#4288BF#4288BF

#4288BF is a mid, moderate cyan. Relative luminance 0.225; OKLCH L 60.6% C 0.110 H 244.8°. Best body text is #000000 at 5.51:1 contrast (WCAG AA passes).

Color values

HEX	#4288BF
RGB	rgb(66, 136, 191)
HSL	hsl(206, 49%, 50%)
HSV	hsv(206, 65%, 75%)
CMYK	cmyk(65.4%, 28.8%, 0%, 25.1%)
CIE-LAB	lab(54.58, -4.61, -35.19)
CIE-LCH	lch(54.58, 35.49, 262.53°)
OKLab	oklab(60.59% -0.0467 -0.0992)
OKLCH	oklch(60.59% 0.11 244.8)
XYZ	xyz(20.4514, 22.5261, 52.5503)
Luminance	0.2253 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4288BF #BF7942

analogous

#42BFB7 #4288BF #4249BF

triadic

#4288BF #BF4288 #88BF42

tetradic

#4288BF #B742BF #BF7942 #49BF42

square

#4288BF #B742BF #BF7942 #49BF42

split-complementary

#4288BF #BF4249 #BFB742

monochromatic

#224765 #326892 #4288BF #70A5CE #9DC2DE

Accessibility & contrast

On white

3.81

#4288BF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.51

#4288BF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4288BF

5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4288BF	#FFFFFF	#000000	##000000
##4288BF	1.00	3.81	5.51	5.51
#FFFFFF	3.81	1.00	21.00	21.00
#000000	5.51	21.00	1.00	1.00
##000000	5.51	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7089C1

Deuteranopia (green-blind)

#5E7DBE

Tritanopia (blue-blind)

#00959B

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #4288bf;
/* rgb */ color: rgb(66, 136, 191);
/* oklch */ color: oklch(60.6% 0.110 244.8);

Tailwind

colors: {
  custom: {
    50: '#83aad2',
    500: '#4288bf',
    950: '#000000',
  },
}

SCSS

$custom: #4288bf;
$custom-light: #83aad2;
$custom-dark: #000000;

JSON

{
  "hex": "#4288bf",
  "rgb": {
    "r": 66,
    "g": 136,
    "b": 191
  },
  "hsl": {
    "h": 206.4,
    "s": 49.407,
    "l": 50.392
  },
  "oklch": {
    "l": 0.60591,
    "c": 0.10968,
    "h": 244.8
  },
  "luminance": 0.22528
}

Semantic roles & 50–950 ramp

primary

#4288BF

secondary

#CAAB93

accent

#8C4FD9

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0C1014

muted

#7D7F82

Preview Lab

Preview with #4288BF

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

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