#1B48B4#1B48B4

#1B48B4 is a dark, vivid blue. Relative luminance 0.082; OKLCH L 44.4% C 0.178 H 263.6°. Best body text is #FFFFFF at 7.98:1 contrast (WCAG AA passes).

Color values

HEX	#1B48B4
RGB	rgb(27, 72, 180)
HSL	hsl(222, 74%, 41%)
HSV	hsv(222, 85%, 71%)
CMYK	cmyk(85%, 60%, 0%, 29.4%)
CIE-LAB	lab(34.32, 26.81, -61.30)
CIE-LCH	lch(34.32, 66.90, 293.62°)
OKLab	oklab(44.36% -0.02 -0.1774)
OKLCH	oklch(44.36% 0.178 263.6)
XYZ	xyz(11.0046, 8.1617, 44.1665)
Luminance	0.0816 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B48B4 #B4871B

analogous

#1B94B4 #1B48B4 #3A1BB4

triadic

#1B48B4 #B41B48 #48B41B

tetradic

#1B48B4 #B41B94 #B4871B #1BB43A

square

#1B48B4 #B41B94 #B4871B #1BB43A

split-complementary

#1B48B4 #B43A1B #94B41B

monochromatic

#0B1D4A #13337F #1B48B4 #2D61DF #6289E7

Accessibility & contrast

On white

7.98

#1B48B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#1B48B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B48B4

7.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B48B4	#FFFFFF	#000000	##FFFFFF
##1B48B4	1.00	7.98	2.63	7.98
#FFFFFF	7.98	1.00	21.00	1.00
#000000	2.63	21.00	1.00	21.00
##FFFFFF	7.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058B8

Deuteranopia (green-blind)

#004AB2

Tritanopia (blue-blind)

#006477

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1b48b4;
/* rgb */ color: rgb(27, 72, 180);
/* oklch */ color: oklch(44.4% 0.178 263.6);

Tailwind

colors: {
  custom: {
    50: '#757acb',
    500: '#1b48b4',
    950: '#000000',
  },
}

SCSS

$custom: #1b48b4;
$custom-light: #757acb;
$custom-dark: #000000;

JSON

{
  "hex": "#1b48b4",
  "rgb": {
    "r": 27,
    "g": 72,
    "b": 180
  },
  "hsl": {
    "h": 222.353,
    "s": 73.913,
    "l": 40.588
  },
  "oklch": {
    "l": 0.44358,
    "c": 0.17848,
    "h": 263.6
  },
  "luminance": 0.08163
}

Semantic roles & 50–950 ramp

primary

#1B48B4

secondary

#CCAC5F

accent

#BA37F1

background

#F7F7FC

surface

#EEEDF9

border

#C9C8D2

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #1B48B4

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

Preview Lab → · Contrast checker → · Palette generator →