#1E3583#1E3583

#1E3583 is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.2% C 0.134 H 266.9°. Best body text is #FFFFFF at 11.10:1 contrast (WCAG AA passes).

Color values

HEX	#1E3583
RGB	rgb(30, 53, 131)
HSL	hsl(226, 63%, 32%)
HSV	hsv(226, 77%, 51%)
CMYK	cmyk(77.1%, 59.5%, 0%, 48.6%)
CIE-LAB	lab(25.14, 20.70, -46.46)
CIE-LCH	lch(25.14, 50.86, 294.01°)
OKLab	oklab(36.24% -0.0073 -0.1341)
OKLCH	oklch(36.24% 0.134 266.9)
XYZ	xyz(5.9038, 4.4603, 22.0181)
Luminance	0.0446 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1E3583 #836C1E

analogous

#1E6883 #1E3583 #3A1E83

triadic

#1E3583 #831E35 #35831E

tetradic

#1E3583 #831E68 #836C1E #1E833A

square

#1E3583 #831E68 #836C1E #1E833A

split-complementary

#1E3583 #833A1E #68831E

monochromatic

#070D1F #132151 #1E3583 #2949B5 #4767D5

Accessibility & contrast

On white

11.10

#1E3583 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#1E3583 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1E3583

11.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1E3583	#FFFFFF	#000000	##FFFFFF
##1E3583	1.00	11.10	1.89	11.10
#FFFFFF	11.10	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004086

Deuteranopia (green-blind)

#003781

Tritanopia (blue-blind)

#004856

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1e3583;
/* rgb */ color: rgb(30, 53, 131);
/* oklch */ color: oklch(36.2% 0.134 266.9);

Tailwind

colors: {
  custom: {
    50: '#6a6ba8',
    500: '#1e3583',
    950: '#000000',
  },
}

SCSS

$custom: #1e3583;
$custom-light: #6a6ba8;
$custom-dark: #000000;

JSON

{
  "hex": "#1e3583",
  "rgb": {
    "r": 30,
    "g": 53,
    "b": 131
  },
  "hsl": {
    "h": 226.337,
    "s": 62.733,
    "l": 31.569
  },
  "oklch": {
    "l": 0.36238,
    "c": 0.13428,
    "h": 266.9
  },
  "luminance": 0.04461
}

Semantic roles & 50–950 ramp

primary

#1E3583

secondary

#B69D47

accent

#C042E6

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070610

muted

#7A7A7F

Preview Lab

Preview with #1E3583

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

Preview Lab → · Contrast checker → · Palette generator →