#427EB5#427EB5

#427EB5 is a mid, moderate cyan. Relative luminance 0.194; OKLCH L 57.7% C 0.106 H 248.3°. Best body text is #000000 at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#427EB5
RGB	rgb(66, 126, 181)
HSL	hsl(209, 47%, 48%)
HSV	hsv(209, 64%, 71%)
CMYK	cmyk(63.5%, 30.4%, 0%, 29%)
CIE-LAB	lab(51.17, -2.15, -34.81)
CIE-LCH	lch(51.17, 34.87, 266.47°)
OKLab	oklab(57.75% -0.0392 -0.0982)
OKLCH	oklch(57.75% 0.106 248.3)
XYZ	xyz(18.0450, 19.4144, 46.5035)
Luminance	0.1942 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427EB5 #B57942

analogous

#42B5B2 #427EB5 #4244B5

triadic

#427EB5 #B5427E #7EB542

tetradic

#427EB5 #B242B5 #B57942 #44B542

square

#427EB5 #B242B5 #B57942 #44B542

split-complementary

#427EB5 #B54244 #B5B242

monochromatic

#21405B #325F88 #427EB5 #6B9CC9 #98BAD9

Accessibility & contrast

On white

4.30

#427EB5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.88

#427EB5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427EB5

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427EB5	#FFFFFF	#000000	##000000
##427EB5	1.00	4.30	4.88	4.88
#FFFFFF	4.30	1.00	21.00	21.00
#000000	4.88	21.00	1.00	1.00
##000000	4.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6680B7

Deuteranopia (green-blind)

#5775B4

Tritanopia (blue-blind)

#008B91

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #427eb5;
/* rgb */ color: rgb(66, 126, 181);
/* oklch */ color: oklch(57.7% 0.106 248.3);

Tailwind

colors: {
  custom: {
    50: '#81a3cb',
    500: '#427eb5',
    950: '#000000',
  },
}

SCSS

$custom: #427eb5;
$custom-light: #81a3cb;
$custom-dark: #000000;

JSON

{
  "hex": "#427eb5",
  "rgb": {
    "r": 66,
    "g": 126,
    "b": 181
  },
  "hsl": {
    "h": 208.696,
    "s": 46.559,
    "l": 48.431
  },
  "oklch": {
    "l": 0.57749,
    "c": 0.10576,
    "h": 248.3
  },
  "luminance": 0.19416
}

Semantic roles & 50–950 ramp

primary

#427EB5

secondary

#C5A88E

accent

#9152D6

background

#F8FAFC

surface

#EFF3F8

border

#CACDD1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #427EB5

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

Preview Lab → · Contrast checker → · Palette generator →