#4291D9#4291D9

#4291D9 is a light, vivid cyan. Relative luminance 0.264; OKLCH L 64.0% C 0.133 H 248.8°. Best body text is #000000 at 6.28:1 contrast (WCAG AA passes).

Color values

HEX	#4291D9
RGB	rgb(66, 145, 217)
HSL	hsl(209, 67%, 55%)
HSV	hsv(209, 70%, 85%)
CMYK	cmyk(69.6%, 33.2%, 0%, 14.9%)
CIE-LAB	lab(58.43, -0.92, -43.81)
CIE-LCH	lch(58.43, 43.82, 268.79°)
OKLab	oklab(64.03% -0.0481 -0.1242)
OKLCH	oklch(64.03% 0.133 248.8)
XYZ	xyz(24.8918, 26.4161, 69.4192)
Luminance	0.2642 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4291D9 #D98A42

analogous

#42D9D5 #4291D9 #4245D9

triadic

#4291D9 #D94291 #91D942

tetradic

#4291D9 #D542D9 #D98A42 #45D942

square

#4291D9 #D542D9 #D98A42 #45D942

split-complementary

#4291D9 #D94245 #D9D542

monochromatic

#1B5386 #2572B9 #4291D9 #75AFE3 #A8CCED

Accessibility & contrast

On white

3.34

#4291D9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.28

#4291D9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4291D9

6.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4291D9	#FFFFFF	#000000	##000000
##4291D9	1.00	3.34	6.28	6.28
#FFFFFF	3.34	1.00	21.00	21.00
#000000	6.28	21.00	1.00	1.00
##000000	6.28	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7194DC

Deuteranopia (green-blind)

#5B86D8

Tritanopia (blue-blind)

#00A2AB

Achromatopsia (no color)

#8C8C8C

Design tokens & code

CSS

--color: #4291d9;
/* rgb */ color: rgb(66, 145, 217);
/* oklch */ color: oklch(64.0% 0.133 248.8);

Tailwind

colors: {
  custom: {
    50: '#87b0e5',
    500: '#4291d9',
    950: '#000000',
  },
}

SCSS

$custom: #4291d9;
$custom-light: #87b0e5;
$custom-dark: #000000;

JSON

{
  "hex": "#4291d9",
  "rgb": {
    "r": 66,
    "g": 145,
    "b": 217
  },
  "hsl": {
    "h": 208.609,
    "s": 66.52,
    "l": 55.49
  },
  "oklch": {
    "l": 0.64027,
    "c": 0.13322,
    "h": 248.8
  },
  "luminance": 0.26419
}

Semantic roles & 50–950 ramp

primary

#4291D9

secondary

#DBBA9C

accent

#903EE9

background

#F8FAFE

surface

#F0F4FC

border

#CBCED5

text

#0D1016

muted

#7D7F84

Preview Lab

Preview with #4291D9

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

Preview Lab → · Contrast checker → · Palette generator →