#1C66A9#1C66A9

#1C66A9 is a mid, vivid cyan. Relative luminance 0.126; OKLCH L 50.1% C 0.128 H 250.5°. Best body text is #FFFFFF at 5.96:1 contrast (WCAG AA passes).

Color values

HEX	#1C66A9
RGB	rgb(28, 102, 169)
HSL	hsl(209, 72%, 39%)
HSV	hsv(209, 83%, 66%)
CMYK	cmyk(83.4%, 39.6%, 0%, 33.7%)
CIE-LAB	lab(42.17, 2.77, -42.11)
CIE-LCH	lch(42.17, 42.20, 273.76°)
OKLab	oklab(50.15% -0.0426 -0.1203)
OKLCH	oklch(50.15% 0.128 250.5)
XYZ	xyz(12.3890, 12.6126, 39.3099)
Luminance	0.1261 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C66A9 #A95F1C

analogous

#1CA9A5 #1C66A9 #1C1FA9

triadic

#1C66A9 #A91C66 #66A91C

tetradic

#1C66A9 #A51CA9 #A95F1C #1FA91C

square

#1C66A9 #A51CA9 #A95F1C #1FA91C

split-complementary

#1C66A9 #A91C1F #A9A51C

monochromatic

#0B2740 #134674 #1C66A9 #2786DB #5BA3E4

Accessibility & contrast

On white

5.96

#1C66A9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.52

#1C66A9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1C66A9

5.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C66A9	#FFFFFF	#000000	##FFFFFF
##1C66A9	1.00	5.96	3.52	5.96
#FFFFFF	5.96	1.00	21.00	1.00
#000000	3.52	21.00	1.00	21.00
##FFFFFF	5.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#456AAC

Deuteranopia (green-blind)

#2F5EA8

Tritanopia (blue-blind)

#00767F

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #1c66a9;
/* rgb */ color: rgb(28, 102, 169);
/* oklch */ color: oklch(50.1% 0.128 250.5);

Tailwind

colors: {
  custom: {
    50: '#7191c3',
    500: '#1c66a9',
    950: '#000000',
  },
}

SCSS

$custom: #1c66a9;
$custom-light: #7191c3;
$custom-dark: #000000;

JSON

{
  "hex": "#1c66a9",
  "rgb": {
    "r": 28,
    "g": 102,
    "b": 169
  },
  "hsl": {
    "h": 208.511,
    "s": 71.574,
    "l": 38.627
  },
  "oklch": {
    "l": 0.50146,
    "c": 0.12765,
    "h": 250.5
  },
  "luminance": 0.12614
}

Semantic roles & 50–950 ramp

primary

#1C66A9

secondary

#C88E59

accent

#8F39EE

background

#F7F8FC

surface

#EDF0F8

border

#C8CBD1

text

#090C12

muted

#7B7D81

Preview Lab

Preview with #1C66A9

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

Preview Lab → · Contrast checker → · Palette generator →