#427DDA#427DDA

#427DDA is a mid, vivid blue. Relative luminance 0.209; OKLCH L 59.7% C 0.155 H 259.2°. Best body text is #000000 at 5.18:1 contrast (WCAG AA passes).

Color values

HEX	#427DDA
RGB	rgb(66, 125, 218)
HSL	hsl(217, 67%, 56%)
HSV	hsv(217, 70%, 85%)
CMYK	cmyk(69.7%, 42.7%, 0%, 14.5%)
CIE-LAB	lab(52.82, 11.41, -53.27)
CIE-LCH	lch(52.82, 54.48, 282.09°)
OKLab	oklab(59.67% -0.0291 -0.1522)
OKLCH	oklch(59.67% 0.155 259.2)
XYZ	xyz(22.2307, 20.8851, 69.1757)
Luminance	0.2089 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427DDA #DA9F42

analogous

#42C9DA #427DDA #5342DA

triadic

#427DDA #DA427D #7DDA42

tetradic

#427DDA #DA42C9 #DA9F42 #42DA53

square

#427DDA #DA42C9 #DA9F42 #42DA53

split-complementary

#427DDA #DA5342 #C9DA42

monochromatic

#1A4587 #245FBA #427DDA #75A0E4 #A8C3EE

Accessibility & contrast

On white

4.06

#427DDA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.18

#427DDA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427DDA

5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427DDA	#FFFFFF	#000000	##000000
##427DDA	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)

#5086DE

Deuteranopia (green-blind)

#3678D8

Tritanopia (blue-blind)

#0093A1

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #427dda;
/* rgb */ color: rgb(66, 125, 218);
/* oklch */ color: oklch(59.7% 0.155 259.2);

Tailwind

colors: {
  custom: {
    50: '#87a2e6',
    500: '#427dda',
    950: '#000000',
  },
}

SCSS

$custom: #427dda;
$custom-light: #87a2e6;
$custom-dark: #000000;

JSON

{
  "hex": "#427dda",
  "rgb": {
    "r": 66,
    "g": 125,
    "b": 218
  },
  "hsl": {
    "h": 216.711,
    "s": 67.257,
    "l": 55.686
  },
  "oklch": {
    "l": 0.59672,
    "c": 0.155,
    "h": 259.2
  },
  "luminance": 0.20887
}

Semantic roles & 50–950 ramp

primary

#427DDA

secondary

#DBC39C

accent

#A73EEA

background

#F9F9FE

surface

#F1F2FC

border

#CBCCD5

text

#0D0F16

muted

#7E7E84

Preview Lab

Preview with #427DDA

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

Preview Lab → · Contrast checker → · Palette generator →