#1B4C97#1B4C97

#1B4C97 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 42.8% C 0.134 H 259.1°. Best body text is #FFFFFF at 8.31:1 contrast (WCAG AA passes).

Color values

HEX	#1B4C97
RGB	rgb(27, 76, 151)
HSL	hsl(216, 70%, 35%)
HSV	hsv(216, 82%, 59%)
CMYK	cmyk(82.1%, 49.7%, 0%, 40.8%)
CIE-LAB	lab(33.21, 12.53, -45.72)
CIE-LCH	lch(33.21, 47.40, 285.33°)
OKLab	oklab(42.82% -0.0254 -0.1315)
OKLCH	oklch(42.82% 0.134 259.1)
XYZ	xyz(8.6203, 7.6352, 30.2916)
Luminance	0.0764 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4C97 #97661B

analogous

#1B8A97 #1B4C97 #281B97

triadic

#1B4C97 #971B4C #4C971B

tetradic

#1B4C97 #971B8A #97661B #1B9728

square

#1B4C97 #971B8A #97661B #1B9728

split-complementary

#1B4C97 #97281B #8A971B

monochromatic

#08182F #123263 #1B4C97 #2466CB #4D87DF

Accessibility & contrast

On white

8.31

#1B4C97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#1B4C97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4C97

8.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4C97	#FFFFFF	#000000	##FFFFFF
##1B4C97	1.00	8.31	2.53	8.31
#FFFFFF	8.31	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#20549A

Deuteranopia (green-blind)

#004996

Tritanopia (blue-blind)

#005E6A

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1b4c97;
/* rgb */ color: rgb(27, 76, 151);
/* oklch */ color: oklch(42.8% 0.134 259.1);

Tailwind

colors: {
  custom: {
    50: '#6d7db6',
    500: '#1b4c97',
    950: '#000000',
  },
}

SCSS

$custom: #1b4c97;
$custom-light: #6d7db6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4c97",
  "rgb": {
    "r": 27,
    "g": 76,
    "b": 151
  },
  "hsl": {
    "h": 216.29,
    "s": 69.663,
    "l": 34.902
  },
  "oklch": {
    "l": 0.42818,
    "c": 0.13392,
    "h": 259.1
  },
  "luminance": 0.07636
}

Semantic roles & 50–950 ramp

primary

#1B4C97

secondary

#C1934C

accent

#A63BEC

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1B4C97

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

Preview Lab → · Contrast checker → · Palette generator →