#1B4699#1B4699

#1B4699 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 41.6% C 0.144 H 261.8°. Best body text is #FFFFFF at 8.81:1 contrast (WCAG AA passes).

Color values

HEX	#1B4699
RGB	rgb(27, 70, 153)
HSL	hsl(220, 70%, 35%)
HSV	hsv(220, 82%, 60%)
CMYK	cmyk(82.4%, 54.2%, 0%, 40%)
CIE-LAB	lab(31.61, 17.43, -49.52)
CIE-LCH	lch(31.61, 52.50, 289.39°)
OKLab	oklab(41.64% -0.0206 -0.1428)
OKLCH	oklch(41.64% 0.144 261.8)
XYZ	xyz(8.3898, 6.9122, 31.0228)
Luminance	0.0691 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4699 #996E1B

analogous

#1B8599 #1B4699 #2F1B99

triadic

#1B4699 #991B46 #46991B

tetradic

#1B4699 #991B85 #996E1B #1B992F

square

#1B4699 #991B85 #996E1B #1B992F

split-complementary

#1B4699 #992F1B #85991B

monochromatic

#091631 #122E65 #1B4699 #245ECD #4F80E0

Accessibility & contrast

On white

8.81

#1B4699 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#1B4699 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4699

8.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4699	#FFFFFF	#000000	##FFFFFF
##1B4699	1.00	8.81	2.38	8.81
#FFFFFF	8.81	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#03509C

Deuteranopia (green-blind)

#004597

Tritanopia (blue-blind)

#005A68

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1b4699;
/* rgb */ color: rgb(27, 70, 153);
/* oklch */ color: oklch(41.6% 0.144 261.8);

Tailwind

colors: {
  custom: {
    50: '#6e78b8',
    500: '#1b4699',
    950: '#000000',
  },
}

SCSS

$custom: #1b4699;
$custom-light: #6e78b8;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4699",
  "rgb": {
    "r": 27,
    "g": 70,
    "b": 153
  },
  "hsl": {
    "h": 219.524,
    "s": 70,
    "l": 35.294
  },
  "oklch": {
    "l": 0.41638,
    "c": 0.1443,
    "h": 261.8
  },
  "luminance": 0.06913
}

Semantic roles & 50–950 ramp

primary

#1B4699

secondary

#C29A4E

accent

#B03BED

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1B4699

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

Preview Lab → · Contrast checker → · Palette generator →