#1B4CA6#1B4CA6

#1B4CA6 is a dark, vivid blue. Relative luminance 0.082; OKLCH L 44.0% C 0.155 H 261.3°. Best body text is #FFFFFF at 7.98:1 contrast (WCAG AA passes).

Color values

HEX	#1B4CA6
RGB	rgb(27, 76, 166)
HSL	hsl(219, 72%, 38%)
HSV	hsv(219, 84%, 65%)
CMYK	cmyk(83.7%, 54.2%, 0%, 34.9%)
CIE-LAB	lab(34.30, 18.57, -52.99)
CIE-LCH	lch(34.30, 56.15, 289.31°)
OKLab	oklab(44% -0.0234 -0.1529)
OKLCH	oklch(44% 0.155 261.3)
XYZ	xyz(9.9169, 8.1538, 37.1202)
Luminance	0.0815 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4CA6 #A6751B

analogous

#1B91A6 #1B4CA6 #2F1BA6

triadic

#1B4CA6 #A61B4C #4CA61B

tetradic

#1B4CA6 #A61B91 #A6751B #1BA62F

square

#1B4CA6 #A61B91 #A6751B #1BA62F

split-complementary

#1B4CA6 #A62F1B #91A61B

monochromatic

#0A1C3D #123471 #1B4CA6 #2464DB #5889E4

Accessibility & contrast

On white

7.98

#1B4CA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#1B4CA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4CA6

7.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4CA6	#FFFFFF	#000000	##FFFFFF
##1B4CA6	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)

#0057A9

Deuteranopia (green-blind)

#004BA4

Tritanopia (blue-blind)

#006271

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1b4ca6;
/* rgb */ color: rgb(27, 76, 166);
/* oklch */ color: oklch(44.0% 0.155 261.3);

Tailwind

colors: {
  custom: {
    50: '#717dc1',
    500: '#1b4ca6',
    950: '#000000',
  },
}

SCSS

$custom: #1b4ca6;
$custom-light: #717dc1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4ca6",
  "rgb": {
    "r": 27,
    "g": 76,
    "b": 166
  },
  "hsl": {
    "h": 218.849,
    "s": 72.021,
    "l": 37.843
  },
  "oklch": {
    "l": 0.43997,
    "c": 0.15467,
    "h": 261.3
  },
  "luminance": 0.08155
}

Semantic roles & 50–950 ramp

primary

#1B4CA6

secondary

#C79F56

accent

#AF39EF

background

#F7F7FC

surface

#EDEEF8

border

#C8C9D1

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1B4CA6

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

Preview Lab → · Contrast checker → · Palette generator →