#4278BD#4278BD

#4278BD is a mid, vivid cyan. Relative luminance 0.183; OKLCH L 56.8% C 0.122 H 255.4°. Best body text is #000000 at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#4278BD
RGB	rgb(66, 120, 189)
HSL	hsl(214, 48%, 50%)
HSV	hsv(214, 65%, 74%)
CMYK	cmyk(65.1%, 36.5%, 0%, 25.9%)
CIE-LAB	lab(49.81, 4.22, -41.55)
CIE-LCH	lch(49.81, 41.76, 275.80°)
OKLab	oklab(56.82% -0.0306 -0.1179)
OKLCH	oklch(56.82% 0.122 255.4)
XYZ	xyz(18.1452, 18.2635, 50.7032)
Luminance	0.1827 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4278BD #BD8742

analogous

#42B5BD #4278BD #4A42BD

triadic

#4278BD #BD4278 #78BD42

tetradic

#4278BD #BD42B5 #BD8742 #42BD4A

square

#4278BD #BD42B5 #BD8742 #42BD4A

split-complementary

#4278BD #BD4A42 #B5BD42

monochromatic

#223E62 #325B90 #4278BD #6F98CD #9DB9DD

Accessibility & contrast

On white

4.51

#4278BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.65

#4278BD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4278BD

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4278BD	#FFFFFF	#000000	##000000
##4278BD	1.00	4.51	4.65	4.65
#FFFFFF	4.51	1.00	21.00	21.00
#000000	4.65	21.00	1.00	1.00
##000000	4.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A7DC0

Deuteranopia (green-blind)

#4871BC

Tritanopia (blue-blind)

#008891

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #4278bd;
/* rgb */ color: rgb(66, 120, 189);
/* oklch */ color: oklch(56.8% 0.122 255.4);

Tailwind

colors: {
  custom: {
    50: '#829ed1',
    500: '#4278bd',
    950: '#000000',
  },
}

SCSS

$custom: #4278bd;
$custom-light: #829ed1;
$custom-dark: #000000;

JSON

{
  "hex": "#4278bd",
  "rgb": {
    "r": 66,
    "g": 120,
    "b": 189
  },
  "hsl": {
    "h": 213.659,
    "s": 48.235,
    "l": 50
  },
  "oklch": {
    "l": 0.56818,
    "c": 0.12185,
    "h": 255.4
  },
  "luminance": 0.18265
}

Semantic roles & 50–950 ramp

primary

#4278BD

secondary

#C9B192

accent

#9C50D8

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E14

muted

#7D7E82

Preview Lab

Preview with #4278BD

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

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