#1B22A0#1B22A0

#1B22A0 is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.8% C 0.195 H 269.1°. Best body text is #FFFFFF at 11.78:1 contrast (WCAG AA passes).

Color values

HEX	#1B22A0
RGB	rgb(27, 34, 160)
HSL	hsl(237, 71%, 37%)
HSV	hsv(237, 83%, 63%)
CMYK	cmyk(83.1%, 78.8%, 0%, 37.3%)
CIE-LAB	lab(23.39, 43.42, -67.27)
CIE-LCH	lch(23.39, 80.06, 302.84°)
OKLab	oklab(35.8% -0.003 -0.1949)
OKLCH	oklch(35.8% 0.195 269.1)
XYZ	xyz(7.3670, 3.9143, 33.6181)
Luminance	0.0391 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B22A0 #A0991B

analogous

#1B65A0 #1B22A0 #571BA0

triadic

#1B22A0 #A01B22 #22A01B

tetradic

#1B22A0 #A01B65 #A0991B #1BA057

square

#1B22A0 #A01B65 #A0991B #1BA057

split-complementary

#1B22A0 #A0571B #65A01B

monochromatic

#090C37 #12176C #1B22A0 #242DD4 #535BE2

Accessibility & contrast

On white

11.78

#1B22A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#1B22A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B22A0

11.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B22A0	#FFFFFF	#000000	##FFFFFF
##1B22A0	1.00	11.78	1.78	11.78
#FFFFFF	11.78	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003EA4

Deuteranopia (green-blind)

#00319E

Tritanopia (blue-blind)

#004960

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1b22a0;
/* rgb */ color: rgb(27, 34, 160);
/* oklch */ color: oklch(35.8% 0.195 269.1);

Tailwind

colors: {
  custom: {
    50: '#735fbd',
    500: '#1b22a0',
    950: '#000000',
  },
}

SCSS

$custom: #1b22a0;
$custom-light: #735fbd;
$custom-dark: #000000;

JSON

{
  "hex": "#1b22a0",
  "rgb": {
    "r": 27,
    "g": 34,
    "b": 160
  },
  "hsl": {
    "h": 236.842,
    "s": 71.123,
    "l": 36.667
  },
  "oklch": {
    "l": 0.358,
    "c": 0.19491,
    "h": 269.1
  },
  "luminance": 0.03915
}

Semantic roles & 50–950 ramp

primary

#1B22A0

secondary

#C5BF52

accent

#E43AEE

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0512

muted

#7C7981

Preview Lab

Preview with #1B22A0

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

Preview Lab → · Contrast checker → · Palette generator →