#4289C3#4289C3

#4289C3 is a mid, moderate cyan. Relative luminance 0.230; OKLCH L 61.0% C 0.114 H 245.8°. Best body text is #000000 at 5.60:1 contrast (WCAG AA passes).

Color values

HEX	#4289C3
RGB	rgb(66, 137, 195)
HSL	hsl(207, 52%, 51%)
HSV	hsv(207, 66%, 76%)
CMYK	cmyk(66.2%, 29.7%, 0%, 23.5%)
CIE-LAB	lab(55.06, -3.83, -36.71)
CIE-LCH	lch(55.06, 36.91, 264.04°)
OKLab	oklab(61.03% -0.0465 -0.1037)
OKLCH	oklch(61.03% 0.114 245.8)
XYZ	xyz(21.0391, 22.9875, 54.9474)
Luminance	0.2299 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4289C3 #C37C42

analogous

#42C3BC #4289C3 #4248C3

triadic

#4289C3 #C34289 #89C342

tetradic

#4289C3 #BC42C3 #C37C42 #48C342

square

#4289C3 #BC42C3 #C37C42 #48C342

split-complementary

#4289C3 #C34248 #C3BC42

monochromatic

#214969 #306998 #4289C3 #70A6D2 #9FC3E0

Accessibility & contrast

On white

3.75

#4289C3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.60

#4289C3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4289C3

5.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4289C3	#FFFFFF	#000000	##000000
##4289C3	1.00	3.75	5.60	5.60
#FFFFFF	3.75	1.00	21.00	21.00
#000000	5.60	21.00	1.00	1.00
##000000	5.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F8BC6

Deuteranopia (green-blind)

#5E7EC2

Tritanopia (blue-blind)

#00979D

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #4289c3;
/* rgb */ color: rgb(66, 137, 195);
/* oklch */ color: oklch(61.0% 0.114 245.8);

Tailwind

colors: {
  custom: {
    50: '#84abd5',
    500: '#4289c3',
    950: '#000000',
  },
}

SCSS

$custom: #4289c3;
$custom-light: #84abd5;
$custom-dark: #000000;

JSON

{
  "hex": "#4289c3",
  "rgb": {
    "r": 66,
    "g": 137,
    "b": 195
  },
  "hsl": {
    "h": 206.977,
    "s": 51.807,
    "l": 51.176
  },
  "oklch": {
    "l": 0.6103,
    "c": 0.11362,
    "h": 245.8
  },
  "luminance": 0.2299
}

Semantic roles & 50–950 ramp

primary

#4289C3

secondary

#CDAE94

accent

#8D4DDB

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0C1014

muted

#7D7F83

Preview Lab

Preview with #4289C3

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

Preview Lab → · Contrast checker → · Palette generator →