#1D63B1#1D63B1

#1D63B1 is a mid, vivid cyan. Relative luminance 0.124; OKLCH L 50.0% C 0.141 H 254.5°. Best body text is #FFFFFF at 6.05:1 contrast (WCAG AA passes).

Color values

HEX	#1D63B1
RGB	rgb(29, 99, 177)
HSL	hsl(212, 72%, 40%)
HSV	hsv(212, 84%, 69%)
CMYK	cmyk(83.6%, 44.1%, 0%, 30.6%)
CIE-LAB	lab(41.78, 7.92, -47.45)
CIE-LCH	lch(41.78, 48.10, 279.47°)
OKLab	oklab(50% -0.0378 -0.1361)
OKLCH	oklch(50% 0.141 254.5)
XYZ	xyz(12.9014, 12.3576, 43.2917)
Luminance	0.1236 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D63B1 #B16B1D

analogous

#1DADB1 #1D63B1 #211DB1

triadic

#1D63B1 #B11D63 #63B11D

tetradic

#1D63B1 #B11DAD #B16B1D #1DB121

square

#1D63B1 #B11DAD #B16B1D #1DB121

split-complementary

#1D63B1 #B1211D #ADB11D

monochromatic

#0C2848 #14467C #1D63B1 #2E81DD #63A1E5

Accessibility & contrast

On white

6.05

#1D63B1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#1D63B1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1D63B1

6.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D63B1	#FFFFFF	#000000	##FFFFFF
##1D63B1	1.00	6.05	3.47	6.05
#FFFFFF	6.05	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B6AB4

Deuteranopia (green-blind)

#1C5CAF

Tritanopia (blue-blind)

#007681

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #1d63b1;
/* rgb */ color: rgb(29, 99, 177);
/* oklch */ color: oklch(50.0% 0.141 254.5);

Tailwind

colors: {
  custom: {
    50: '#738ec9',
    500: '#1d63b1',
    950: '#000000',
  },
}

SCSS

$custom: #1d63b1;
$custom-light: #738ec9;
$custom-dark: #000000;

JSON

{
  "hex": "#1d63b1",
  "rgb": {
    "r": 29,
    "g": 99,
    "b": 177
  },
  "hsl": {
    "h": 211.622,
    "s": 71.845,
    "l": 40.392
  },
  "oklch": {
    "l": 0.5,
    "c": 0.14122,
    "h": 254.5
  },
  "luminance": 0.12359
}

Semantic roles & 50–950 ramp

primary

#1D63B1

secondary

#CA9860

accent

#9939EF

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#090C13

muted

#7B7D82

Preview Lab

Preview with #1D63B1

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

Preview Lab → · Contrast checker → · Palette generator →