#1B48AD#1B48AD

#1B48AD is a dark, vivid blue. Relative luminance 0.079; OKLCH L 43.7% C 0.169 H 263.1°. Best body text is #FFFFFF at 8.15:1 contrast (WCAG AA passes).

Color values

HEX	#1B48AD
RGB	rgb(27, 72, 173)
HSL	hsl(222, 73%, 39%)
HSV	hsv(222, 84%, 68%)
CMYK	cmyk(84.4%, 58.4%, 0%, 32.2%)
CIE-LAB	lab(33.74, 24.06, -58.08)
CIE-LCH	lch(33.74, 62.87, 292.50°)
OKLab	oklab(43.74% -0.0203 -0.1679)
OKLCH	oklch(43.74% 0.169 263.1)
XYZ	xyz(10.3095, 7.8836, 40.5054)
Luminance	0.0789 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B48AD #AD801B

analogous

#1B91AD #1B48AD #371BAD

triadic

#1B48AD #AD1B48 #48AD1B

tetradic

#1B48AD #AD1B91 #AD801B #1BAD37

square

#1B48AD #AD1B91 #AD801B #1BAD37

split-complementary

#1B48AD #AD371B #91AD1B

monochromatic

#0A1C43 #133278 #1B48AD #2860DD #5D87E6

Accessibility & contrast

On white

8.15

#1B48AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#1B48AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B48AD

8.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B48AD	#FFFFFF	#000000	##FFFFFF
##1B48AD	1.00	8.15	2.58	8.15
#FFFFFF	8.15	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056B0

Deuteranopia (green-blind)

#0049AB

Tritanopia (blue-blind)

#006273

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1b48ad;
/* rgb */ color: rgb(27, 72, 173);
/* oklch */ color: oklch(43.7% 0.169 263.1);

Tailwind

colors: {
  custom: {
    50: '#737ac6',
    500: '#1b48ad',
    950: '#000000',
  },
}

SCSS

$custom: #1b48ad;
$custom-light: #737ac6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b48ad",
  "rgb": {
    "r": 27,
    "g": 72,
    "b": 173
  },
  "hsl": {
    "h": 221.507,
    "s": 73,
    "l": 39.216
  },
  "oklch": {
    "l": 0.43744,
    "c": 0.16915,
    "h": 263.1
  },
  "luminance": 0.07885
}

Semantic roles & 50–950 ramp

primary

#1B48AD

secondary

#CAA75A

accent

#B738F0

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #1B48AD

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

Preview Lab → · Contrast checker → · Palette generator →