#427CD3#427CD3

#427CD3 is a mid, vivid blue. Relative luminance 0.203; OKLCH L 59.0% C 0.147 H 258.4°. Best body text is #000000 at 5.06:1 contrast (WCAG AA passes).

Color values

HEX	#427CD3
RGB	rgb(66, 124, 211)
HSL	hsl(216, 62%, 54%)
HSV	hsv(216, 69%, 83%)
CMYK	cmyk(68.7%, 41.2%, 0%, 17.3%)
CIE-LAB	lab(52.15, 9.53, -50.40)
CIE-LCH	lch(52.15, 51.29, 280.71°)
OKLab	oklab(59.02% -0.0295 -0.1438)
OKLCH	oklch(59.02% 0.147 258.4)
XYZ	xyz(21.2080, 20.2745, 64.4111)
Luminance	0.2028 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427CD3 #D39942

analogous

#42C5D3 #427CD3 #5142D3

triadic

#427CD3 #D3427C #7CD342

tetradic

#427CD3 #D342C5 #D39942 #42D351

square

#427CD3 #D342C5 #D39942 #42D351

split-complementary

#427CD3 #D35142 #C5D342

monochromatic

#1D447D #295EAF #427CD3 #749EDF #A5C1EA

Accessibility & contrast

On white

4.15

#427CD3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.06

#427CD3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427CD3

5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427CD3	#FFFFFF	#000000	##000000
##427CD3	1.00	4.15	5.06	5.06
#FFFFFF	4.15	1.00	21.00	21.00
#000000	5.06	21.00	1.00	1.00
##000000	5.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5384D6

Deuteranopia (green-blind)

#3C76D1

Tritanopia (blue-blind)

#00909D

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #427cd3;
/* rgb */ color: rgb(66, 124, 211);
/* oklch */ color: oklch(59.0% 0.147 258.4);

Tailwind

colors: {
  custom: {
    50: '#86a1e1',
    500: '#427cd3',
    950: '#000000',
  },
}

SCSS

$custom: #427cd3;
$custom-light: #86a1e1;
$custom-dark: #000000;

JSON

{
  "hex": "#427cd3",
  "rgb": {
    "r": 66,
    "g": 124,
    "b": 211
  },
  "hsl": {
    "h": 216,
    "s": 62.232,
    "l": 54.314
  },
  "oklch": {
    "l": 0.59019,
    "c": 0.14682,
    "h": 258.4
  },
  "luminance": 0.20277
}

Semantic roles & 50–950 ramp

primary

#427CD3

secondary

#D7BF9A

accent

#A442E5

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #427CD3

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

Preview Lab → · Contrast checker → · Palette generator →