#1B2C9F#1B2C9F

#1B2C9F is a dark, vivid blue. Relative luminance 0.045; OKLCH L 37.2% C 0.184 H 268.1°. Best body text is #FFFFFF at 11.01:1 contrast (WCAG AA passes).

Color values

HEX	#1B2C9F
RGB	rgb(27, 44, 159)
HSL	hsl(232, 71%, 36%)
HSV	hsv(232, 83%, 62%)
CMYK	cmyk(83%, 72.3%, 0%, 37.6%)
CIE-LAB	lab(25.37, 37.16, -63.38)
CIE-LCH	lch(25.37, 73.47, 300.39°)
OKLab	oklab(37.18% -0.0061 -0.1837)
OKLCH	oklch(37.18% 0.184 268.1)
XYZ	xyz(7.6085, 4.5367, 33.2688)
Luminance	0.0454 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2C9F #9F8E1B

analogous

#1B6E9F #1B2C9F #4C1B9F

triadic

#1B2C9F #9F1B2C #2C9F1B

tetradic

#1B2C9F #9F1B6E #9F8E1B #1B9F4C

square

#1B2C9F #9F1B6E #9F8E1B #1B9F4C

split-complementary

#1B2C9F #9F4C1B #6E9F1B

monochromatic

#090F36 #121E6B #1B2C9F #243AD3 #5365E2

Accessibility & contrast

On white

11.01

#1B2C9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#1B2C9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2C9F

11.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2C9F	#FFFFFF	#000000	##FFFFFF
##1B2C9F	1.00	11.01	1.91	11.01
#FFFFFF	11.01	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043A2

Deuteranopia (green-blind)

#00369D

Tritanopia (blue-blind)

#004D62

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1b2c9f;
/* rgb */ color: rgb(27, 44, 159);
/* oklch */ color: oklch(37.2% 0.184 268.1);

Tailwind

colors: {
  custom: {
    50: '#7166bd',
    500: '#1b2c9f',
    950: '#000000',
  },
}

SCSS

$custom: #1b2c9f;
$custom-light: #7166bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2c9f",
  "rgb": {
    "r": 27,
    "g": 44,
    "b": 159
  },
  "hsl": {
    "h": 232.273,
    "s": 70.968,
    "l": 36.471
  },
  "oklch": {
    "l": 0.37181,
    "c": 0.18376,
    "h": 268.1
  },
  "luminance": 0.04538
}

Semantic roles & 50–950 ramp

primary

#1B2C9F

secondary

#C5B651

accent

#D73AEE

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #1B2C9F

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

Preview Lab → · Contrast checker → · Palette generator →