#4274DD#4274DD

#4274DD is a mid, vivid blue. Relative luminance 0.189; OKLCH L 58.0% C 0.169 H 263.0°. Best body text is #000000 at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#4274DD
RGB	rgb(66, 116, 221)
HSL	hsl(221, 70%, 56%)
HSV	hsv(221, 70%, 87%)
CMYK	cmyk(70.1%, 47.5%, 0%, 13.3%)
CIE-LAB	lab(50.53, 18.06, -58.64)
CIE-LCH	lch(50.53, 61.36, 287.12°)
OKLab	oklab(57.97% -0.0206 -0.1682)
OKLCH	oklch(57.97% 0.169 263)
XYZ	xyz(21.5387, 18.8672, 70.8992)
Luminance	0.1887 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4274DD #DDAB42

analogous

#42C2DD #4274DD #5E42DD

triadic

#4274DD #DD4274 #74DD42

tetradic

#4274DD #DD42C2 #DDAB42 #42DD5E

square

#4274DD #DD42C2 #DDAB42 #42DD5E

split-complementary

#4274DD #DD5E42 #C2DD42

monochromatic

#193E8C #2255BF #4274DD #769AE6 #AAC0F0

Accessibility & contrast

On white

4.40

#4274DD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.77

#4274DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4274DD

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4274DD	#FFFFFF	#000000	##000000
##4274DD	1.00	4.40	4.77	4.77
#FFFFFF	4.40	1.00	21.00	21.00
#000000	4.77	21.00	1.00	1.00
##000000	4.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B80E1

Deuteranopia (green-blind)

#1172DB

Tritanopia (blue-blind)

#008D9E

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #4274dd;
/* rgb */ color: rgb(66, 116, 221);
/* oklch */ color: oklch(58.0% 0.169 263.0);

Tailwind

colors: {
  custom: {
    50: '#889be8',
    500: '#4274dd',
    950: '#000000',
  },
}

SCSS

$custom: #4274dd;
$custom-light: #889be8;
$custom-dark: #000000;

JSON

{
  "hex": "#4274dd",
  "rgb": {
    "r": 66,
    "g": 116,
    "b": 221
  },
  "hsl": {
    "h": 220.645,
    "s": 69.507,
    "l": 56.275
  },
  "oklch": {
    "l": 0.57967,
    "c": 0.16943,
    "h": 263
  },
  "luminance": 0.18869
}

Semantic roles & 50–950 ramp

primary

#4274DD

secondary

#DDC99D

accent

#B33BEC

background

#F9F9FE

surface

#F1F2FD

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #4274DD

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

Preview Lab → · Contrast checker → · Palette generator →