#4289BA#4289BA

#4289BA is a mid, moderate cyan. Relative luminance 0.226; OKLCH L 60.6% C 0.103 H 241.4°. Best body text is #000000 at 5.52:1 contrast (WCAG AA passes).

Color values

HEX	#4289BA
RGB	rgb(66, 137, 186)
HSL	hsl(205, 48%, 49%)
HSV	hsv(205, 65%, 73%)
CMYK	cmyk(64.5%, 26.3%, 0%, 27.1%)
CIE-LAB	lab(54.65, -6.87, -32.23)
CIE-LCH	lch(54.65, 32.96, 257.96°)
OKLab	oklab(60.57% -0.0493 -0.0907)
OKLCH	oklch(60.57% 0.103 241.4)
XYZ	xyz(20.0520, 22.5927, 49.7489)
Luminance	0.2260 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4289BA #BA7342

analogous

#42BAAF #4289BA #424DBA

triadic

#4289BA #BA4289 #89BA42

tetradic

#4289BA #AF42BA #BA7342 #4DBA42

square

#4289BA #AF42BA #BA7342 #4DBA42

split-complementary

#4289BA #BA424D #BAAF42

monochromatic

#224660 #32688D #4289BA #6EA5CB #9BC1DB

Accessibility & contrast

On white

3.81

#4289BA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.52

#4289BA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4289BA

5.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4289BA	#FFFFFF	#000000	##000000
##4289BA	1.00	3.81	5.52	5.52
#FFFFFF	3.81	1.00	21.00	21.00
#000000	5.52	21.00	1.00	1.00
##000000	5.52	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7389BC

Deuteranopia (green-blind)

#627DB9

Tritanopia (blue-blind)

#00959A

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #4289ba;
/* rgb */ color: rgb(66, 137, 186);
/* oklch */ color: oklch(60.6% 0.103 241.4);

Tailwind

colors: {
  custom: {
    50: '#82abcf',
    500: '#4289ba',
    950: '#000000',
  },
}

SCSS

$custom: #4289ba;
$custom-light: #82abcf;
$custom-dark: #000000;

JSON

{
  "hex": "#4289ba",
  "rgb": {
    "r": 66,
    "g": 137,
    "b": 186
  },
  "hsl": {
    "h": 204.5,
    "s": 47.619,
    "l": 49.412
  },
  "oklch": {
    "l": 0.60572,
    "c": 0.10323,
    "h": 241.4
  },
  "luminance": 0.22595
}

Semantic roles & 50–950 ramp

primary

#4289BA

secondary

#C8A790

accent

#8851D7

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #4289BA

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

Preview Lab → · Contrast checker → · Palette generator →