#1E3688#1E3688

#1E3688 is a dark, vivid blue. Relative luminance 0.047; OKLCH L 36.9% C 0.140 H 266.8°. Best body text is #FFFFFF at 10.83:1 contrast (WCAG AA passes).

Color values

HEX	#1E3688
RGB	rgb(30, 54, 136)
HSL	hsl(226, 64%, 33%)
HSV	hsv(226, 78%, 53%)
CMYK	cmyk(77.9%, 60.3%, 0%, 46.7%)
CIE-LAB	lab(25.84, 21.99, -48.45)
CIE-LCH	lch(25.84, 53.21, 294.41°)
OKLab	oklab(36.89% -0.0079 -0.1399)
OKLCH	oklch(36.89% 0.14 266.8)
XYZ	xyz(6.2970, 4.6912, 23.8614)
Luminance	0.0469 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1E3688 #88701E

analogous

#1E6B88 #1E3688 #3B1E88

triadic

#1E3688 #881E36 #36881E

tetradic

#1E3688 #881E6B #88701E #1E883B

square

#1E3688 #881E6B #88701E #1E883B

split-complementary

#1E3688 #883B1E #6B881E

monochromatic

#080E24 #132256 #1E3688 #294ABA #4969D7

Accessibility & contrast

On white

10.83

#1E3688 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#1E3688 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1E3688

10.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1E3688	#FFFFFF	#000000	##FFFFFF
##1E3688	1.00	10.83	1.94	10.83
#FFFFFF	10.83	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00428B

Deuteranopia (green-blind)

#003886

Tritanopia (blue-blind)

#004B59

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1e3688;
/* rgb */ color: rgb(30, 54, 136);
/* oklch */ color: oklch(36.9% 0.140 266.8);

Tailwind

colors: {
  custom: {
    50: '#6b6cab',
    500: '#1e3688',
    950: '#000000',
  },
}

SCSS

$custom: #1e3688;
$custom-light: #6b6cab;
$custom-dark: #000000;

JSON

{
  "hex": "#1e3688",
  "rgb": {
    "r": 30,
    "g": 54,
    "b": 136
  },
  "hsl": {
    "h": 226.415,
    "s": 63.855,
    "l": 32.549
  },
  "oklch": {
    "l": 0.36892,
    "c": 0.14011,
    "h": 266.8
  },
  "luminance": 0.04692
}

Semantic roles & 50–950 ramp

primary

#1E3688

secondary

#B9A049

accent

#C141E7

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #1E3688

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

Preview Lab → · Contrast checker → · Palette generator →