#1D64B1#1D64B1

#1D64B1 is a mid, vivid cyan. Relative luminance 0.126; OKLCH L 50.2% C 0.140 H 254.0°. Best body text is #FFFFFF at 5.98:1 contrast (WCAG AA passes).

Color values

HEX	#1D64B1
RGB	rgb(29, 100, 177)
HSL	hsl(211, 72%, 40%)
HSV	hsv(211, 84%, 69%)
CMYK	cmyk(83.6%, 43.5%, 0%, 30.6%)
CIE-LAB	lab(42.07, 7.27, -46.97)
CIE-LCH	lch(42.07, 47.53, 278.80°)
OKLab	oklab(50.23% -0.0386 -0.1347)
OKLCH	oklch(50.23% 0.14 254)
XYZ	xyz(12.9967, 12.5483, 43.3235)
Luminance	0.1255 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D64B1 #B16A1D

analogous

#1DAEB1 #1D64B1 #201DB1

triadic

#1D64B1 #B11D64 #64B11D

tetradic

#1D64B1 #B11DAE #B16A1D #1DB120

square

#1D64B1 #B11DAE #B16A1D #1DB120

split-complementary

#1D64B1 #B1201D #AEB11D

monochromatic

#0C2948 #14467C #1D64B1 #2E82DD #63A2E5

Accessibility & contrast

On white

5.98

#1D64B1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.51

#1D64B1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1D64B1

5.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D64B1	#FFFFFF	#000000	##FFFFFF
##1D64B1	1.00	5.98	3.51	5.98
#FFFFFF	5.98	1.00	21.00	1.00
#000000	3.51	21.00	1.00	21.00
##FFFFFF	5.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D6AB4

Deuteranopia (green-blind)

#1F5DAF

Tritanopia (blue-blind)

#007682

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #1d64b1;
/* rgb */ color: rgb(29, 100, 177);
/* oklch */ color: oklch(50.2% 0.140 254.0);

Tailwind

colors: {
  custom: {
    50: '#738fc9',
    500: '#1d64b1',
    950: '#000000',
  },
}

SCSS

$custom: #1d64b1;
$custom-light: #738fc9;
$custom-dark: #000000;

JSON

{
  "hex": "#1d64b1",
  "rgb": {
    "r": 29,
    "g": 100,
    "b": 177
  },
  "hsl": {
    "h": 211.216,
    "s": 71.845,
    "l": 40.392
  },
  "oklch": {
    "l": 0.5023,
    "c": 0.14009,
    "h": 254
  },
  "luminance": 0.1255
}

Semantic roles & 50–950 ramp

primary

#1D64B1

secondary

#CA9760

accent

#9839EF

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#090C13

muted

#7B7D82

Preview Lab

Preview with #1D64B1

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

Preview Lab → · Contrast checker → · Palette generator →