#1B41A8#1B41A8

#1B41A8 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 41.9% C 0.171 H 264.5°. Best body text is #FFFFFF at 8.87:1 contrast (WCAG AA passes).

Color values

HEX	#1B41A8
RGB	rgb(27, 65, 168)
HSL	hsl(224, 72%, 38%)
HSV	hsv(224, 84%, 66%)
CMYK	cmyk(83.9%, 61.3%, 0%, 34.1%)
CIE-LAB	lab(31.44, 26.81, -58.85)
CIE-LCH	lch(31.44, 64.67, 294.49°)
OKLab	oklab(41.89% -0.0164 -0.1703)
OKLCH	oklch(41.89% 0.171 264.5)
XYZ	xyz(9.4077, 6.8396, 37.8625)
Luminance	0.0684 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B41A8 #A8821B

analogous

#1B87A8 #1B41A8 #3B1BA8

triadic

#1B41A8 #A81B41 #41A81B

tetradic

#1B41A8 #A81B87 #A8821B #1BA83B

square

#1B41A8 #A81B87 #A8821B #1BA83B

split-complementary

#1B41A8 #A83B1B #87A81B

monochromatic

#0A183F #132D73 #1B41A8 #2456DC #597FE4

Accessibility & contrast

On white

8.87

#1B41A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#1B41A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B41A8

8.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B41A8	#FFFFFF	#000000	##FFFFFF
##1B41A8	1.00	8.87	2.37	8.87
#FFFFFF	8.87	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051AB

Deuteranopia (green-blind)

#0044A6

Tritanopia (blue-blind)

#005C6E

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1b41a8;
/* rgb */ color: rgb(27, 65, 168);
/* oklch */ color: oklch(41.9% 0.171 264.5);

Tailwind

colors: {
  custom: {
    50: '#7275c3',
    500: '#1b41a8',
    950: '#000000',
  },
}

SCSS

$custom: #1b41a8;
$custom-light: #7275c3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b41a8",
  "rgb": {
    "r": 27,
    "g": 65,
    "b": 168
  },
  "hsl": {
    "h": 223.83,
    "s": 72.308,
    "l": 38.235
  },
  "oklch": {
    "l": 0.41892,
    "c": 0.17108,
    "h": 264.5
  },
  "luminance": 0.06841
}

Semantic roles & 50–950 ramp

primary

#1B41A8

secondary

#C8A957

accent

#BE39EF

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#090813

muted

#7B7B82

Preview Lab

Preview with #1B41A8

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

Preview Lab → · Contrast checker → · Palette generator →