#1B2AA0#1B2AA0

#1B2AA0 is a dark, vivid blue. Relative luminance 0.044; OKLCH L 37.0% C 0.187 H 268.3°. Best body text is #FFFFFF at 11.14:1 contrast (WCAG AA passes).

Color values

HEX	#1B2AA0
RGB	rgb(27, 42, 160)
HSL	hsl(233, 71%, 37%)
HSV	hsv(233, 83%, 63%)
CMYK	cmyk(83.1%, 73.8%, 0%, 37.3%)
CIE-LAB	lab(25.03, 38.76, -64.54)
CIE-LCH	lch(25.03, 75.29, 300.98°)
OKLab	oklab(36.97% -0.0054 -0.187)
OKLCH	oklch(36.97% 0.187 268.3)
XYZ	xyz(7.6229, 4.4261, 33.7034)
Luminance	0.0443 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2AA0 #A0911B

analogous

#1B6DA0 #1B2AA0 #4F1BA0

triadic

#1B2AA0 #A01B2A #2AA01B

tetradic

#1B2AA0 #A01B6D #A0911B #1BA04F

square

#1B2AA0 #A01B6D #A0911B #1BA04F

split-complementary

#1B2AA0 #A04F1B #6DA01B

monochromatic

#090F37 #121C6C #1B2AA0 #2438D4 #5363E2

Accessibility & contrast

On white

11.14

#1B2AA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#1B2AA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2AA0

11.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2AA0	#FFFFFF	#000000	##FFFFFF
##1B2AA0	1.00	11.14	1.89	11.14
#FFFFFF	11.14	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042A3

Deuteranopia (green-blind)

#00359E

Tritanopia (blue-blind)

#004C62

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1b2aa0;
/* rgb */ color: rgb(27, 42, 160);
/* oklch */ color: oklch(37.0% 0.187 268.3);

Tailwind

colors: {
  custom: {
    50: '#7264bd',
    500: '#1b2aa0',
    950: '#000000',
  },
}

SCSS

$custom: #1b2aa0;
$custom-light: #7264bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2aa0",
  "rgb": {
    "r": 27,
    "g": 42,
    "b": 160
  },
  "hsl": {
    "h": 233.233,
    "s": 71.123,
    "l": 36.667
  },
  "oklch": {
    "l": 0.36969,
    "c": 0.18713,
    "h": 268.3
  },
  "luminance": 0.04427
}

Semantic roles & 50–950 ramp

primary

#1B2AA0

secondary

#C5B852

accent

#DA3AEE

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#090512

muted

#7B7A81

Preview Lab

Preview with #1B2AA0

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

Preview Lab → · Contrast checker → · Palette generator →