#1B4897#1B4897

#1B4897 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 41.9% C 0.139 H 260.8°. Best body text is #FFFFFF at 8.68:1 contrast (WCAG AA passes).

Color values

HEX	#1B4897
RGB	rgb(27, 72, 151)
HSL	hsl(218, 70%, 35%)
HSV	hsv(218, 82%, 59%)
CMYK	cmyk(82.1%, 52.3%, 0%, 40.8%)
CIE-LAB	lab(32.04, 15.25, -47.61)
CIE-LCH	lch(32.04, 50.00, 287.76°)
OKLab	oklab(41.92% -0.0223 -0.1372)
OKLCH	oklch(41.92% 0.139 260.8)
XYZ	xyz(8.3532, 7.1011, 30.2026)
Luminance	0.0710 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4897 #976A1B

analogous

#1B8697 #1B4897 #2C1B97

triadic

#1B4897 #971B48 #48971B

tetradic

#1B4897 #971B86 #976A1B #1B972C

square

#1B4897 #971B86 #976A1B #1B972C

split-complementary

#1B4897 #972C1B #86971B

monochromatic

#08162F #122F63 #1B4897 #2461CB #4D82DF

Accessibility & contrast

On white

8.68

#1B4897 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#1B4897 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4897

8.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4897	#FFFFFF	#000000	##FFFFFF
##1B4897	1.00	8.68	2.42	8.68
#FFFFFF	8.68	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#13519A

Deuteranopia (green-blind)

#004695

Tritanopia (blue-blind)

#005B68

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1b4897;
/* rgb */ color: rgb(27, 72, 151);
/* oklch */ color: oklch(41.9% 0.139 260.8);

Tailwind

colors: {
  custom: {
    50: '#6d7ab6',
    500: '#1b4897',
    950: '#000000',
  },
}

SCSS

$custom: #1b4897;
$custom-light: #6d7ab6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4897",
  "rgb": {
    "r": 27,
    "g": 72,
    "b": 151
  },
  "hsl": {
    "h": 218.226,
    "s": 69.663,
    "l": 34.902
  },
  "oklch": {
    "l": 0.41918,
    "c": 0.13896,
    "h": 260.8
  },
  "luminance": 0.07102
}

Semantic roles & 50–950 ramp

primary

#1B4897

secondary

#C1974C

accent

#AC3BEC

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1B4897

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

Preview Lab → · Contrast checker → · Palette generator →