#4291BB#4291BB

#4291BB is a light, moderate cyan. Relative luminance 0.250; OKLCH L 62.5% C 0.100 H 234.8°. Best body text is #000000 at 6.00:1 contrast (WCAG AA passes).

Color values

HEX	#4291BB
RGB	rgb(66, 145, 187)
HSL	hsl(201, 48%, 50%)
HSV	hsv(201, 65%, 73%)
CMYK	cmyk(64.7%, 22.5%, 0%, 26.7%)
CIE-LAB	lab(57.07, -11.07, -29.04)
CIE-LCH	lch(57.07, 31.08, 249.13°)
OKLab	oklab(62.51% -0.0575 -0.0814)
OKLCH	oklch(62.51% 0.1 234.8)
XYZ	xyz(21.3383, 24.9947, 50.7040)
Luminance	0.2500 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4291BB #BB6C42

analogous

#42BBA8 #4291BB #4255BB

triadic

#4291BB #BB4291 #91BB42

tetradic

#4291BB #A842BB #BB6C42 #55BB42

square

#4291BB #A842BB #BB6C42 #55BB42

split-complementary

#4291BB #BB4255 #BBA842

monochromatic

#224B61 #326E8E #4291BB #6EABCC #9CC6DC

Accessibility & contrast

On white

3.50

#4291BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.00

#4291BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4291BB

6.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4291BB	#FFFFFF	#000000	##000000
##4291BB	1.00	3.50	6.00	6.00
#FFFFFF	3.50	1.00	21.00	21.00
#000000	6.00	21.00	1.00	1.00
##000000	6.00	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7D90BD

Deuteranopia (green-blind)

#6C84BA

Tritanopia (blue-blind)

#009C9F

Achromatopsia (no color)

#898989

Design tokens & code

CSS

--color: #4291bb;
/* rgb */ color: rgb(66, 145, 187);
/* oklch */ color: oklch(62.5% 0.100 234.8);

Tailwind

colors: {
  custom: {
    50: '#83b1cf',
    500: '#4291bb',
    950: '#000000',
  },
}

SCSS

$custom: #4291bb;
$custom-light: #83b1cf;
$custom-dark: #000000;

JSON

{
  "hex": "#4291bb",
  "rgb": {
    "r": 66,
    "g": 145,
    "b": 187
  },
  "hsl": {
    "h": 200.826,
    "s": 47.826,
    "l": 49.608
  },
  "oklch": {
    "l": 0.62505,
    "c": 0.09968,
    "h": 234.8
  },
  "luminance": 0.24997
}

Semantic roles & 50–950 ramp

primary

#4291BB

secondary

#C8A491

accent

#7F50D7

background

#F8FAFC

surface

#F0F5F9

border

#CBCFD2

text

#0C1014

muted

#7D7F82

Preview Lab

Preview with #4291BB

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

Preview Lab → · Contrast checker → · Palette generator →