#1B4B96#1B4B96

#1B4B96 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 42.5% C 0.134 H 259.3°. Best body text is #FFFFFF at 8.42:1 contrast (WCAG AA passes).

Color values

HEX	#1B4B96
RGB	rgb(27, 75, 150)
HSL	hsl(217, 69%, 35%)
HSV	hsv(217, 82%, 59%)
CMYK	cmyk(82%, 50%, 0%, 41.2%)
CIE-LAB	lab(32.85, 12.80, -45.70)
CIE-LCH	lch(32.85, 47.46, 285.65°)
OKLab	oklab(42.52% -0.0248 -0.1315)
OKLCH	oklch(42.52% 0.134 259.3)
XYZ	xyz(8.4711, 7.4662, 29.8429)
Luminance	0.0747 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4B96 #96661B

analogous

#1B8996 #1B4B96 #281B96

triadic

#1B4B96 #961B4B #4B961B

tetradic

#1B4B96 #961B89 #96661B #1B9628

square

#1B4B96 #961B89 #96661B #1B9628

split-complementary

#1B4B96 #96281B #89961B

monochromatic

#08172E #123162 #1B4B96 #2465CA #4D86DF

Accessibility & contrast

On white

8.42

#1B4B96 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#1B4B96 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4B96

8.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4B96	#FFFFFF	#000000	##FFFFFF
##1B4B96	1.00	8.42	2.49	8.42
#FFFFFF	8.42	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E5399

Deuteranopia (green-blind)

#004895

Tritanopia (blue-blind)

#005D69

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1b4b96;
/* rgb */ color: rgb(27, 75, 150);
/* oklch */ color: oklch(42.5% 0.134 259.3);

Tailwind

colors: {
  custom: {
    50: '#6d7cb5',
    500: '#1b4b96',
    950: '#000000',
  },
}

SCSS

$custom: #1b4b96;
$custom-light: #6d7cb5;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4b96",
  "rgb": {
    "r": 27,
    "g": 75,
    "b": 150
  },
  "hsl": {
    "h": 216.585,
    "s": 69.492,
    "l": 34.706
  },
  "oklch": {
    "l": 0.42515,
    "c": 0.13377,
    "h": 259.3
  },
  "luminance": 0.07467
}

Semantic roles & 50–950 ramp

primary

#1B4B96

secondary

#C1934C

accent

#A73BEC

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1B4B96

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

Preview Lab → · Contrast checker → · Palette generator →