#1B4B97#1B4B97

#1B4B97 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 42.6% C 0.135 H 259.5°. Best body text is #FFFFFF at 8.40:1 contrast (WCAG AA passes).

Color values

HEX	#1B4B97
RGB	rgb(27, 75, 151)
HSL	hsl(217, 70%, 35%)
HSV	hsv(217, 82%, 59%)
CMYK	cmyk(82.1%, 50.3%, 0%, 40.8%)
CIE-LAB	lab(32.92, 13.21, -46.19)
CIE-LCH	lch(32.92, 48.04, 285.95°)
OKLab	oklab(42.59% -0.0246 -0.1329)
OKLCH	oklch(42.59% 0.135 259.5)
XYZ	xyz(8.5519, 7.4985, 30.2688)
Luminance	0.0750 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4B97 #97671B

analogous

#1B8997 #1B4B97 #291B97

triadic

#1B4B97 #971B4B #4B971B

tetradic

#1B4B97 #971B89 #97671B #1B9729

square

#1B4B97 #971B89 #97671B #1B9729

split-complementary

#1B4B97 #97291B #89971B

monochromatic

#08172F #123163 #1B4B97 #2465CB #4D86DF

Accessibility & contrast

On white

8.40

#1B4B97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#1B4B97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4B97

8.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4B97	#FFFFFF	#000000	##FFFFFF
##1B4B97	1.00	8.40	2.50	8.40
#FFFFFF	8.40	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D539A

Deuteranopia (green-blind)

#004895

Tritanopia (blue-blind)

#005D6A

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1b4b97;
/* rgb */ color: rgb(27, 75, 151);
/* oklch */ color: oklch(42.6% 0.135 259.5);

Tailwind

colors: {
  custom: {
    50: '#6d7cb6',
    500: '#1b4b97',
    950: '#000000',
  },
}

SCSS

$custom: #1b4b97;
$custom-light: #6d7cb6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4b97",
  "rgb": {
    "r": 27,
    "g": 75,
    "b": 151
  },
  "hsl": {
    "h": 216.774,
    "s": 69.663,
    "l": 34.902
  },
  "oklch": {
    "l": 0.42591,
    "c": 0.13517,
    "h": 259.5
  },
  "luminance": 0.075
}

Semantic roles & 50–950 ramp

primary

#1B4B97

secondary

#C1944C

accent

#A83BEC

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1B4B97

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

Preview Lab → · Contrast checker → · Palette generator →