#1E178B#1E178B

#1E178B is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.1% C 0.178 H 272.5°. Best body text is #FFFFFF at 13.54:1 contrast (WCAG AA passes).

Color values

HEX	#1E178B
RGB	rgb(30, 23, 139)
HSL	hsl(244, 72%, 32%)
HSV	hsv(244, 83%, 55%)
CMYK	cmyk(78.4%, 83.5%, 0%, 45.5%)
CIE-LAB	lab(19.02, 42.44, -61.53)
CIE-LCH	lch(19.02, 74.75, 304.59°)
OKLab	oklab(32.06% 0.0079 -0.178)
OKLCH	oklch(32.06% 0.178 272.5)
XYZ	xyz(5.5005, 2.7523, 24.6624)
Luminance	0.0275 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1E178B #848B17

analogous

#174A8B #1E178B #58178B

triadic

#1E178B #8B1E17 #178B1E

tetradic

#1E178B #8B174A #848B17 #178B58

square

#1E178B #8B174A #848B17 #178B58

split-complementary

#1E178B #8B5817 #4A8B17

monochromatic

#070622 #130E56 #1E178B #2920C0 #473DDF

Accessibility & contrast

On white

13.54

#1E178B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#1E178B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1E178B

13.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1E178B	#FFFFFF	#000000	##FFFFFF
##1E178B	1.00	13.54	1.55	13.54
#FFFFFF	13.54	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00348E

Deuteranopia (green-blind)

#002889

Tritanopia (blue-blind)

#003C52

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1e178b;
/* rgb */ color: rgb(30, 23, 139);
/* oklch */ color: oklch(32.1% 0.178 272.5);

Tailwind

colors: {
  custom: {
    50: '#6f58ae',
    500: '#1e178b',
    950: '#000000',
  },
}

SCSS

$custom: #1e178b;
$custom-light: #6f58ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1e178b",
  "rgb": {
    "r": 30,
    "g": 23,
    "b": 139
  },
  "hsl": {
    "h": 243.621,
    "s": 71.605,
    "l": 31.765
  },
  "oklch": {
    "l": 0.32061,
    "c": 0.1782,
    "h": 272.5
  },
  "luminance": 0.02753
}

Semantic roles & 50–950 ramp

primary

#1E178B

secondary

#B7BF3F

accent

#EE39E3

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#090310

muted

#7B787F

Preview Lab

Preview with #1E178B

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

Preview Lab → · Contrast checker → · Palette generator →