#4291DD#4291DD

#4291DD is a light, vivid cyan. Relative luminance 0.266; OKLCH L 64.2% C 0.138 H 250.1°. Best body text is #000000 at 6.33:1 contrast (WCAG AA passes).

Color values

HEX	#4291DD
RGB	rgb(66, 145, 221)
HSL	hsl(209, 70%, 56%)
HSV	hsv(209, 70%, 87%)
CMYK	cmyk(70.1%, 34.4%, 0%, 13.3%)
CIE-LAB	lab(58.63, 0.47, -45.73)
CIE-LCH	lch(58.63, 45.73, 270.59°)
OKLab	oklab(64.25% -0.047 -0.1298)
OKLCH	oklch(64.25% 0.138 250.1)
XYZ	xyz(25.4184, 26.6267, 72.1925)
Luminance	0.2663 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4291DD #DD8E42

analogous

#42DDDB #4291DD #4244DD

triadic

#4291DD #DD4291 #91DD42

tetradic

#4291DD #DB42DD #DD8E42 #44DD42

square

#4291DD #DB42DD #DD8E42 #44DD42

split-complementary

#4291DD #DD4244 #DDDB42

monochromatic

#19538C #2272BF #4291DD #76AFE6 #AACDF0

Accessibility & contrast

On white

3.32

#4291DD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.33

#4291DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4291DD

6.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4291DD	#FFFFFF	#000000	##000000
##4291DD	1.00	3.32	6.33	6.33
#FFFFFF	3.32	1.00	21.00	21.00
#000000	6.33	21.00	1.00	1.00
##000000	6.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F95E0

Deuteranopia (green-blind)

#5986DC

Tritanopia (blue-blind)

#00A3AD

Achromatopsia (no color)

#8D8D8D

Design tokens & code

CSS

--color: #4291dd;
/* rgb */ color: rgb(66, 145, 221);
/* oklch */ color: oklch(64.2% 0.138 250.1);

Tailwind

colors: {
  custom: {
    50: '#88b0e8',
    500: '#4291dd',
    950: '#000000',
  },
}

SCSS

$custom: #4291dd;
$custom-light: #88b0e8;
$custom-dark: #000000;

JSON

{
  "hex": "#4291dd",
  "rgb": {
    "r": 66,
    "g": 145,
    "b": 221
  },
  "hsl": {
    "h": 209.419,
    "s": 69.507,
    "l": 56.275
  },
  "oklch": {
    "l": 0.64247,
    "c": 0.13809,
    "h": 250.1
  },
  "luminance": 0.2663
}

Semantic roles & 50–950 ramp

primary

#4291DD

secondary

#DDBD9D

accent

#923BEC

background

#F9FAFE

surface

#F1F4FC

border

#CBCED5

text

#0D1016

muted

#7E7F84

Preview Lab

Preview with #4291DD

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

Preview Lab → · Contrast checker → · Palette generator →