#427EBB#427EBB

#427EBB is a mid, moderate cyan. Relative luminance 0.197; OKLCH L 58.1% C 0.113 H 250.7°. Best body text is #000000 at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#427EBB
RGB	rgb(66, 126, 187)
HSL	hsl(210, 48%, 50%)
HSV	hsv(210, 65%, 73%)
CMYK	cmyk(64.7%, 32.6%, 0%, 26.7%)
CIE-LAB	lab(51.46, -0.09, -37.80)
CIE-LCH	lch(51.46, 37.80, 269.86°)
OKLab	oklab(58.07% -0.0374 -0.1069)
OKLCH	oklch(58.07% 0.113 250.7)
XYZ	xyz(18.6740, 19.6660, 49.8159)
Luminance	0.1967 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#427EBB #BB7F42

analogous

#42BBBB #427EBB #4342BB

triadic

#427EBB #BB427E #7EBB42

tetradic

#427EBB #BB42BB #BB7F42 #42BB43

square

#427EBB #BB42BB #BB7F42 #42BB43

split-complementary

#427EBB #BB4342 #BBBB42

monochromatic

#224161 #32608E #427EBB #6E9DCC #9CBBDC

Accessibility & contrast

On white

4.26

#427EBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.93

#427EBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #427EBB

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##427EBB	#FFFFFF	#000000	##000000
##427EBB	1.00	4.26	4.93	4.93
#FFFFFF	4.26	1.00	21.00	21.00
#000000	4.93	21.00	1.00	1.00
##000000	4.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6381BE

Deuteranopia (green-blind)

#5375BA

Tritanopia (blue-blind)

#008C94

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #427ebb;
/* rgb */ color: rgb(66, 126, 187);
/* oklch */ color: oklch(58.1% 0.113 250.7);

Tailwind

colors: {
  custom: {
    50: '#82a3d0',
    500: '#427ebb',
    950: '#000000',
  },
}

SCSS

$custom: #427ebb;
$custom-light: #82a3d0;
$custom-dark: #000000;

JSON

{
  "hex": "#427ebb",
  "rgb": {
    "r": 66,
    "g": 126,
    "b": 187
  },
  "hsl": {
    "h": 210.248,
    "s": 47.826,
    "l": 49.608
  },
  "oklch": {
    "l": 0.58071,
    "c": 0.11331,
    "h": 250.7
  },
  "luminance": 0.19668
}

Semantic roles & 50–950 ramp

primary

#427EBB

secondary

#C8AD91

accent

#9450D7

background

#F8FAFC

surface

#F0F3F9

border

#CBCDD2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #427EBB

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

Preview Lab → · Contrast checker → · Palette generator →