#427ED5#427ED5

#427ED5 is a mid, vivid blue. Relative luminance 0.209; OKLCH L 59.6% C 0.147 H 257.9°. Best body text is #000000 at 5.18:1 contrast (WCAG AA passes).

Color values

HEX	#427ED5
RGB	rgb(66, 126, 213)
HSL	hsl(216, 64%, 55%)
HSV	hsv(216, 69%, 84%)
CMYK	cmyk(69%, 40.8%, 0%, 16.5%)
CIE-LAB	lab(52.82, 9.02, -50.46)
CIE-LCH	lch(52.82, 51.26, 280.13°)
OKLab	oklab(59.58% -0.031 -0.144)
OKLCH	oklch(59.58% 0.147 257.9)
XYZ	xyz(21.7135, 20.8818, 65.8241)
Luminance	0.2088 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427ED5 #D59942

analogous

#42C8D5 #427ED5 #5042D5

triadic

#427ED5 #D5427E #7ED542

tetradic

#427ED5 #D542C8 #D59942 #42D550

square

#427ED5 #D542C8 #D59942 #42D550

split-complementary

#427ED5 #D55042 #C8D542

monochromatic

#1C4580 #2860B2 #427ED5 #74A0E0 #A6C2EB

Accessibility & contrast

On white

4.06

#427ED5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.18

#427ED5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427ED5

5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427ED5	#FFFFFF	#000000	##000000
##427ED5	1.00	4.06	5.18	5.18
#FFFFFF	4.06	1.00	21.00	21.00
#000000	5.18	21.00	1.00	1.00
##000000	5.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5585D8

Deuteranopia (green-blind)

#3E78D3

Tritanopia (blue-blind)

#00929F

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #427ed5;
/* rgb */ color: rgb(66, 126, 213);
/* oklch */ color: oklch(59.6% 0.147 257.9);

Tailwind

colors: {
  custom: {
    50: '#86a2e2',
    500: '#427ed5',
    950: '#000000',
  },
}

SCSS

$custom: #427ed5;
$custom-light: #86a2e2;
$custom-dark: #000000;

JSON

{
  "hex": "#427ed5",
  "rgb": {
    "r": 66,
    "g": 126,
    "b": 213
  },
  "hsl": {
    "h": 215.51,
    "s": 63.636,
    "l": 54.706
  },
  "oklch": {
    "l": 0.59578,
    "c": 0.14726,
    "h": 257.9
  },
  "luminance": 0.20884
}

Semantic roles & 50–950 ramp

primary

#427ED5

secondary

#D8BF9A

accent

#A341E7

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0F15

muted

#7D7E83

Preview Lab

Preview with #427ED5

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

Preview Lab → · Contrast checker → · Palette generator →