#1E66B3#1E66B3

#1E66B3 is a mid, vivid cyan. Relative luminance 0.130; OKLCH L 50.8% C 0.140 H 253.7°. Best body text is #FFFFFF at 5.82:1 contrast (WCAG AA passes).

Color values

HEX	#1E66B3
RGB	rgb(30, 102, 179)
HSL	hsl(211, 71%, 41%)
HSV	hsv(211, 83%, 70%)
CMYK	cmyk(83.2%, 43%, 0%, 29.8%)
CIE-LAB	lab(42.81, 6.87, -46.96)
CIE-LCH	lch(42.81, 47.46, 278.32°)
OKLab	oklab(50.85% -0.0393 -0.1346)
OKLCH	oklch(50.85% 0.14 253.7)
XYZ	xyz(13.4204, 13.0318, 44.4471)
Luminance	0.1303 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1E66B3 #B36B1E

analogous

#1EB0B3 #1E66B3 #211EB3

triadic

#1E66B3 #B31E66 #66B31E

tetradic

#1E66B3 #B31EB0 #B36B1E #1EB321

square

#1E66B3 #B31EB0 #B36B1E #1EB321

split-complementary

#1E66B3 #B3211E #B0B31E

monochromatic

#0C2A4A #15487F #1E66B3 #3284DD #66A4E5

Accessibility & contrast

On white

5.82

#1E66B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.61

#1E66B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1E66B3

5.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1E66B3	#FFFFFF	#000000	##FFFFFF
##1E66B3	1.00	5.82	3.61	5.82
#FFFFFF	5.82	1.00	21.00	1.00
#000000	3.61	21.00	1.00	21.00
##FFFFFF	5.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F6CB6

Deuteranopia (green-blind)

#225FB1

Tritanopia (blue-blind)

#007884

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #1e66b3;
/* rgb */ color: rgb(30, 102, 179);
/* oklch */ color: oklch(50.8% 0.140 253.7);

Tailwind

colors: {
  custom: {
    50: '#7491ca',
    500: '#1e66b3',
    950: '#000000',
  },
}

SCSS

$custom: #1e66b3;
$custom-light: #7491ca;
$custom-dark: #000000;

JSON

{
  "hex": "#1e66b3",
  "rgb": {
    "r": 30,
    "g": 102,
    "b": 179
  },
  "hsl": {
    "h": 211.007,
    "s": 71.292,
    "l": 40.98
  },
  "oklch": {
    "l": 0.50848,
    "c": 0.14021,
    "h": 253.7
  },
  "luminance": 0.13033
}

Semantic roles & 50–950 ramp

primary

#1E66B3

secondary

#CB9862

accent

#973AEE

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #1E66B3

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

Preview Lab → · Contrast checker → · Palette generator →