#1D66A6#1D66A6

#1D66A6 is a mid, vivid cyan. Relative luminance 0.125; OKLCH L 50.0% C 0.124 H 249.7°. Best body text is #FFFFFF at 5.99:1 contrast (WCAG AA passes).

Color values

HEX	#1D66A6
RGB	rgb(29, 102, 166)
HSL	hsl(208, 70%, 38%)
HSV	hsv(208, 83%, 65%)
CMYK	cmyk(82.5%, 38.6%, 0%, 34.9%)
CIE-LAB	lab(42.02, 1.69, -40.58)
CIE-LCH	lch(42.02, 40.61, 272.38°)
OKLab	oklab(49.98% -0.0429 -0.1158)
OKLCH	oklch(49.98% 0.124 249.7)
XYZ	xyz(12.1384, 12.5156, 37.8450)
Luminance	0.1252 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D66A6 #A65D1D

analogous

#1DA6A1 #1D66A6 #1D22A6

triadic

#1D66A6 #A61D66 #66A61D

tetradic

#1D66A6 #A11DA6 #A65D1D #22A61D

square

#1D66A6 #A11DA6 #A65D1D #22A61D

split-complementary

#1D66A6 #A61D22 #A6A11D

monochromatic

#0B263E #144672 #1D66A6 #2786D9 #5BA3E2

Accessibility & contrast

On white

5.99

#1D66A6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.50

#1D66A6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1D66A6

5.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D66A6	#FFFFFF	#000000	##FFFFFF
##1D66A6	1.00	5.99	3.50	5.99
#FFFFFF	5.99	1.00	21.00	1.00
#000000	3.50	21.00	1.00	21.00
##FFFFFF	5.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#476AA9

Deuteranopia (green-blind)

#325EA5

Tritanopia (blue-blind)

#00757E

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #1d66a6;
/* rgb */ color: rgb(29, 102, 166);
/* oklch */ color: oklch(50.0% 0.124 249.7);

Tailwind

colors: {
  custom: {
    50: '#7091c1',
    500: '#1d66a6',
    950: '#000000',
  },
}

SCSS

$custom: #1d66a6;
$custom-light: #7091c1;
$custom-dark: #000000;

JSON

{
  "hex": "#1d66a6",
  "rgb": {
    "r": 29,
    "g": 102,
    "b": 166
  },
  "hsl": {
    "h": 208.029,
    "s": 70.256,
    "l": 38.235
  },
  "oklch": {
    "l": 0.4998,
    "c": 0.12352,
    "h": 249.7
  },
  "luminance": 0.12517
}

Semantic roles & 50–950 ramp

primary

#1D66A6

secondary

#C68C59

accent

#8E3BED

background

#F7F8FB

surface

#EDF0F7

border

#C8CBD0

text

#090C12

muted

#7B7D81

Preview Lab

Preview with #1D66A6

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

Preview Lab → · Contrast checker → · Palette generator →