#1A1B9F#1A1B9F

#1A1B9F is a dark, vivid blue. Relative luminance 0.035; OKLCH L 34.8% C 0.200 H 269.3°. Best body text is #FFFFFF at 12.34:1 contrast (WCAG AA passes).

Color values

HEX	#1A1B9F
RGB	rgb(26, 27, 159)
HSL	hsl(240, 72%, 36%)
HSV	hsv(240, 84%, 62%)
CMYK	cmyk(83.6%, 83%, 0%, 37.6%)
CIE-LAB	lab(21.97, 46.67, -69.02)
CIE-LCH	lch(21.97, 83.32, 304.07°)
OKLab	oklab(34.76% -0.0023 -0.1998)
OKLCH	oklch(34.76% 0.2 269.3)
XYZ	xyz(7.0738, 3.5058, 33.0980)
Luminance	0.0351 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A1B9F #9F9E1A

analogous

#1A5E9F #1A1B9F #5C1A9F

triadic

#1A1B9F #9F1A1B #1B9F1A

tetradic

#1A1B9F #9F1A5E #9F9E1A #1A9F5C

square

#1A1B9F #9F1A5E #9F9E1A #1A9F5C

split-complementary

#1A1B9F #9F5C1A #5E9F1A

monochromatic

#090936 #11126A #1A1B9F #2324D4 #5152E3

Accessibility & contrast

On white

12.34

#1A1B9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#1A1B9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A1B9F

12.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A1B9F	#FFFFFF	#000000	##FFFFFF
##1A1B9F	1.00	12.34	1.70	12.34
#FFFFFF	12.34	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003BA3

Deuteranopia (green-blind)

#002D9D

Tritanopia (blue-blind)

#00465E

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1a1b9f;
/* rgb */ color: rgb(26, 27, 159);
/* oklch */ color: oklch(34.8% 0.200 269.3);

Tailwind

colors: {
  custom: {
    50: '#735bbd',
    500: '#1a1b9f',
    950: '#000000',
  },
}

SCSS

$custom: #1a1b9f;
$custom-light: #735bbd;
$custom-dark: #000000;

JSON

{
  "hex": "#1a1b9f",
  "rgb": {
    "r": 26,
    "g": 27,
    "b": 159
  },
  "hsl": {
    "h": 239.549,
    "s": 71.892,
    "l": 36.275
  },
  "oklch": {
    "l": 0.34759,
    "c": 0.19985,
    "h": 269.3
  },
  "luminance": 0.03507
}

Semantic roles & 50–950 ramp

primary

#1A1B9F

secondary

#C5C450

accent

#ED39EF

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #1A1B9F

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

Preview Lab → · Contrast checker → · Palette generator →