#1B2AA1#1B2AA1

#1B2AA1 is a dark, vivid blue. Relative luminance 0.045; OKLCH L 37.1% C 0.188 H 268.3°. Best body text is #FFFFFF at 11.10:1 contrast (WCAG AA passes).

Color values

HEX	#1B2AA1
RGB	rgb(27, 42, 161)
HSL	hsl(233, 71%, 37%)
HSV	hsv(233, 83%, 63%)
CMYK	cmyk(83.2%, 73.9%, 0%, 36.9%)
CIE-LAB	lab(25.14, 39.12, -64.97)
CIE-LCH	lch(25.14, 75.84, 301.05°)
OKLab	oklab(37.08% -0.0056 -0.1883)
OKLCH	oklch(37.08% 0.188 268.3)
XYZ	xyz(7.7108, 4.4612, 34.1660)
Luminance	0.0446 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2AA1 #A1921B

analogous

#1B6DA1 #1B2AA1 #4F1BA1

triadic

#1B2AA1 #A11B2A #2AA11B

tetradic

#1B2AA1 #A11B6D #A1921B #1BA14F

square

#1B2AA1 #A11B6D #A1921B #1BA14F

split-complementary

#1B2AA1 #A14F1B #6DA11B

monochromatic

#090F38 #121C6D #1B2AA1 #2438D5 #5464E2

Accessibility & contrast

On white

11.10

#1B2AA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#1B2AA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2AA1

11.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2AA1	#FFFFFF	#000000	##FFFFFF
##1B2AA1	1.00	11.10	1.89	11.10
#FFFFFF	11.10	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042A5

Deuteranopia (green-blind)

#00359F

Tritanopia (blue-blind)

#004D63

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1b2aa1;
/* rgb */ color: rgb(27, 42, 161);
/* oklch */ color: oklch(37.1% 0.188 268.3);

Tailwind

colors: {
  custom: {
    50: '#7264be',
    500: '#1b2aa1',
    950: '#000000',
  },
}

SCSS

$custom: #1b2aa1;
$custom-light: #7264be;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2aa1",
  "rgb": {
    "r": 27,
    "g": 42,
    "b": 161
  },
  "hsl": {
    "h": 233.284,
    "s": 71.277,
    "l": 36.863
  },
  "oklch": {
    "l": 0.37079,
    "c": 0.18838,
    "h": 268.3
  },
  "luminance": 0.04462
}

Semantic roles & 50–950 ramp

primary

#1B2AA1

secondary

#C5B852

accent

#DA3AEE

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#0A0512

muted

#7C7A81

Preview Lab

Preview with #1B2AA1

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

Preview Lab → · Contrast checker → · Palette generator →