#1B45A6#1B45A6

#1B45A6 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.5% C 0.163 H 263.4°. Best body text is #FFFFFF at 8.58:1 contrast (WCAG AA passes).

Color values

HEX	#1B45A6
RGB	rgb(27, 69, 166)
HSL	hsl(222, 72%, 38%)
HSV	hsv(222, 84%, 65%)
CMYK	cmyk(83.7%, 58.4%, 0%, 34.9%)
CIE-LAB	lab(32.35, 23.31, -56.16)
CIE-LCH	lch(32.35, 60.81, 292.54°)
OKLab	oklab(42.52% -0.0189 -0.1623)
OKLCH	oklch(42.52% 0.163 263.4)
XYZ	xyz(9.4606, 7.2413, 36.9681)
Luminance	0.0724 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B45A6 #A67C1B

analogous

#1B8AA6 #1B45A6 #371BA6

triadic

#1B45A6 #A61B45 #45A61B

tetradic

#1B45A6 #A61B8A #A67C1B #1BA637

square

#1B45A6 #A61B8A #A67C1B #1BA637

split-complementary

#1B45A6 #A6371B #8AA61B

monochromatic

#0A193D #122F71 #1B45A6 #245BDB #5882E4

Accessibility & contrast

On white

8.58

#1B45A6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#1B45A6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B45A6

8.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B45A6	#FFFFFF	#000000	##FFFFFF
##1B45A6	1.00	8.58	2.45	8.58
#FFFFFF	8.58	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053A9

Deuteranopia (green-blind)

#0046A4

Tritanopia (blue-blind)

#005E6E

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1b45a6;
/* rgb */ color: rgb(27, 69, 166);
/* oklch */ color: oklch(42.5% 0.163 263.4);

Tailwind

colors: {
  custom: {
    50: '#7178c1',
    500: '#1b45a6',
    950: '#000000',
  },
}

SCSS

$custom: #1b45a6;
$custom-light: #7178c1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b45a6",
  "rgb": {
    "r": 27,
    "g": 69,
    "b": 166
  },
  "hsl": {
    "h": 221.871,
    "s": 72.021,
    "l": 37.843
  },
  "oklch": {
    "l": 0.42522,
    "c": 0.16344,
    "h": 263.4
  },
  "luminance": 0.07242
}

Semantic roles & 50–950 ramp

primary

#1B45A6

secondary

#C7A556

accent

#B839EF

background

#F7F7FC

surface

#EDEDF8

border

#C8C8D1

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1B45A6

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

Preview Lab → · Contrast checker → · Palette generator →