#4281D9#4281D9

#4281D9 is a mid, vivid cyan. Relative luminance 0.219; OKLCH L 60.5% C 0.149 H 257.2°. Best body text is #000000 at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#4281D9
RGB	rgb(66, 129, 217)
HSL	hsl(215, 67%, 55%)
HSV	hsv(215, 70%, 85%)
CMYK	cmyk(69.6%, 40.6%, 0%, 14.9%)
CIE-LAB	lab(53.88, 8.61, -51.02)
CIE-LCH	lch(53.88, 51.74, 279.58°)
OKLab	oklab(60.48% -0.0329 -0.1456)
OKLCH	oklch(60.48% 0.149 257.2)
XYZ	xyz(22.6169, 21.8661, 68.6608)
Luminance	0.2187 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4281D9 #D99A42

analogous

#42CCD9 #4281D9 #4E42D9

triadic

#4281D9 #D94281 #81D942

tetradic

#4281D9 #D942CC #D99A42 #42D94E

square

#4281D9 #D942CC #D99A42 #42D94E

split-complementary

#4281D9 #D94E42 #CCD942

monochromatic

#1B4786 #2563B9 #4281D9 #75A3E3 #A8C5ED

Accessibility & contrast

On white

3.91

#4281D9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.37

#4281D9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4281D9

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4281D9	#FFFFFF	#000000	##000000
##4281D9	1.00	3.91	5.37	5.37
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.37	21.00	1.00	1.00
##000000	5.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5888DC

Deuteranopia (green-blind)

#407AD7

Tritanopia (blue-blind)

#0095A2

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #4281d9;
/* rgb */ color: rgb(66, 129, 217);
/* oklch */ color: oklch(60.5% 0.149 257.2);

Tailwind

colors: {
  custom: {
    50: '#87a5e5',
    500: '#4281d9',
    950: '#000000',
  },
}

SCSS

$custom: #4281d9;
$custom-light: #87a5e5;
$custom-dark: #000000;

JSON

{
  "hex": "#4281d9",
  "rgb": {
    "r": 66,
    "g": 129,
    "b": 217
  },
  "hsl": {
    "h": 214.967,
    "s": 66.52,
    "l": 55.49
  },
  "oklch": {
    "l": 0.60476,
    "c": 0.14924,
    "h": 257.2
  },
  "luminance": 0.21869
}

Semantic roles & 50–950 ramp

primary

#4281D9

secondary

#DBC19C

accent

#A23EE9

background

#F8FAFE

surface

#F0F4FC

border

#CBCED5

text

#0D0F16

muted

#7D7F84

Preview Lab

Preview with #4281D9

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

Preview Lab → · Contrast checker → · Palette generator →