#4289B2#4289B2

#4289B2 is a mid, moderate cyan. Relative luminance 0.223; OKLCH L 60.2% C 0.095 H 236.6°. Best body text is #000000 at 5.45:1 contrast (WCAG AA passes).

Color values

HEX	#4289B2
RGB	rgb(66, 137, 178)
HSL	hsl(202, 46%, 48%)
HSV	hsv(202, 63%, 70%)
CMYK	cmyk(62.9%, 23%, 0%, 30.2%)
CIE-LAB	lab(54.30, -9.53, -28.20)
CIE-LCH	lch(54.30, 29.76, 251.33°)
OKLab	oklab(60.18% -0.0521 -0.079)
OKLCH	oklch(60.18% 0.095 236.6)
XYZ	xyz(19.2252, 22.2620, 45.3947)
Luminance	0.2226 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4289B2 #B26B42

analogous

#42B2A3 #4289B2 #4251B2

triadic

#4289B2 #B24289 #89B242

tetradic

#4289B2 #A342B2 #B26B42 #51B242

square

#4289B2 #A342B2 #B26B42 #51B242

split-complementary

#4289B2 #B24251 #B2A342

monochromatic

#214459 #316785 #4289B2 #6AA5C8 #96C0D8

Accessibility & contrast

On white

3.85

#4289B2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.45

#4289B2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4289B2

5.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4289B2	#FFFFFF	#000000	##000000
##4289B2	1.00	3.85	5.45	5.45
#FFFFFF	3.85	1.00	21.00	21.00
#000000	5.45	21.00	1.00	1.00
##000000	5.45	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7688B4

Deuteranopia (green-blind)

#667DB1

Tritanopia (blue-blind)

#009497

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #4289b2;
/* rgb */ color: rgb(66, 137, 178);
/* oklch */ color: oklch(60.2% 0.095 236.6);

Tailwind

colors: {
  custom: {
    50: '#81abc9',
    500: '#4289b2',
    950: '#000000',
  },
}

SCSS

$custom: #4289b2;
$custom-light: #81abc9;
$custom-dark: #000000;

JSON

{
  "hex": "#4289b2",
  "rgb": {
    "r": 66,
    "g": 137,
    "b": 178
  },
  "hsl": {
    "h": 201.964,
    "s": 45.902,
    "l": 47.843
  },
  "oklch": {
    "l": 0.60183,
    "c": 0.09466,
    "h": 236.6
  },
  "luminance": 0.22264
}

Semantic roles & 50–950 ramp

primary

#4289B2

secondary

#C4A08C

accent

#8252D6

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #4289B2

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

Preview Lab → · Contrast checker → · Palette generator →