#1B3996#1B3996

#1B3996 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.7% C 0.157 H 265.6°. Best body text is #FFFFFF at 10.13:1 contrast (WCAG AA passes).

Color values

HEX	#1B3996
RGB	rgb(27, 57, 150)
HSL	hsl(225, 69%, 35%)
HSV	hsv(225, 82%, 59%)
CMYK	cmyk(82%, 62%, 0%, 41.2%)
CIE-LAB	lab(27.74, 25.15, -53.99)
CIE-LCH	lch(27.74, 59.56, 294.98°)
OKLab	oklab(38.65% -0.0121 -0.1562)
OKLCH	oklch(38.65% 0.157 265.6)
XYZ	xyz(7.4182, 5.3604, 29.4919)
Luminance	0.0536 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3996 #96781B

analogous

#1B7796 #1B3996 #3B1B96

triadic

#1B3996 #961B39 #39961B

tetradic

#1B3996 #961B77 #96781B #1B963B

square

#1B3996 #961B77 #96781B #1B963B

split-complementary

#1B3996 #963B1B #77961B

monochromatic

#08122E #122562 #1B3996 #244DCA #4D70DF

Accessibility & contrast

On white

10.13

#1B3996 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#1B3996 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3996

10.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3996	#FFFFFF	#000000	##FFFFFF
##1B3996	1.00	10.13	2.07	10.13
#FFFFFF	10.13	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004799

Deuteranopia (green-blind)

#003C94

Tritanopia (blue-blind)

#005162

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1b3996;
/* rgb */ color: rgb(27, 57, 150);
/* oklch */ color: oklch(38.7% 0.157 265.6);

Tailwind

colors: {
  custom: {
    50: '#6e6fb6',
    500: '#1b3996',
    950: '#000000',
  },
}

SCSS

$custom: #1b3996;
$custom-light: #6e6fb6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3996",
  "rgb": {
    "r": 27,
    "g": 57,
    "b": 150
  },
  "hsl": {
    "h": 225.366,
    "s": 69.492,
    "l": 34.706
  },
  "oklch": {
    "l": 0.38651,
    "c": 0.15664,
    "h": 265.6
  },
  "luminance": 0.05361
}

Semantic roles & 50–950 ramp

primary

#1B3996

secondary

#C1A44C

accent

#C13BEC

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #1B3996

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

Preview Lab → · Contrast checker → · Palette generator →