#1B3992#1B3992

#1B3992 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.3% C 0.151 H 265.4°. Best body text is #FFFFFF at 10.26:1 contrast (WCAG AA passes).

Color values

HEX	#1B3992
RGB	rgb(27, 57, 146)
HSL	hsl(225, 69%, 34%)
HSV	hsv(225, 82%, 57%)
CMYK	cmyk(81.5%, 61%, 0%, 42.7%)
CIE-LAB	lab(27.39, 23.56, -52.11)
CIE-LCH	lch(27.39, 57.19, 294.33°)
OKLab	oklab(38.28% -0.0121 -0.1506)
OKLCH	oklch(38.28% 0.151 265.4)
XYZ	xyz(7.1016, 5.2338, 27.8245)
Luminance	0.0524 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3992 #92741B

analogous

#1B7592 #1B3992 #391B92

triadic

#1B3992 #921B39 #39921B

tetradic

#1B3992 #921B75 #92741B #1B9239

square

#1B3992 #921B75 #92741B #1B9239

split-complementary

#1B3992 #92391B #75921B

monochromatic

#08112B #11255E #1B3992 #254DC6 #4A6FDE

Accessibility & contrast

On white

10.26

#1B3992 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#1B3992 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3992

10.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3992	#FFFFFF	#000000	##FFFFFF
##1B3992	1.00	10.26	2.05	10.26
#FFFFFF	10.26	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004695

Deuteranopia (green-blind)

#003B90

Tritanopia (blue-blind)

#00505F

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1b3992;
/* rgb */ color: rgb(27, 57, 146);
/* oklch */ color: oklch(38.3% 0.151 265.4);

Tailwind

colors: {
  custom: {
    50: '#6d6fb3',
    500: '#1b3992',
    950: '#000000',
  },
}

SCSS

$custom: #1b3992;
$custom-light: #6d6fb3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3992",
  "rgb": {
    "r": 27,
    "g": 57,
    "b": 146
  },
  "hsl": {
    "h": 224.874,
    "s": 68.786,
    "l": 33.922
  },
  "oklch": {
    "l": 0.38284,
    "c": 0.15113,
    "h": 265.4
  },
  "luminance": 0.05235
}

Semantic roles & 50–950 ramp

primary

#1B3992

secondary

#BFA249

accent

#BF3CEC

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #1B3992

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

Preview Lab → · Contrast checker → · Palette generator →