#1B45AA#1B45AA

#1B45AA is a dark, vivid blue. Relative luminance 0.074; OKLCH L 42.9% C 0.169 H 263.7°. Best body text is #FFFFFF at 8.47:1 contrast (WCAG AA passes).

Color values

HEX	#1B45AA
RGB	rgb(27, 69, 170)
HSL	hsl(222, 73%, 39%)
HSV	hsv(222, 84%, 67%)
CMYK	cmyk(84.1%, 59.4%, 0%, 33.3%)
CIE-LAB	lab(32.68, 24.90, -58.02)
CIE-LCH	lch(32.68, 63.14, 293.22°)
OKLab	oklab(42.87% -0.0187 -0.1678)
OKLCH	oklch(42.87% 0.169 263.7)
XYZ	xyz(9.8332, 7.3903, 38.9306)
Luminance	0.0739 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B45AA #AA801B

analogous

#1B8CAA #1B45AA #391BAA

triadic

#1B45AA #AA1B45 #45AA1B

tetradic

#1B45AA #AA1B8C #AA801B #1BAA39

square

#1B45AA #AA1B8C #AA801B #1BAA39

split-complementary

#1B45AA #AA391B #8CAA1B

monochromatic

#0A1A40 #133075 #1B45AA #265BDC #5B83E5

Accessibility & contrast

On white

8.47

#1B45AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#1B45AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B45AA

8.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B45AA	#FFFFFF	#000000	##FFFFFF
##1B45AA	1.00	8.47	2.48	8.47
#FFFFFF	8.47	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054AD

Deuteranopia (green-blind)

#0047A8

Tritanopia (blue-blind)

#005F70

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1b45aa;
/* rgb */ color: rgb(27, 69, 170);
/* oklch */ color: oklch(42.9% 0.169 263.7);

Tailwind

colors: {
  custom: {
    50: '#7278c4',
    500: '#1b45aa',
    950: '#000000',
  },
}

SCSS

$custom: #1b45aa;
$custom-light: #7278c4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b45aa",
  "rgb": {
    "r": 27,
    "g": 69,
    "b": 170
  },
  "hsl": {
    "h": 222.378,
    "s": 72.589,
    "l": 38.627
  },
  "oklch": {
    "l": 0.42872,
    "c": 0.16883,
    "h": 263.7
  },
  "luminance": 0.07392
}

Semantic roles & 50–950 ramp

primary

#1B45AA

secondary

#C9A858

accent

#BA39EF

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#090813

muted

#7B7B82

Preview Lab

Preview with #1B45AA

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

Preview Lab → · Contrast checker → · Palette generator →