#1B4AA6#1B4AA6

#1B4AA6 is a dark, vivid blue. Relative luminance 0.079; OKLCH L 43.6% C 0.157 H 261.9°. Best body text is #FFFFFF at 8.15:1 contrast (WCAG AA passes).

Color values

HEX	#1B4AA6
RGB	rgb(27, 74, 166)
HSL	hsl(220, 72%, 38%)
HSV	hsv(220, 84%, 65%)
CMYK	cmyk(83.7%, 55.4%, 0%, 34.9%)
CIE-LAB	lab(33.74, 19.92, -53.91)
CIE-LCH	lch(33.74, 57.47, 290.29°)
OKLab	oklab(43.57% -0.0221 -0.1556)
OKLCH	oklch(43.57% 0.157 261.9)
XYZ	xyz(9.7812, 7.8825, 37.0750)
Luminance	0.0788 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4AA6 #A6771B

analogous

#1B90A6 #1B4AA6 #311BA6

triadic

#1B4AA6 #A61B4A #4AA61B

tetradic

#1B4AA6 #A61B90 #A6771B #1BA631

square

#1B4AA6 #A61B90 #A6771B #1BA631

split-complementary

#1B4AA6 #A6311B #90A61B

monochromatic

#0A1B3D #123371 #1B4AA6 #2461DB #5887E4

Accessibility & contrast

On white

8.15

#1B4AA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#1B4AA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4AA6

8.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4AA6	#FFFFFF	#000000	##FFFFFF
##1B4AA6	1.00	8.15	2.58	8.15
#FFFFFF	8.15	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056A9

Deuteranopia (green-blind)

#0049A4

Tritanopia (blue-blind)

#006170

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1b4aa6;
/* rgb */ color: rgb(27, 74, 166);
/* oklch */ color: oklch(43.6% 0.157 261.9);

Tailwind

colors: {
  custom: {
    50: '#717bc1',
    500: '#1b4aa6',
    950: '#000000',
  },
}

SCSS

$custom: #1b4aa6;
$custom-light: #717bc1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4aa6",
  "rgb": {
    "r": 27,
    "g": 74,
    "b": 166
  },
  "hsl": {
    "h": 219.712,
    "s": 72.021,
    "l": 37.843
  },
  "oklch": {
    "l": 0.43569,
    "c": 0.15718,
    "h": 261.9
  },
  "luminance": 0.07884
}

Semantic roles & 50–950 ramp

primary

#1B4AA6

secondary

#C7A156

accent

#B139EF

background

#F7F7FC

surface

#EDEDF8

border

#C8C8D1

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1B4AA6

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

Preview Lab → · Contrast checker → · Palette generator →