#1E378B#1E378B

#1E378B is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.4% C 0.143 H 266.6°. Best body text is #FFFFFF at 10.64:1 contrast (WCAG AA passes).

Color values

HEX	#1E378B
RGB	rgb(30, 55, 139)
HSL	hsl(226, 64%, 33%)
HSV	hsv(226, 78%, 55%)
CMYK	cmyk(78.4%, 60.4%, 0%, 45.5%)
CIE-LAB	lab(26.37, 22.49, -49.45)
CIE-LCH	lch(26.37, 54.32, 294.45°)
OKLab	oklab(37.37% -0.0085 -0.1428)
OKLCH	oklch(37.37% 0.143 266.6)
XYZ	xyz(6.5602, 4.8717, 25.0157)
Luminance	0.0487 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1E378B #8B721E

analogous

#1E6D8B #1E378B #3C1E8B

triadic

#1E378B #8B1E37 #378B1E

tetradic

#1E378B #8B1E6D #8B721E #1E8B3C

square

#1E378B #8B1E6D #8B721E #1E8B3C

split-complementary

#1E378B #8B3C1E #6D8B1E

monochromatic

#080F26 #132359 #1E378B #294BBD #4B6CD8

Accessibility & contrast

On white

10.64

#1E378B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#1E378B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1E378B

10.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1E378B	#FFFFFF	#000000	##FFFFFF
##1E378B	1.00	10.64	1.97	10.64
#FFFFFF	10.64	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00448E

Deuteranopia (green-blind)

#003989

Tritanopia (blue-blind)

#004C5B

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1e378b;
/* rgb */ color: rgb(30, 55, 139);
/* oklch */ color: oklch(37.4% 0.143 266.6);

Tailwind

colors: {
  custom: {
    50: '#6c6dae',
    500: '#1e378b',
    950: '#000000',
  },
}

SCSS

$custom: #1e378b;
$custom-light: #6c6dae;
$custom-dark: #000000;

JSON

{
  "hex": "#1e378b",
  "rgb": {
    "r": 30,
    "g": 55,
    "b": 139
  },
  "hsl": {
    "h": 226.239,
    "s": 64.497,
    "l": 33.137
  },
  "oklch": {
    "l": 0.37367,
    "c": 0.14306,
    "h": 266.6
  },
  "luminance": 0.04872
}

Semantic roles & 50–950 ramp

primary

#1E378B

secondary

#BBA14A

accent

#C140E7

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #1E378B

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

Preview Lab → · Contrast checker → · Palette generator →