#1633A1#1633A1

#1633A1 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 38.4% C 0.180 H 265.9°. Best body text is #FFFFFF at 10.38:1 contrast (WCAG AA passes).

Color values

HEX	#1633A1
RGB	rgb(22, 51, 161)
HSL	hsl(227, 76%, 36%)
HSV	hsv(227, 86%, 63%)
CMYK	cmyk(86.3%, 68.3%, 0%, 36.9%)
CIE-LAB	lab(27.05, 33.08, -61.84)
CIE-LCH	lch(27.05, 70.13, 298.14°)
OKLab	oklab(38.41% -0.0129 -0.1792)
OKLCH	oklch(38.41% 0.18 265.9)
XYZ	xyz(7.9455, 5.1104, 34.2789)
Luminance	0.0511 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1633A1 #A18416

analogous

#1678A1 #1633A1 #3E16A1

triadic

#1633A1 #A11633 #33A116

tetradic

#1633A1 #A11678 #A18416 #16A13E

square

#1633A1 #A11678 #A18416 #16A13E

split-complementary

#1633A1 #A13E16 #78A116

monochromatic

#071135 #0F226B #1633A1 #1D44D7 #4B6BE6

Accessibility & contrast

On white

10.38

#1633A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#1633A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1633A1

10.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1633A1	#FFFFFF	#000000	##FFFFFF
##1633A1	1.00	10.38	2.02	10.38
#FFFFFF	10.38	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047A4

Deuteranopia (green-blind)

#00399F

Tritanopia (blue-blind)

#005165

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1633a1;
/* rgb */ color: rgb(22, 51, 161);
/* oklch */ color: oklch(38.4% 0.180 265.9);

Tailwind

colors: {
  custom: {
    50: '#706abe',
    500: '#1633a1',
    950: '#000000',
  },
}

SCSS

$custom: #1633a1;
$custom-light: #706abe;
$custom-dark: #000000;

JSON

{
  "hex": "#1633a1",
  "rgb": {
    "r": 22,
    "g": 51,
    "b": 161
  },
  "hsl": {
    "h": 227.482,
    "s": 75.956,
    "l": 35.882
  },
  "oklch": {
    "l": 0.38407,
    "c": 0.17971,
    "h": 265.9
  },
  "luminance": 0.05111
}

Semantic roles & 50–950 ramp

primary

#1633A1

secondary

#C8AE4B

accent

#CB35F3

background

#F7F6FB

surface

#EDEBF7

border

#C8C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #1633A1

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

Preview Lab → · Contrast checker → · Palette generator →