#427FDF#427FDF

#427FDF is a mid, vivid blue. Relative luminance 0.217; OKLCH L 60.4% C 0.159 H 259.2°. Best body text is #000000 at 5.33:1 contrast (WCAG AA passes).

Color values

HEX	#427FDF
RGB	rgb(66, 127, 223)
HSL	hsl(217, 71%, 57%)
HSV	hsv(217, 70%, 87%)
CMYK	cmyk(70.4%, 43%, 0%, 12.5%)
CIE-LAB	lab(53.67, 11.97, -54.74)
CIE-LCH	lch(53.67, 56.03, 282.33°)
OKLab	oklab(60.42% -0.0299 -0.1565)
OKLCH	oklch(60.42% 0.159 259.2)
XYZ	xyz(23.1506, 21.6622, 72.7589)
Luminance	0.2167 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427FDF #DFA242

analogous

#42CEDF #427FDF #5442DF

triadic

#427FDF #DF427F #7FDF42

tetradic

#427FDF #DF42CE #DFA242 #42DF54

square

#427FDF #DF42CE #DFA242 #42DF54

split-complementary

#427FDF #DF5442 #CEDF42

monochromatic

#18468E #2160C3 #427FDF #76A2E8 #ABC6F1

Accessibility & contrast

On white

3.94

#427FDF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.33

#427FDF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427FDF

5.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427FDF	#FFFFFF	#000000	##000000
##427FDF	1.00	3.94	5.33	5.33
#FFFFFF	3.94	1.00	21.00	21.00
#000000	5.33	21.00	1.00	1.00
##000000	5.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5088E3

Deuteranopia (green-blind)

#347ADD

Tritanopia (blue-blind)

#0095A4

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #427fdf;
/* rgb */ color: rgb(66, 127, 223);
/* oklch */ color: oklch(60.4% 0.159 259.2);

Tailwind

colors: {
  custom: {
    50: '#88a3e9',
    500: '#427fdf',
    950: '#000000',
  },
}

SCSS

$custom: #427fdf;
$custom-light: #88a3e9;
$custom-dark: #000000;

JSON

{
  "hex": "#427fdf",
  "rgb": {
    "r": 66,
    "g": 127,
    "b": 223
  },
  "hsl": {
    "h": 216.688,
    "s": 71.041,
    "l": 56.667
  },
  "oklch": {
    "l": 0.60418,
    "c": 0.15935,
    "h": 259.2
  },
  "luminance": 0.21665
}

Semantic roles & 50–950 ramp

primary

#427FDF

secondary

#DFC69E

accent

#A83AEE

background

#F9FAFE

surface

#F1F3FD

border

#CBCDD5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #427FDF

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

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