#228CB3#228CB3

#228CB3 is a mid, moderate cyan. Relative luminance 0.224; OKLCH L 60.0% C 0.108 H 228.4°. Best body text is #000000 at 5.47:1 contrast (WCAG AA passes).

Color values

HEX	#228CB3
RGB	rgb(34, 140, 179)
HSL	hsl(196, 68%, 42%)
HSV	hsv(196, 81%, 70%)
CMYK	cmyk(81%, 21.8%, 0%, 29.8%)
CIE-LAB	lab(54.40, -15.39, -28.69)
CIE-LCH	lch(54.40, 32.56, 241.80°)
OKLab	oklab(60.03% -0.0716 -0.0807)
OKLCH	oklch(60.03% 0.108 228.4)
XYZ	xyz(18.1711, 22.3487, 45.9951)
Luminance	0.2235 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#228CB3 #B34922

analogous

#22B392 #228CB3 #2244B3

triadic

#228CB3 #B3228C #8CB322

tetradic

#228CB3 #9222B3 #B34922 #44B322

square

#228CB3 #9222B3 #B34922 #44B322

split-complementary

#228CB3 #B32244 #B39222

monochromatic

#0E3C4C #186480 #228CB3 #39AED9 #6CC3E3

Accessibility & contrast

On white

3.84

#228CB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.47

#228CB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #228CB3

5.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##228CB3	#FFFFFF	#000000	##000000
##228CB3	1.00	3.84	5.47	5.47
#FFFFFF	3.84	1.00	21.00	21.00
#000000	5.47	21.00	1.00	1.00
##000000	5.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#778AB5

Deuteranopia (green-blind)

#657CB2

Tritanopia (blue-blind)

#009799

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #228cb3;
/* rgb */ color: rgb(34, 140, 179);
/* oklch */ color: oklch(60.0% 0.108 228.4);

Tailwind

colors: {
  custom: {
    50: '#76adca',
    500: '#228cb3',
    950: '#000000',
  },
}

SCSS

$custom: #228cb3;
$custom-light: #76adca;
$custom-dark: #000000;

JSON

{
  "hex": "#228cb3",
  "rgb": {
    "r": 34,
    "g": 140,
    "b": 179
  },
  "hsl": {
    "h": 196.138,
    "s": 68.075,
    "l": 41.765
  },
  "oklch": {
    "l": 0.60026,
    "c": 0.10793,
    "h": 228.4
  },
  "luminance": 0.22351
}

Semantic roles & 50–950 ramp

primary

#228CB3

secondary

#C98268

accent

#6C3DEB

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #228CB3

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

Preview Lab → · Contrast checker → · Palette generator →