#4277DD#4277DD

#4277DD is a mid, vivid blue. Relative luminance 0.196; OKLCH L 58.6% C 0.166 H 262.0°. Best body text is #000000 at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#4277DD
RGB	rgb(66, 119, 221)
HSL	hsl(219, 70%, 56%)
HSV	hsv(219, 70%, 87%)
CMYK	cmyk(70.1%, 46.2%, 0%, 13.3%)
CIE-LAB	lab(51.35, 16.19, -57.33)
CIE-LCH	lch(51.35, 59.57, 285.77°)
OKLab	oklab(58.59% -0.0232 -0.1643)
OKLCH	oklch(58.59% 0.166 262)
XYZ	xyz(21.8901, 19.5701, 71.0164)
Luminance	0.1957 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4277DD #DDA842

analogous

#42C5DD #4277DD #5B42DD

triadic

#4277DD #DD4277 #77DD42

tetradic

#4277DD #DD42C5 #DDA842 #42DD5B

square

#4277DD #DD42C5 #DDA842 #42DD5B

split-complementary

#4277DD #DD5B42 #C5DD42

monochromatic

#19408C #2258BF #4277DD #769CE6 #AAC2F0

Accessibility & contrast

On white

4.27

#4277DD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.91

#4277DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4277DD

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4277DD	#FFFFFF	#000000	##000000
##4277DD	1.00	4.27	4.91	4.91
#FFFFFF	4.27	1.00	21.00	21.00
#000000	4.91	21.00	1.00	1.00
##000000	4.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4282E1

Deuteranopia (green-blind)

#1F74DB

Tritanopia (blue-blind)

#008F9F

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #4277dd;
/* rgb */ color: rgb(66, 119, 221);
/* oklch */ color: oklch(58.6% 0.166 262.0);

Tailwind

colors: {
  custom: {
    50: '#889de8',
    500: '#4277dd',
    950: '#000000',
  },
}

SCSS

$custom: #4277dd;
$custom-light: #889de8;
$custom-dark: #000000;

JSON

{
  "hex": "#4277dd",
  "rgb": {
    "r": 66,
    "g": 119,
    "b": 221
  },
  "hsl": {
    "h": 219.484,
    "s": 69.507,
    "l": 56.275
  },
  "oklch": {
    "l": 0.58592,
    "c": 0.1659,
    "h": 262
  },
  "luminance": 0.19572
}

Semantic roles & 50–950 ramp

primary

#4277DD

secondary

#DDC79D

accent

#B03BEC

background

#F9F9FE

surface

#F1F2FD

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #4277DD

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

Preview Lab → · Contrast checker → · Palette generator →