#4278BA#4278BA

#4278BA is a mid, moderate cyan. Relative luminance 0.181; OKLCH L 56.6% C 0.118 H 254.6°. Best body text is #000000 at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#4278BA
RGB	rgb(66, 120, 186)
HSL	hsl(213, 48%, 49%)
HSV	hsv(213, 65%, 73%)
CMYK	cmyk(64.5%, 35.5%, 0%, 27.1%)
CIE-LAB	lab(49.66, 3.17, -40.07)
CIE-LCH	lch(49.66, 40.19, 274.53°)
OKLab	oklab(56.65% -0.0314 -0.1136)
OKLCH	oklch(56.65% 0.118 254.6)
XYZ	xyz(17.8230, 18.1346, 49.0059)
Luminance	0.1814 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4278BA #BA8442

analogous

#42B4BA #4278BA #4842BA

triadic

#4278BA #BA4278 #78BA42

tetradic

#4278BA #BA42B4 #BA8442 #42BA48

square

#4278BA #BA42B4 #BA8442 #42BA48

split-complementary

#4278BA #BA4842 #B4BA42

monochromatic

#223E60 #325B8D #4278BA #6E98CB #9BB8DB

Accessibility & contrast

On white

4.54

#4278BA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.63

#4278BA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4278BA

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4278BA	#FFFFFF	#000000	##000000
##4278BA	1.00	4.54	4.63	4.63
#FFFFFF	4.54	1.00	21.00	21.00
#000000	4.63	21.00	1.00	1.00
##000000	4.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B7CBD

Deuteranopia (green-blind)

#4B71B9

Tritanopia (blue-blind)

#008790

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #4278ba;
/* rgb */ color: rgb(66, 120, 186);
/* oklch */ color: oklch(56.6% 0.118 254.6);

Tailwind

colors: {
  custom: {
    50: '#829ecf',
    500: '#4278ba',
    950: '#000000',
  },
}

SCSS

$custom: #4278ba;
$custom-light: #829ecf;
$custom-dark: #000000;

JSON

{
  "hex": "#4278ba",
  "rgb": {
    "r": 66,
    "g": 120,
    "b": 186
  },
  "hsl": {
    "h": 213,
    "s": 47.619,
    "l": 49.412
  },
  "oklch": {
    "l": 0.56646,
    "c": 0.11787,
    "h": 254.6
  },
  "luminance": 0.18136
}

Semantic roles & 50–950 ramp

primary

#4278BA

secondary

#C8AF90

accent

#9B51D7

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #4278BA

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

Preview Lab → · Contrast checker → · Palette generator →