#4275D5#4275D5

#4275D5 is a mid, vivid blue. Relative luminance 0.187; OKLCH L 57.6% C 0.158 H 261.7°. Best body text is #000000 at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#4275D5
RGB	rgb(66, 117, 213)
HSL	hsl(219, 64%, 55%)
HSV	hsv(219, 69%, 84%)
CMYK	cmyk(69%, 45.1%, 0%, 16.5%)
CIE-LAB	lab(50.31, 14.57, -54.46)
CIE-LCH	lch(50.31, 56.38, 284.98°)
OKLab	oklab(57.64% -0.0227 -0.1559)
OKLCH	oklch(57.64% 0.158 261.7)
XYZ	xyz(20.6140, 18.6828, 65.4576)
Luminance	0.1868 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4275D5 #D5A242

analogous

#42BED5 #4275D5 #5942D5

triadic

#4275D5 #D54275 #75D542

tetradic

#4275D5 #D542BE #D5A242 #42D559

square

#4275D5 #D542BE #D5A242 #42D559

split-complementary

#4275D5 #D55942 #BED542

monochromatic

#1C3F80 #2858B2 #4275D5 #749AE0 #A6BEEB

Accessibility & contrast

On white

4.43

#4275D5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.74

#4275D5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4275D5

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4275D5	#FFFFFF	#000000	##000000
##4275D5	1.00	4.43	4.74	4.74
#FFFFFF	4.43	1.00	21.00	21.00
#000000	4.74	21.00	1.00	1.00
##000000	4.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#457FD9

Deuteranopia (green-blind)

#2871D3

Tritanopia (blue-blind)

#008B9A

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #4275d5;
/* rgb */ color: rgb(66, 117, 213);
/* oklch */ color: oklch(57.6% 0.158 261.7);

Tailwind

colors: {
  custom: {
    50: '#879ce2',
    500: '#4275d5',
    950: '#000000',
  },
}

SCSS

$custom: #4275d5;
$custom-light: #879ce2;
$custom-dark: #000000;

JSON

{
  "hex": "#4275d5",
  "rgb": {
    "r": 66,
    "g": 117,
    "b": 213
  },
  "hsl": {
    "h": 219.184,
    "s": 63.636,
    "l": 54.706
  },
  "oklch": {
    "l": 0.57642,
    "c": 0.15751,
    "h": 261.7
  },
  "luminance": 0.18685
}

Semantic roles & 50–950 ramp

primary

#4275D5

secondary

#D8C39A

accent

#AD41E7

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0D0E15

muted

#7D7E83

Preview Lab

Preview with #4275D5

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

Preview Lab → · Contrast checker → · Palette generator →