#4275DB#4275DB

#4275DB is a mid, vivid blue. Relative luminance 0.190; OKLCH L 58.0% C 0.166 H 262.5°. Best body text is #000000 at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#4275DB
RGB	rgb(66, 117, 219)
HSL	hsl(220, 68%, 56%)
HSV	hsv(220, 70%, 86%)
CMYK	cmyk(69.9%, 46.6%, 0%, 14.1%)
CIE-LAB	lab(50.68, 16.72, -57.27)
CIE-LCH	lch(50.68, 59.66, 286.27°)
OKLab	oklab(58.04% -0.0217 -0.1641)
OKLCH	oklch(58.04% 0.166 262.5)
XYZ	xyz(21.3897, 18.9931, 69.5429)
Luminance	0.1900 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4275DB #DBA842

analogous

#42C1DB #4275DB #5B42DB

triadic

#4275DB #DB4275 #75DB42

tetradic

#4275DB #DB42C1 #DBA842 #42DB5B

square

#4275DB #DB42C1 #DBA842 #42DB5B

split-complementary

#4275DB #DB5B42 #C1DB42

monochromatic

#1A3F89 #2457BC #4275DB #759BE5 #A9C0EF

Accessibility & contrast

On white

4.38

#4275DB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.80

#4275DB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4275DB

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4275DB	#FFFFFF	#000000	##000000
##4275DB	1.00	4.38	4.80	4.80
#FFFFFF	4.38	1.00	21.00	21.00
#000000	4.80	21.00	1.00	1.00
##000000	4.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F80DF

Deuteranopia (green-blind)

#1C72D9

Tritanopia (blue-blind)

#008D9D

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #4275db;
/* rgb */ color: rgb(66, 117, 219);
/* oklch */ color: oklch(58.0% 0.166 262.5);

Tailwind

colors: {
  custom: {
    50: '#889ce7',
    500: '#4275db',
    950: '#000000',
  },
}

SCSS

$custom: #4275db;
$custom-light: #889ce7;
$custom-dark: #000000;

JSON

{
  "hex": "#4275db",
  "rgb": {
    "r": 66,
    "g": 117,
    "b": 219
  },
  "hsl": {
    "h": 220,
    "s": 68,
    "l": 55.882
  },
  "oklch": {
    "l": 0.5804,
    "c": 0.16557,
    "h": 262.5
  },
  "luminance": 0.18995
}

Semantic roles & 50–950 ramp

primary

#4275DB

secondary

#DCC79D

accent

#B13DEB

background

#F9F9FE

surface

#F1F2FC

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #4275DB

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

Preview Lab → · Contrast checker → · Palette generator →