#1E3791#1E3791

#1E3791 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.9% C 0.151 H 266.8°. Best body text is #FFFFFF at 10.44:1 contrast (WCAG AA passes).

Color values

HEX	#1E3791
RGB	rgb(30, 55, 145)
HSL	hsl(227, 66%, 34%)
HSV	hsv(227, 79%, 57%)
CMYK	cmyk(79.3%, 62.1%, 0%, 43.1%)
CIE-LAB	lab(26.88, 24.85, -52.32)
CIE-LCH	lch(26.88, 57.92, 295.41°)
OKLab	oklab(37.91% -0.0084 -0.1512)
OKLCH	oklch(37.91% 0.151 266.8)
XYZ	xyz(7.0107, 5.0519, 27.3882)
Luminance	0.0505 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1E3791 #91781E

analogous

#1E7091 #1E3791 #3F1E91

triadic

#1E3791 #911E37 #37911E

tetradic

#1E3791 #911E70 #91781E #1E913F

square

#1E3791 #911E70 #91781E #1E913F

split-complementary

#1E3791 #913F1E #70911E

monochromatic

#09112C #14245E #1E3791 #284AC4 #4F6DDB

Accessibility & contrast

On white

10.44

#1E3791 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#1E3791 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1E3791

10.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1E3791	#FFFFFF	#000000	##FFFFFF
##1E3791	1.00	10.44	2.01	10.44
#FFFFFF	10.44	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004594

Deuteranopia (green-blind)

#003A8F

Tritanopia (blue-blind)

#004E5E

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1e3791;
/* rgb */ color: rgb(30, 55, 145);
/* oklch */ color: oklch(37.9% 0.151 266.8);

Tailwind

colors: {
  custom: {
    50: '#6d6db2',
    500: '#1e3791',
    950: '#000000',
  },
}

SCSS

$custom: #1e3791;
$custom-light: #6d6db2;
$custom-dark: #000000;

JSON

{
  "hex": "#1e3791",
  "rgb": {
    "r": 30,
    "g": 55,
    "b": 145
  },
  "hsl": {
    "h": 226.957,
    "s": 65.714,
    "l": 34.314
  },
  "oklch": {
    "l": 0.37912,
    "c": 0.15146,
    "h": 266.8
  },
  "luminance": 0.05053
}

Semantic roles & 50–950 ramp

primary

#1E3791

secondary

#BDA54D

accent

#C43FE9

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #1E3791

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

Preview Lab → · Contrast checker → · Palette generator →