#1B4CA7#1B4CA7

#1B4CA7 is a dark, vivid blue. Relative luminance 0.082; OKLCH L 44.1% C 0.156 H 261.4°. Best body text is #FFFFFF at 7.96:1 contrast (WCAG AA passes).

Color values

HEX	#1B4CA7
RGB	rgb(27, 76, 167)
HSL	hsl(219, 72%, 38%)
HSV	hsv(219, 84%, 65%)
CMYK	cmyk(83.8%, 54.5%, 0%, 34.5%)
CIE-LAB	lab(34.38, 18.97, -53.47)
CIE-LCH	lch(34.38, 56.73, 289.54°)
OKLab	oklab(44.08% -0.0233 -0.1543)
OKLCH	oklch(44.08% 0.156 261.4)
XYZ	xyz(10.0090, 8.1907, 37.6052)
Luminance	0.0819 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4CA7 #A7761B

analogous

#1B92A7 #1B4CA7 #301BA7

triadic

#1B4CA7 #A71B4C #4CA71B

tetradic

#1B4CA7 #A71B92 #A7761B #1BA730

square

#1B4CA7 #A71B92 #A7761B #1BA730

split-complementary

#1B4CA7 #A7301B #92A71B

monochromatic

#0A1C3E #123472 #1B4CA7 #2464DC #5889E4

Accessibility & contrast

On white

7.96

#1B4CA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#1B4CA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4CA7

7.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4CA7	#FFFFFF	#000000	##FFFFFF
##1B4CA7	1.00	7.96	2.64	7.96
#FFFFFF	7.96	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057AA

Deuteranopia (green-blind)

#004BA5

Tritanopia (blue-blind)

#006272

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1b4ca7;
/* rgb */ color: rgb(27, 76, 167);
/* oklch */ color: oklch(44.1% 0.156 261.4);

Tailwind

colors: {
  custom: {
    50: '#717dc2',
    500: '#1b4ca7',
    950: '#000000',
  },
}

SCSS

$custom: #1b4ca7;
$custom-light: #717dc2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4ca7",
  "rgb": {
    "r": 27,
    "g": 76,
    "b": 167
  },
  "hsl": {
    "h": 219,
    "s": 72.165,
    "l": 38.039
  },
  "oklch": {
    "l": 0.44078,
    "c": 0.15604,
    "h": 261.4
  },
  "luminance": 0.08192
}

Semantic roles & 50–950 ramp

primary

#1B4CA7

secondary

#C8A056

accent

#AF39EF

background

#F7F7FC

surface

#EDEEF8

border

#C8C9D1

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1B4CA7

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

Preview Lab → · Contrast checker → · Palette generator →