#1B45A8#1B45A8

#1B45A8 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 42.7% C 0.166 H 263.5°. Best body text is #FFFFFF at 8.53:1 contrast (WCAG AA passes).

Color values

HEX	#1B45A8
RGB	rgb(27, 69, 168)
HSL	hsl(222, 72%, 38%)
HSV	hsv(222, 84%, 66%)
CMYK	cmyk(83.9%, 58.9%, 0%, 34.1%)
CIE-LAB	lab(32.51, 24.11, -57.09)
CIE-LCH	lch(32.51, 61.98, 292.89°)
OKLab	oklab(42.7% -0.0188 -0.1651)
OKLCH	oklch(42.7% 0.166 263.5)
XYZ	xyz(9.6455, 7.3152, 37.9418)
Luminance	0.0732 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B45A8 #A87E1B

analogous

#1B8BA8 #1B45A8 #381BA8

triadic

#1B45A8 #A81B45 #45A81B

tetradic

#1B45A8 #A81B8B #A87E1B #1BA838

square

#1B45A8 #A81B8B #A87E1B #1BA838

split-complementary

#1B45A8 #A8381B #8BA81B

monochromatic

#0A1A3F #132F73 #1B45A8 #245BDC #5983E4

Accessibility & contrast

On white

8.53

#1B45A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#1B45A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B45A8

8.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B45A8	#FFFFFF	#000000	##FFFFFF
##1B45A8	1.00	8.53	2.46	8.53
#FFFFFF	8.53	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053AB

Deuteranopia (green-blind)

#0046A6

Tritanopia (blue-blind)

#005E6F

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1b45a8;
/* rgb */ color: rgb(27, 69, 168);
/* oklch */ color: oklch(42.7% 0.166 263.5);

Tailwind

colors: {
  custom: {
    50: '#7278c3',
    500: '#1b45a8',
    950: '#000000',
  },
}

SCSS

$custom: #1b45a8;
$custom-light: #7278c3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b45a8",
  "rgb": {
    "r": 27,
    "g": 69,
    "b": 168
  },
  "hsl": {
    "h": 222.128,
    "s": 72.308,
    "l": 38.235
  },
  "oklch": {
    "l": 0.42696,
    "c": 0.16614,
    "h": 263.5
  },
  "luminance": 0.07316
}

Semantic roles & 50–950 ramp

primary

#1B45A8

secondary

#C8A657

accent

#B939EF

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#090813

muted

#7B7B82

Preview Lab

Preview with #1B45A8

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

Preview Lab → · Contrast checker → · Palette generator →