#1E3789#1E3789

#1E3789 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.2% C 0.140 H 266.5°. Best body text is #FFFFFF at 10.70:1 contrast (WCAG AA passes).

Color values

HEX	#1E3789
RGB	rgb(30, 55, 137)
HSL	hsl(226, 64%, 33%)
HSV	hsv(226, 78%, 54%)
CMYK	cmyk(78.1%, 59.9%, 0%, 46.3%)
CIE-LAB	lab(26.20, 21.69, -48.48)
CIE-LCH	lch(26.20, 53.11, 294.11°)
OKLab	oklab(37.19% -0.0086 -0.14)
OKLCH	oklch(37.19% 0.14 266.5)
XYZ	xyz(6.4154, 4.8138, 24.2531)
Luminance	0.0481 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1E3789 #89701E

analogous

#1E6D89 #1E3789 #3A1E89

triadic

#1E3789 #891E37 #37891E

tetradic

#1E3789 #891E6D #89701E #1E893A

square

#1E3789 #891E6D #89701E #1E893A

split-complementary

#1E3789 #893A1E #6D891E

monochromatic

#080F25 #132357 #1E3789 #294BBB #4A6BD7

Accessibility & contrast

On white

10.70

#1E3789 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#1E3789 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1E3789

10.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1E3789	#FFFFFF	#000000	##FFFFFF
##1E3789	1.00	10.70	1.96	10.70
#FFFFFF	10.70	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00438C

Deuteranopia (green-blind)

#003987

Tritanopia (blue-blind)

#004C5A

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1e3789;
/* rgb */ color: rgb(30, 55, 137);
/* oklch */ color: oklch(37.2% 0.140 266.5);

Tailwind

colors: {
  custom: {
    50: '#6b6dac',
    500: '#1e3789',
    950: '#000000',
  },
}

SCSS

$custom: #1e3789;
$custom-light: #6b6dac;
$custom-dark: #000000;

JSON

{
  "hex": "#1e3789",
  "rgb": {
    "r": 30,
    "g": 55,
    "b": 137
  },
  "hsl": {
    "h": 225.981,
    "s": 64.072,
    "l": 32.745
  },
  "oklch": {
    "l": 0.37188,
    "c": 0.14024,
    "h": 266.5
  },
  "luminance": 0.04815
}

Semantic roles & 50–950 ramp

primary

#1E3789

secondary

#BA9F49

accent

#C041E7

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #1E3789

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

Preview Lab → · Contrast checker → · Palette generator →