#1B2A75#1B2A75

#1B2A75 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.5% C 0.129 H 269.1°. Best body text is #FFFFFF at 12.85:1 contrast (WCAG AA passes).

Color values

HEX	#1B2A75
RGB	rgb(27, 42, 117)
HSL	hsl(230, 63%, 28%)
HSV	hsv(230, 77%, 46%)
CMYK	cmyk(76.9%, 64.1%, 0%, 54.1%)
CIE-LAB	lab(20.72, 22.45, -44.80)
CIE-LCH	lch(20.72, 50.12, 296.62°)
OKLab	oklab(32.53% -0.002 -0.1294)
OKLCH	oklch(32.53% 0.129 269.1)
XYZ	xyz(4.4897, 3.1728, 17.2020)
Luminance	0.0317 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2A75 #75661B

analogous

#1B5775 #1B2A75 #391B75

triadic

#1B2A75 #751B2A #2A751B

tetradic

#1B2A75 #751B57 #75661B #1B7539

square

#1B2A75 #751B57 #75661B #1B7539

split-complementary

#1B2A75 #75391B #57751B

monochromatic

#060919 #101843 #1B2A75 #263CA7 #3952D1

Accessibility & contrast

On white

12.85

#1B2A75 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#1B2A75 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2A75

12.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2A75	#FFFFFF	#000000	##FFFFFF
##1B2A75	1.00	12.85	1.63	12.85
#FFFFFF	12.85	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003677

Deuteranopia (green-blind)

#002E74

Tritanopia (blue-blind)

#003D4B

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1b2a75;
/* rgb */ color: rgb(27, 42, 117);
/* oklch */ color: oklch(32.5% 0.129 269.1);

Tailwind

colors: {
  custom: {
    50: '#66639d',
    500: '#1b2a75',
    950: '#000000',
  },
}

SCSS

$custom: #1b2a75;
$custom-light: #66639d;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2a75",
  "rgb": {
    "r": 27,
    "g": 42,
    "b": 117
  },
  "hsl": {
    "h": 230,
    "s": 62.5,
    "l": 28.235
  },
  "oklch": {
    "l": 0.32531,
    "c": 0.12944,
    "h": 269.1
  },
  "luminance": 0.03173
}

Semantic roles & 50–950 ramp

primary

#1B2A75

secondary

#A99842

accent

#CA42E6

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#07050E

muted

#7A797E

Preview Lab

Preview with #1B2A75

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

Preview Lab → · Contrast checker → · Palette generator →