#4289C0#4289C0

#4289C0 is a mid, moderate cyan. Relative luminance 0.229; OKLCH L 60.9% C 0.110 H 244.5°. Best body text is #000000 at 5.57:1 contrast (WCAG AA passes).

Color values

HEX	#4289C0
RGB	rgb(66, 137, 192)
HSL	hsl(206, 50%, 51%)
HSV	hsv(206, 66%, 75%)
CMYK	cmyk(65.6%, 28.6%, 0%, 24.7%)
CIE-LAB	lab(54.92, -4.85, -35.23)
CIE-LCH	lch(54.92, 35.56, 262.16°)
OKLab	oklab(60.88% -0.0474 -0.0993)
OKLCH	oklch(60.88% 0.11 244.5)
XYZ	xyz(20.7033, 22.8532, 53.1790)
Luminance	0.2286 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4289C0 #C07942

analogous

#42C0B8 #4289C0 #424AC0

triadic

#4289C0 #C04289 #89C042

tetradic

#4289C0 #B842C0 #C07942 #4AC042

square

#4289C0 #B842C0 #C07942 #4AC042

split-complementary

#4289C0 #C0424A #C0B842

monochromatic

#224866 #316994 #4289C0 #70A6CF #9EC2DF

Accessibility & contrast

On white

3.77

#4289C0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.57

#4289C0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4289C0

5.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4289C0	#FFFFFF	#000000	##000000
##4289C0	1.00	3.77	5.57	5.57
#FFFFFF	3.77	1.00	21.00	21.00
#000000	5.57	21.00	1.00	1.00
##000000	5.57	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#718AC2

Deuteranopia (green-blind)

#5F7EBF

Tritanopia (blue-blind)

#00969C

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #4289c0;
/* rgb */ color: rgb(66, 137, 192);
/* oklch */ color: oklch(60.9% 0.110 244.5);

Tailwind

colors: {
  custom: {
    50: '#83abd3',
    500: '#4289c0',
    950: '#000000',
  },
}

SCSS

$custom: #4289c0;
$custom-light: #83abd3;
$custom-dark: #000000;

JSON

{
  "hex": "#4289c0",
  "rgb": {
    "r": 66,
    "g": 137,
    "b": 192
  },
  "hsl": {
    "h": 206.19,
    "s": 50,
    "l": 50.588
  },
  "oklch": {
    "l": 0.60875,
    "c": 0.11009,
    "h": 244.5
  },
  "luminance": 0.22855
}

Semantic roles & 50–950 ramp

primary

#4289C0

secondary

#CBAB93

accent

#8B4EDA

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0C1014

muted

#7D7F82

Preview Lab

Preview with #4289C0

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

Preview Lab → · Contrast checker → · Palette generator →