#1633CD#1633CD

#1633CD is a dark, highly saturated blue. Relative luminance 0.069; OKLCH L 43.1% C 0.234 H 265.9°. Best body text is #FFFFFF at 8.79:1 contrast (WCAG AA passes).

Color values

HEX	#1633CD
RGB	rgb(22, 51, 205)
HSL	hsl(230, 81%, 45%)
HSV	hsv(230, 89%, 80%)
CMYK	cmyk(89.3%, 75.1%, 0%, 19.6%)
CIE-LAB	lab(31.68, 48.96, -80.31)
CIE-LCH	lch(31.68, 94.06, 301.37°)
OKLab	oklab(43.12% -0.0165 -0.2329)
OKLCH	oklch(43.12% 0.234 265.9)
XYZ	xyz(12.5303, 6.9444, 58.4257)
Luminance	0.0695 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1633CD #CDB016

analogous

#168FCD #1633CD #5516CD

triadic

#1633CD #CD1633 #33CD16

tetradic

#1633CD #CD168F #CDB016 #16CD55

square

#1633CD #CD168F #CDB016 #16CD55

split-complementary

#1633CD #CD5516 #8FCD16

monochromatic

#0A185E #102596 #1633CD #3753EA #6E82EF

Accessibility & contrast

On white

8.79

#1633CD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#1633CD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1633CD

8.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1633CD	#FFFFFF	#000000	##FFFFFF
##1633CD	1.00	8.79	2.39	8.79
#FFFFFF	8.79	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053D1

Deuteranopia (green-blind)

#0041CA

Tritanopia (blue-blind)

#00617E

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1633cd;
/* rgb */ color: rgb(22, 51, 205);
/* oklch */ color: oklch(43.1% 0.234 265.9);

Tailwind

colors: {
  custom: {
    50: '#7c6cde',
    500: '#1633cd',
    950: '#000000',
  },
}

SCSS

$custom: #1633cd;
$custom-light: #7c6cde;
$custom-dark: #000000;

JSON

{
  "hex": "#1633cd",
  "rgb": {
    "r": 22,
    "g": 51,
    "b": 205
  },
  "hsl": {
    "h": 230.492,
    "s": 80.617,
    "l": 44.51
  },
  "oklch": {
    "l": 0.43119,
    "c": 0.23352,
    "h": 265.9
  },
  "luminance": 0.06946
}

Semantic roles & 50–950 ramp

primary

#1633CD

secondary

#D5C469

accent

#D831F7

background

#F8F6FD

surface

#F0EBFB

border

#CBC6D4

text

#0C0715

muted

#7D7A83

Preview Lab

Preview with #1633CD

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

Preview Lab → · Contrast checker → · Palette generator →