#427EB8#427EB8

#427EB8 is a mid, moderate cyan. Relative luminance 0.195; OKLCH L 57.9% C 0.110 H 249.5°. Best body text is #000000 at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#427EB8
RGB	rgb(66, 126, 184)
HSL	hsl(209, 47%, 49%)
HSV	hsv(209, 64%, 72%)
CMYK	cmyk(64.1%, 31.5%, 0%, 27.8%)
CIE-LAB	lab(51.31, -1.12, -36.31)
CIE-LCH	lch(51.31, 36.33, 268.23°)
OKLab	oklab(57.91% -0.0383 -0.1026)
OKLCH	oklch(57.91% 0.11 249.5)
XYZ	xyz(18.3562, 19.5389, 48.1421)
Luminance	0.1954 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427EB8 #B87C42

analogous

#42B8B7 #427EB8 #4243B8

triadic

#427EB8 #B8427E #7EB842

tetradic

#427EB8 #B742B8 #B87C42 #43B842

square

#427EB8 #B742B8 #B87C42 #43B842

split-complementary

#427EB8 #B84243 #B8B742

monochromatic

#22405E #325F8B #427EB8 #6D9CCB #9ABBDB

Accessibility & contrast

On white

4.28

#427EB8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.91

#427EB8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427EB8

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427EB8	#FFFFFF	#000000	##000000
##427EB8	1.00	4.28	4.91	4.91
#FFFFFF	4.28	1.00	21.00	21.00
#000000	4.91	21.00	1.00	1.00
##000000	4.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6581BB

Deuteranopia (green-blind)

#5575B7

Tritanopia (blue-blind)

#008C93

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #427eb8;
/* rgb */ color: rgb(66, 126, 184);
/* oklch */ color: oklch(57.9% 0.110 249.5);

Tailwind

colors: {
  custom: {
    50: '#82a3cd',
    500: '#427eb8',
    950: '#000000',
  },
}

SCSS

$custom: #427eb8;
$custom-light: #82a3cd;
$custom-dark: #000000;

JSON

{
  "hex": "#427eb8",
  "rgb": {
    "r": 66,
    "g": 126,
    "b": 184
  },
  "hsl": {
    "h": 209.492,
    "s": 47.2,
    "l": 49.02
  },
  "oklch": {
    "l": 0.57908,
    "c": 0.10951,
    "h": 249.5
  },
  "luminance": 0.19541
}

Semantic roles & 50–950 ramp

primary

#427EB8

secondary

#C7AA8F

accent

#9351D7

background

#F8FAFC

surface

#F0F3F9

border

#CBCDD2

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #427EB8

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

Preview Lab → · Contrast checker → · Palette generator →