#1D66AA#1D66AA

#1D66AA is a mid, vivid cyan. Relative luminance 0.127; OKLCH L 50.2% C 0.129 H 251.0°. Best body text is #FFFFFF at 5.94:1 contrast (WCAG AA passes).

Color values

HEX	#1D66AA
RGB	rgb(29, 102, 170)
HSL	hsl(209, 71%, 39%)
HSV	hsv(209, 83%, 67%)
CMYK	cmyk(82.9%, 40%, 0%, 33.3%)
CIE-LAB	lab(42.25, 3.25, -42.57)
CIE-LCH	lch(42.25, 42.70, 274.37°)
OKLab	oklab(50.23% -0.0419 -0.1217)
OKLCH	oklch(50.23% 0.129 251)
XYZ	xyz(12.5110, 12.6647, 39.8076)
Luminance	0.1267 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D66AA #AA611D

analogous

#1DAAA8 #1D66AA #1D20AA

triadic

#1D66AA #AA1D66 #66AA1D

tetradic

#1D66AA #A81DAA #AA611D #20AA1D

square

#1D66AA #A81DAA #AA611D #20AA1D

split-complementary

#1D66AA #AA1D20 #AAA81D

monochromatic

#0B2741 #144776 #1D66AA #2A85DB #5EA3E4

Accessibility & contrast

On white

5.94

#1D66AA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.53

#1D66AA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1D66AA

5.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D66AA	#FFFFFF	#000000	##FFFFFF
##1D66AA	1.00	5.94	3.53	5.94
#FFFFFF	5.94	1.00	21.00	1.00
#000000	3.53	21.00	1.00	21.00
##FFFFFF	5.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#456BAD

Deuteranopia (green-blind)

#2E5EA9

Tritanopia (blue-blind)

#007680

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #1d66aa;
/* rgb */ color: rgb(29, 102, 170);
/* oklch */ color: oklch(50.2% 0.129 251.0);

Tailwind

colors: {
  custom: {
    50: '#7191c4',
    500: '#1d66aa',
    950: '#000000',
  },
}

SCSS

$custom: #1d66aa;
$custom-light: #7191c4;
$custom-dark: #000000;

JSON

{
  "hex": "#1d66aa",
  "rgb": {
    "r": 29,
    "g": 102,
    "b": 170
  },
  "hsl": {
    "h": 208.936,
    "s": 70.854,
    "l": 39.02
  },
  "oklch": {
    "l": 0.50234,
    "c": 0.12869,
    "h": 251
  },
  "luminance": 0.12666
}

Semantic roles & 50–950 ramp

primary

#1D66AA

secondary

#C88F5B

accent

#913AEE

background

#F7F8FC

surface

#EDF0F8

border

#C8CBD1

text

#090C12

muted

#7B7D81

Preview Lab

Preview with #1D66AA

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

Preview Lab → · Contrast checker → · Palette generator →