#1B22B4#1B22B4

#1B22B4 is a dark, highly saturated blue. Relative luminance 0.047; OKLCH L 38.2% C 0.218 H 268.3°. Best body text is #FFFFFF at 10.86:1 contrast (WCAG AA passes).

Color values

HEX	#1B22B4
RGB	rgb(27, 34, 180)
HSL	hsl(237, 74%, 41%)
HSV	hsv(237, 85%, 71%)
CMYK	cmyk(85%, 81.1%, 0%, 29.4%)
CIE-LAB	lab(25.78, 49.99, -75.37)
CIE-LCH	lch(25.78, 90.44, 303.56°)
OKLab	oklab(38.17% -0.0065 -0.2183)
OKLCH	oklch(38.17% 0.218 268.3)
XYZ	xyz(9.2594, 4.6712, 43.5848)
Luminance	0.0467 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B22B4 #B4AD1B

analogous

#1B6EB4 #1B22B4 #601BB4

triadic

#1B22B4 #B41B22 #22B41B

tetradic

#1B22B4 #B41B6E #B4AD1B #1BB460

square

#1B22B4 #B41B6E #B4AD1B #1BB460

split-complementary

#1B22B4 #B4601B #6EB41B

monochromatic

#0B0E4A #13187F #1B22B4 #2D35DF #6268E7

Accessibility & contrast

On white

10.86

#1B22B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#1B22B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B22B4

10.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B22B4	#FFFFFF	#000000	##FFFFFF
##1B22B4	1.00	10.86	1.93	10.86
#FFFFFF	10.86	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0045B8

Deuteranopia (green-blind)

#0035B2

Tritanopia (blue-blind)

#00516C

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1b22b4;
/* rgb */ color: rgb(27, 34, 180);
/* oklch */ color: oklch(38.2% 0.218 268.3);

Tailwind

colors: {
  custom: {
    50: '#7861cc',
    500: '#1b22b4',
    950: '#000000',
  },
}

SCSS

$custom: #1b22b4;
$custom-light: #7861cc;
$custom-dark: #000000;

JSON

{
  "hex": "#1b22b4",
  "rgb": {
    "r": 27,
    "g": 34,
    "b": 180
  },
  "hsl": {
    "h": 237.255,
    "s": 73.913,
    "l": 40.588
  },
  "oklch": {
    "l": 0.38165,
    "c": 0.21842,
    "h": 268.3
  },
  "luminance": 0.04672
}

Semantic roles & 50–950 ramp

primary

#1B22B4

secondary

#CCC75F

accent

#E837F1

background

#F8F5FC

surface

#EFEAF9

border

#CAC6D2

text

#0B0514

muted

#7C7982

Preview Lab

Preview with #1B22B4

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

Preview Lab → · Contrast checker → · Palette generator →