#427CDD#427CDD

#427CDD is a mid, vivid blue. Relative luminance 0.208; OKLCH L 59.6% C 0.160 H 260.1°. Best body text is #000000 at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#427CDD
RGB	rgb(66, 124, 221)
HSL	hsl(218, 70%, 56%)
HSV	hsv(218, 70%, 87%)
CMYK	cmyk(70.1%, 43.9%, 0%, 13.3%)
CIE-LAB	lab(52.72, 13.10, -55.13)
CIE-LCH	lch(52.72, 56.66, 283.37°)
OKLab	oklab(59.65% -0.0276 -0.1577)
OKLCH	oklch(59.65% 0.16 260.1)
XYZ	xyz(22.5009, 20.7916, 71.2199)
Luminance	0.2079 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427CDD #DDA342

analogous

#42CADD #427CDD #5642DD

triadic

#427CDD #DD427C #7CDD42

tetradic

#427CDD #DD42CA #DDA342 #42DD56

square

#427CDD #DD42CA #DDA342 #42DD56

split-complementary

#427CDD #DD5642 #CADD42

monochromatic

#19448C #225DBF #427CDD #76A0E6 #AAC4F0

Accessibility & contrast

On white

4.07

#427CDD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.16

#427CDD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427CDD

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427CDD	#FFFFFF	#000000	##000000
##427CDD	1.00	4.07	5.16	5.16
#FFFFFF	4.07	1.00	21.00	21.00
#000000	5.16	21.00	1.00	1.00
##000000	5.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C85E1

Deuteranopia (green-blind)

#2F77DB

Tritanopia (blue-blind)

#0093A2

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #427cdd;
/* rgb */ color: rgb(66, 124, 221);
/* oklch */ color: oklch(59.6% 0.160 260.1);

Tailwind

colors: {
  custom: {
    50: '#88a1e8',
    500: '#427cdd',
    950: '#000000',
  },
}

SCSS

$custom: #427cdd;
$custom-light: #88a1e8;
$custom-dark: #000000;

JSON

{
  "hex": "#427cdd",
  "rgb": {
    "r": 66,
    "g": 124,
    "b": 221
  },
  "hsl": {
    "h": 217.548,
    "s": 69.507,
    "l": 56.275
  },
  "oklch": {
    "l": 0.59649,
    "c": 0.16011,
    "h": 260.1
  },
  "luminance": 0.20794
}

Semantic roles & 50–950 ramp

primary

#427CDD

secondary

#DDC59D

accent

#AA3BEC

background

#F9F9FE

surface

#F1F2FD

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #427CDD

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

Preview Lab → · Contrast checker → · Palette generator →