#4275CC#4275CC

#4275CC is a mid, vivid blue. Relative luminance 0.182; OKLCH L 57.1% C 0.145 H 260.4°. Best body text is #000000 at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#4275CC
RGB	rgb(66, 117, 204)
HSL	hsl(218, 58%, 53%)
HSV	hsv(218, 68%, 80%)
CMYK	cmyk(67.6%, 42.6%, 0%, 20%)
CIE-LAB	lab(49.78, 11.36, -50.19)
CIE-LCH	lch(49.78, 51.46, 282.75°)
OKLab	oklab(57.06% -0.0243 -0.1433)
OKLCH	oklch(57.06% 0.145 260.4)
XYZ	xyz(19.5032, 18.2385, 59.6076)
Luminance	0.1824 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4275CC #CC9942

analogous

#42BACC #4275CC #5442CC

triadic

#4275CC #CC4275 #75CC42

tetradic

#4275CC #CC42BA #CC9942 #42CC54

square

#4275CC #CC42BA #CC9942 #42CC54

split-complementary

#4275CC #CC5442 #BACC42

monochromatic

#1F3F74 #2C59A4 #4275CC #7298D9 #A2BBE6

Accessibility & contrast

On white

4.52

#4275CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.65

#4275CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4275CC

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4275CC	#FFFFFF	#000000	##000000
##4275CC	1.00	4.52	4.65	4.65
#FFFFFF	4.52	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)

#4C7DCF

Deuteranopia (green-blind)

#3570CA

Tritanopia (blue-blind)

#008996

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #4275cc;
/* rgb */ color: rgb(66, 117, 204);
/* oklch */ color: oklch(57.1% 0.145 260.4);

Tailwind

colors: {
  custom: {
    50: '#859cdc',
    500: '#4275cc',
    950: '#000000',
  },
}

SCSS

$custom: #4275cc;
$custom-light: #859cdc;
$custom-dark: #000000;

JSON

{
  "hex": "#4275cc",
  "rgb": {
    "r": 66,
    "g": 117,
    "b": 204
  },
  "hsl": {
    "h": 217.826,
    "s": 57.5,
    "l": 52.941
  },
  "oklch": {
    "l": 0.57062,
    "c": 0.14536,
    "h": 260.4
  },
  "luminance": 0.1824
}

Semantic roles & 50–950 ramp

primary

#4275CC

secondary

#D3BD97

accent

#A847E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4275CC

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

Preview Lab → · Contrast checker → · Palette generator →