#1B48A7#1B48A7

#1B48A7 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.2% C 0.161 H 262.6°. Best body text is #FFFFFF at 8.30:1 contrast (WCAG AA passes).

Color values

HEX	#1B48A7
RGB	rgb(27, 72, 167)
HSL	hsl(221, 72%, 38%)
HSV	hsv(221, 84%, 65%)
CMYK	cmyk(83.8%, 56.9%, 0%, 34.5%)
CIE-LAB	lab(33.26, 21.68, -55.28)
CIE-LCH	lch(33.26, 59.38, 291.41°)
OKLab	oklab(43.23% -0.0207 -0.1597)
OKLCH	oklch(43.23% 0.161 262.6)
XYZ	xyz(9.7419, 7.6566, 37.5161)
Luminance	0.0766 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B48A7 #A77A1B

analogous

#1B8EA7 #1B48A7 #341BA7

triadic

#1B48A7 #A71B48 #48A71B

tetradic

#1B48A7 #A71B8E #A77A1B #1BA734

square

#1B48A7 #A71B8E #A77A1B #1BA734

split-complementary

#1B48A7 #A7341B #8EA71B

monochromatic

#0A1B3E #123172 #1B48A7 #245FDC #5885E4

Accessibility & contrast

On white

8.30

#1B48A7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#1B48A7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B48A7

8.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B48A7	#FFFFFF	#000000	##FFFFFF
##1B48A7	1.00	8.30	2.53	8.30
#FFFFFF	8.30	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055AA

Deuteranopia (green-blind)

#0048A5

Tritanopia (blue-blind)

#006070

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1b48a7;
/* rgb */ color: rgb(27, 72, 167);
/* oklch */ color: oklch(43.2% 0.161 262.6);

Tailwind

colors: {
  custom: {
    50: '#717ac2',
    500: '#1b48a7',
    950: '#000000',
  },
}

SCSS

$custom: #1b48a7;
$custom-light: #717ac2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b48a7",
  "rgb": {
    "r": 27,
    "g": 72,
    "b": 167
  },
  "hsl": {
    "h": 220.714,
    "s": 72.165,
    "l": 38.039
  },
  "oklch": {
    "l": 0.4323,
    "c": 0.16104,
    "h": 262.6
  },
  "luminance": 0.07658
}

Semantic roles & 50–950 ramp

primary

#1B48A7

secondary

#C8A356

accent

#B439EF

background

#F7F7FC

surface

#EDEDF8

border

#C8C8D1

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1B48A7

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

Preview Lab → · Contrast checker → · Palette generator →