#1B4997#1B4997

#1B4997 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.1% C 0.138 H 260.4°. Best body text is #FFFFFF at 8.58:1 contrast (WCAG AA passes).

Color values

HEX	#1B4997
RGB	rgb(27, 73, 151)
HSL	hsl(218, 70%, 35%)
HSV	hsv(218, 82%, 59%)
CMYK	cmyk(82.1%, 51.7%, 0%, 40.8%)
CIE-LAB	lab(32.33, 14.57, -47.14)
CIE-LCH	lch(32.33, 49.34, 287.17°)
OKLab	oklab(42.14% -0.0231 -0.1357)
OKLCH	oklch(42.14% 0.138 260.4)
XYZ	xyz(8.4184, 7.2315, 30.2243)
Luminance	0.0723 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4997 #97691B

analogous

#1B8797 #1B4997 #2B1B97

triadic

#1B4997 #971B49 #49971B

tetradic

#1B4997 #971B87 #97691B #1B972B

square

#1B4997 #971B87 #97691B #1B972B

split-complementary

#1B4997 #972B1B #87971B

monochromatic

#08172F #123063 #1B4997 #2462CB #4D83DF

Accessibility & contrast

On white

8.58

#1B4997 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#1B4997 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4997

8.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4997	#FFFFFF	#000000	##FFFFFF
##1B4997	1.00	8.58	2.45	8.58
#FFFFFF	8.58	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17529A

Deuteranopia (green-blind)

#004795

Tritanopia (blue-blind)

#005C69

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1b4997;
/* rgb */ color: rgb(27, 73, 151);
/* oklch */ color: oklch(42.1% 0.138 260.4);

Tailwind

colors: {
  custom: {
    50: '#6d7bb6',
    500: '#1b4997',
    950: '#000000',
  },
}

SCSS

$custom: #1b4997;
$custom-light: #6d7bb6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4997",
  "rgb": {
    "r": 27,
    "g": 73,
    "b": 151
  },
  "hsl": {
    "h": 217.742,
    "s": 69.663,
    "l": 34.902
  },
  "oklch": {
    "l": 0.42141,
    "c": 0.13769,
    "h": 260.4
  },
  "luminance": 0.07232
}

Semantic roles & 50–950 ramp

primary

#1B4997

secondary

#C1964C

accent

#AB3BEC

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1B4997

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

Preview Lab → · Contrast checker → · Palette generator →