#1C66BE#1C66BE

#1C66BE is a mid, vivid cyan. Relative luminance 0.135; OKLCH L 51.6% C 0.155 H 255.8°. Best body text is #FFFFFF at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#1C66BE
RGB	rgb(28, 102, 190)
HSL	hsl(213, 74%, 43%)
HSV	hsv(213, 85%, 75%)
CMYK	cmyk(85.3%, 46.3%, 0%, 25.5%)
CIE-LAB	lab(43.46, 11.02, -52.34)
CIE-LCH	lch(43.46, 53.49, 281.89°)
OKLab	oklab(51.56% -0.038 -0.1504)
OKLCH	oklch(51.56% 0.155 255.8)
XYZ	xyz(14.5211, 13.4655, 50.5390)
Luminance	0.1347 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C66BE #BE741C

analogous

#1CB7BE #1C66BE #231CBE

triadic

#1C66BE #BE1C66 #66BE1C

tetradic

#1C66BE #BE1CB7 #BE741C #1CBE23

square

#1C66BE #BE1CB7 #BE741C #1CBE23

split-complementary

#1C66BE #BE231C #B7BE1C

monochromatic

#0C2D53 #144989 #1C66BE #3684E1 #6BA5E9

Accessibility & contrast

On white

5.69

#1C66BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#1C66BE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1C66BE

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C66BE	#FFFFFF	#000000	##FFFFFF
##1C66BE	1.00	5.69	3.69	5.69
#FFFFFF	5.69	1.00	21.00	1.00
#000000	3.69	21.00	1.00	21.00
##FFFFFF	5.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#356EC1

Deuteranopia (green-blind)

#0460BC

Tritanopia (blue-blind)

#007B89

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #1c66be;
/* rgb */ color: rgb(28, 102, 190);
/* oklch */ color: oklch(51.6% 0.155 255.8);

Tailwind

colors: {
  custom: {
    50: '#7691d2',
    500: '#1c66be',
    950: '#000000',
  },
}

SCSS

$custom: #1c66be;
$custom-light: #7691d2;
$custom-dark: #000000;

JSON

{
  "hex": "#1c66be",
  "rgb": {
    "r": 28,
    "g": 102,
    "b": 190
  },
  "hsl": {
    "h": 212.593,
    "s": 74.312,
    "l": 42.745
  },
  "oklch": {
    "l": 0.51558,
    "c": 0.15515,
    "h": 255.8
  },
  "luminance": 0.13467
}

Semantic roles & 50–950 ramp

primary

#1C66BE

secondary

#CF9F67

accent

#9C37F1

background

#F7F8FD

surface

#EEF0FA

border

#C9CBD3

text

#0A0C14

muted

#7C7D83

Preview Lab

Preview with #1C66BE

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

Preview Lab → · Contrast checker → · Palette generator →