#1B4BA8#1B4BA8

#1B4BA8 is a dark, vivid blue. Relative luminance 0.081; OKLCH L 43.9% C 0.159 H 261.8°. Best body text is #FFFFFF at 8.02:1 contrast (WCAG AA passes).

Color values

HEX	#1B4BA8
RGB	rgb(27, 75, 168)
HSL	hsl(220, 72%, 38%)
HSV	hsv(220, 84%, 66%)
CMYK	cmyk(83.9%, 55.4%, 0%, 34.1%)
CIE-LAB	lab(34.17, 20.05, -54.40)
CIE-LCH	lch(34.17, 57.97, 290.23°)
OKLab	oklab(43.95% -0.0226 -0.157)
OKLCH	oklch(43.95% 0.159 261.8)
XYZ	xyz(10.0334, 8.0911, 38.0711)
Luminance	0.0809 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4BA8 #A8781B

analogous

#1B92A8 #1B4BA8 #311BA8

triadic

#1B4BA8 #A81B4B #4BA81B

tetradic

#1B4BA8 #A81B92 #A8781B #1BA831

square

#1B4BA8 #A81B92 #A8781B #1BA831

split-complementary

#1B4BA8 #A8311B #92A81B

monochromatic

#0A1C3F #133373 #1B4BA8 #2463DC #5988E4

Accessibility & contrast

On white

8.02

#1B4BA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#1B4BA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4BA8

8.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4BA8	#FFFFFF	#000000	##FFFFFF
##1B4BA8	1.00	8.02	2.62	8.02
#FFFFFF	8.02	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057AB

Deuteranopia (green-blind)

#004AA6

Tritanopia (blue-blind)

#006272

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1b4ba8;
/* rgb */ color: rgb(27, 75, 168);
/* oklch */ color: oklch(43.9% 0.159 261.8);

Tailwind

colors: {
  custom: {
    50: '#717cc3',
    500: '#1b4ba8',
    950: '#000000',
  },
}

SCSS

$custom: #1b4ba8;
$custom-light: #717cc3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4ba8",
  "rgb": {
    "r": 27,
    "g": 75,
    "b": 168
  },
  "hsl": {
    "h": 219.574,
    "s": 72.308,
    "l": 38.235
  },
  "oklch": {
    "l": 0.43947,
    "c": 0.15865,
    "h": 261.8
  },
  "luminance": 0.08092
}

Semantic roles & 50–950 ramp

primary

#1B4BA8

secondary

#C8A157

accent

#B139EF

background

#F7F7FC

surface

#EDEEF8

border

#C8C9D1

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1B4BA8

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

Preview Lab → · Contrast checker → · Palette generator →