#4291D8#4291D8

#4291D8 is a light, vivid cyan. Relative luminance 0.264; OKLCH L 64.0% C 0.132 H 248.5°. Best body text is #000000 at 6.27:1 contrast (WCAG AA passes).

Color values

HEX	#4291D8
RGB	rgb(66, 145, 216)
HSL	hsl(208, 66%, 55%)
HSV	hsv(208, 69%, 85%)
CMYK	cmyk(69.4%, 32.9%, 0%, 15.3%)
CIE-LAB	lab(58.38, -1.27, -43.33)
CIE-LCH	lch(58.38, 43.34, 268.32°)
OKLab	oklab(63.97% -0.0483 -0.1228)
OKLCH	oklch(63.97% 0.132 248.5)
XYZ	xyz(24.7622, 26.3642, 68.7362)
Luminance	0.2637 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4291D8 #D88942

analogous

#42D8D4 #4291D8 #4246D8

triadic

#4291D8 #D84291 #91D842

tetradic

#4291D8 #D442D8 #D88942 #46D842

square

#4291D8 #D442D8 #D88942 #46D842

split-complementary

#4291D8 #D84246 #D8D442

monochromatic

#1B5384 #2672B7 #4291D8 #75AFE2 #A7CCED

Accessibility & contrast

On white

3.35

#4291D8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.27

#4291D8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4291D8

6.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4291D8	#FFFFFF	#000000	##000000
##4291D8	1.00	3.35	6.27	6.27
#FFFFFF	3.35	1.00	21.00	21.00
#000000	6.27	21.00	1.00	1.00
##000000	6.27	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7194DB

Deuteranopia (green-blind)

#5C86D7

Tritanopia (blue-blind)

#00A2AB

Achromatopsia (no color)

#8C8C8C

Design tokens & code

CSS

--color: #4291d8;
/* rgb */ color: rgb(66, 145, 216);
/* oklch */ color: oklch(64.0% 0.132 248.5);

Tailwind

colors: {
  custom: {
    50: '#87b0e4',
    500: '#4291d8',
    950: '#000000',
  },
}

SCSS

$custom: #4291d8;
$custom-light: #87b0e4;
$custom-dark: #000000;

JSON

{
  "hex": "#4291d8",
  "rgb": {
    "r": 66,
    "g": 145,
    "b": 216
  },
  "hsl": {
    "h": 208.4,
    "s": 65.789,
    "l": 55.294
  },
  "oklch": {
    "l": 0.63973,
    "c": 0.132,
    "h": 248.5
  },
  "luminance": 0.26367
}

Semantic roles & 50–950 ramp

primary

#4291D8

secondary

#DAB99C

accent

#8F3FE9

background

#F8FAFE

surface

#F0F4FC

border

#CBCED5

text

#0D1015

muted

#7D7F84

Preview Lab

Preview with #4291D8

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

Preview Lab → · Contrast checker → · Palette generator →