#427BD3#427BD3

#427BD3 is a mid, vivid blue. Relative luminance 0.200; OKLCH L 58.8% C 0.148 H 258.9°. Best body text is #000000 at 5.01:1 contrast (WCAG AA passes).

Color values

HEX	#427BD3
RGB	rgb(66, 123, 211)
HSL	hsl(216, 62%, 54%)
HSV	hsv(216, 69%, 83%)
CMYK	cmyk(68.7%, 41.7%, 0%, 17.3%)
CIE-LAB	lab(51.87, 10.15, -50.85)
CIE-LCH	lch(51.87, 51.85, 281.29°)
OKLab	oklab(58.8% -0.0286 -0.1451)
OKLCH	oklch(58.8% 0.148 258.9)
XYZ	xyz(21.0834, 20.0251, 64.3695)
Luminance	0.2003 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427BD3 #D39A42

analogous

#42C4D3 #427BD3 #5242D3

triadic

#427BD3 #D3427B #7BD342

tetradic

#427BD3 #D342C4 #D39A42 #42D352

square

#427BD3 #D342C4 #D39A42 #42D352

split-complementary

#427BD3 #D35242 #C4D342

monochromatic

#1D437D #295EAF #427BD3 #749EDF #A5C0EA

Accessibility & contrast

On white

4.20

#427BD3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.01

#427BD3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427BD3

5.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427BD3	#FFFFFF	#000000	##000000
##427BD3	1.00	4.20	5.01	5.01
#FFFFFF	4.20	1.00	21.00	21.00
#000000	5.01	21.00	1.00	1.00
##000000	5.01	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5283D6

Deuteranopia (green-blind)

#3A75D1

Tritanopia (blue-blind)

#008F9D

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #427bd3;
/* rgb */ color: rgb(66, 123, 211);
/* oklch */ color: oklch(58.8% 0.148 258.9);

Tailwind

colors: {
  custom: {
    50: '#86a0e1',
    500: '#427bd3',
    950: '#000000',
  },
}

SCSS

$custom: #427bd3;
$custom-light: #86a0e1;
$custom-dark: #000000;

JSON

{
  "hex": "#427bd3",
  "rgb": {
    "r": 66,
    "g": 123,
    "b": 211
  },
  "hsl": {
    "h": 216.414,
    "s": 62.232,
    "l": 54.314
  },
  "oklch": {
    "l": 0.58802,
    "c": 0.14794,
    "h": 258.9
  },
  "luminance": 0.20027
}

Semantic roles & 50–950 ramp

primary

#427BD3

secondary

#D7BF9A

accent

#A542E5

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #427BD3

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

Preview Lab → · Contrast checker → · Palette generator →