, 55%)
HSV	hsv(216, 70%, 85%)
CMYK	cmyk(69.6%, 41.9%, 0%, 14.9%)
CIE-LAB	lab(53.05, 10.44, -52.35)
CIE-LCH	lch(53.05, 53.39, 281.28°)
OKLab	oklab(59.83% -0.0302 -0.1495)
OKLCH	oklch(59.83% 0.153 258.6)
XYZ	xyz(22.2275, 21.0874, 68.5310)
Luminance	0.2109 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427ED9 #D99D42

analogous

#42C9D9 #427ED9 #5142D9

triadic

#427ED9 #D9427E #7ED942

tetradic

#427ED9 #D942C9 #D99D42 #42D951

square

#427ED9 #D942C9 #D99D42 #42D951

split-complementary

#427ED9 #D95142 #C9D942

monochromatic

#1B4586 #2560B9 #427ED9 #75A1E3 #A8C4ED

Accessibility & contrast

On white

4.02

#427ED9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.22

#427ED9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427ED9

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427ED9	#FFFFFF	#000000	##000000
##427ED9	1.00	4.02	5.22	5.22
#FFFFFF	4.02	1.00	21.00	21.00
#000000	5.22	21.00	1.00	1.00
##000000	5.22	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5386DD

Deuteranopia (green-blind)

#3978D7

Tritanopia (blue-blind)

#0093A1

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #427ed9;
/* rgb */ color: rgb(66, 126, 217);
/* oklch */ color: oklch(59.8% 0.153 258.6);

Tailwind

colors: {
  custom: {
    50: '#87a2e5',
    500: '#427ed9',
    950: '#000000',
  },
}

SCSS

$custom: #427ed9;
$custom-light: #87a2e5;
$custom-dark: #000000;

JSON

{
  "hex": "#427ed9",
  "rgb": {
    "r": 66,
    "g": 126,
    "b": 217
  },
  "hsl": {
    "h": 216.159,
    "s": 66.52,
    "l": 55.49
  },
  "oklch": {
    "l": 0.59825,
    "c": 0.15255,
    "h": 258.6
  },
  "luminance": 0.2109
}

Semantic roles & 50–950 ramp

primary

#427ED9

secondary

#DBC29C

accent

#A53EE9

background

#F9F9FE

surface

#F1F2FC

border

#CBCCD5

text

#0D0F16

muted

#7E7E84

Preview Lab

Preview with #427ED9

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

Preview Lab → · Contrast checker → · Palette generator →