#1B3696#1B3696

#1B3696 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 38.1% C 0.160 H 266.3°. Best body text is #FFFFFF at 10.42:1 contrast (WCAG AA passes).

Color values

HEX	#1B3696
RGB	rgb(27, 54, 150)
HSL	hsl(227, 69%, 35%)
HSV	hsv(227, 82%, 59%)
CMYK	cmyk(82%, 64%, 0%, 41.2%)
CIE-LAB	lab(26.94, 27.20, -55.30)
CIE-LCH	lch(26.94, 61.62, 296.19°)
OKLab	oklab(38.06% -0.0103 -0.16)
OKLCH	oklch(38.06% 0.16 266.3)
XYZ	xyz(7.2742, 5.0725, 29.4440)
Luminance	0.0507 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3696 #967B1B

analogous

#1B7496 #1B3696 #3D1B96

triadic

#1B3696 #961B36 #36961B

tetradic

#1B3696 #961B74 #967B1B #1B963D

square

#1B3696 #961B74 #967B1B #1B963D

split-complementary

#1B3696 #963D1B #74961B

monochromatic

#08112E #122362 #1B3696 #2449CA #4D6DDF

Accessibility & contrast

On white

10.42

#1B3696 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#1B3696 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3696

10.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3696	#FFFFFF	#000000	##FFFFFF
##1B3696	1.00	10.42	2.01	10.42
#FFFFFF	10.42	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004699

Deuteranopia (green-blind)

#003A94

Tritanopia (blue-blind)

#004F60

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1b3696;
/* rgb */ color: rgb(27, 54, 150);
/* oklch */ color: oklch(38.1% 0.160 266.3);

Tailwind

colors: {
  custom: {
    50: '#6e6cb6',
    500: '#1b3696',
    950: '#000000',
  },
}

SCSS

$custom: #1b3696;
$custom-light: #6e6cb6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3696",
  "rgb": {
    "r": 27,
    "g": 54,
    "b": 150
  },
  "hsl": {
    "h": 226.829,
    "s": 69.492,
    "l": 34.706
  },
  "oklch": {
    "l": 0.38059,
    "c": 0.16036,
    "h": 266.3
  },
  "luminance": 0.05073
}

Semantic roles & 50–950 ramp

primary

#1B3696

secondary

#C1A74C

accent

#C53BEC

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #1B3696

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

Preview Lab → · Contrast checker → · Palette generator →