#1D64B4#1D64B4

#1D64B4 is a mid, vivid cyan. Relative luminance 0.127; OKLCH L 50.4% C 0.144 H 254.7°. Best body text is #FFFFFF at 5.94:1 contrast (WCAG AA passes).

Color values

HEX	#1D64B4
RGB	rgb(29, 100, 180)
HSL	hsl(212, 72%, 41%)
HSV	hsv(212, 84%, 71%)
CMYK	cmyk(83.9%, 44.4%, 0%, 29.4%)
CIE-LAB	lab(42.26, 8.45, -48.43)
CIE-LCH	lch(42.26, 49.16, 279.90°)
OKLab	oklab(50.43% -0.038 -0.1389)
OKLCH	oklch(50.43% 0.144 254.7)
XYZ	xyz(13.2990, 12.6692, 44.9156)
Luminance	0.1267 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D64B4 #B46D1D

analogous

#1DAFB4 #1D64B4 #211DB4

triadic

#1D64B4 #B41D64 #64B41D

tetradic

#1D64B4 #B41DAF #B46D1D #1DB421

square

#1D64B4 #B41DAF #B46D1D #1DB421

split-complementary

#1D64B4 #B4211D #AFB41D

monochromatic

#0C294B #15477F #1D64B4 #3082DE #65A2E6

Accessibility & contrast

On white

5.94

#1D64B4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.53

#1D64B4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1D64B4

5.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D64B4	#FFFFFF	#000000	##FFFFFF
##1D64B4	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)

#3A6BB7

Deuteranopia (green-blind)

#1A5EB2

Tritanopia (blue-blind)

#007783

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #1d64b4;
/* rgb */ color: rgb(29, 100, 180);
/* oklch */ color: oklch(50.4% 0.144 254.7);

Tailwind

colors: {
  custom: {
    50: '#748fcb',
    500: '#1d64b4',
    950: '#000000',
  },
}

SCSS

$custom: #1d64b4;
$custom-light: #748fcb;
$custom-dark: #000000;

JSON

{
  "hex": "#1d64b4",
  "rgb": {
    "r": 29,
    "g": 100,
    "b": 180
  },
  "hsl": {
    "h": 211.788,
    "s": 72.249,
    "l": 40.98
  },
  "oklch": {
    "l": 0.50434,
    "c": 0.14405,
    "h": 254.7
  },
  "luminance": 0.12671
}

Semantic roles & 50–950 ramp

primary

#1D64B4

secondary

#CB9A61

accent

#9939EF

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #1D64B4

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

Preview Lab → · Contrast checker → · Palette generator →