#1E288B#1E288B

#1E288B is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.5% C 0.161 H 270.3°. Best body text is #FFFFFF at 12.13:1 contrast (WCAG AA passes).

Color values

HEX	#1E288B
RGB	rgb(30, 40, 139)
HSL	hsl(234, 64%, 33%)
HSV	hsv(234, 78%, 55%)
CMYK	cmyk(78.4%, 71.2%, 0%, 45.5%)
CIE-LAB	lab(22.50, 32.60, -55.78)
CIE-LCH	lch(22.50, 64.61, 300.30°)
OKLab	oklab(34.53% 0.0009 -0.1615)
OKLCH	oklch(34.53% 0.161 270.3)
XYZ	xyz(5.9528, 3.6570, 24.8132)
Luminance	0.0366 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1E288B #8B811E

analogous

#1E5F8B #1E288B #4A1E8B

triadic

#1E288B #8B1E28 #288B1E

tetradic

#1E288B #8B1E5F #8B811E #1E8B4A

square

#1E288B #8B1E5F #8B811E #1E8B4A

split-complementary

#1E288B #8B4A1E #5F8B1E

monochromatic

#080B26 #131A59 #1E288B #2936BD #4B58D8

Accessibility & contrast

On white

12.13

#1E288B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#1E288B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1E288B

12.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1E288B	#FFFFFF	#000000	##FFFFFF
##1E288B	1.00	12.13	1.73	12.13
#FFFFFF	12.13	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B8E

Deuteranopia (green-blind)

#003189

Tritanopia (blue-blind)

#004356

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1e288b;
/* rgb */ color: rgb(30, 40, 139);
/* oklch */ color: oklch(34.5% 0.161 270.3);

Tailwind

colors: {
  custom: {
    50: '#6d62ae',
    500: '#1e288b',
    950: '#000000',
  },
}

SCSS

$custom: #1e288b;
$custom-light: #6d62ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1e288b",
  "rgb": {
    "r": 30,
    "g": 40,
    "b": 139
  },
  "hsl": {
    "h": 234.495,
    "s": 64.497,
    "l": 33.137
  },
  "oklch": {
    "l": 0.34527,
    "c": 0.16147,
    "h": 270.3
  },
  "luminance": 0.03658
}

Semantic roles & 50–950 ramp

primary

#1E288B

secondary

#BBB04A

accent

#D840E7

background

#F7F5FA

surface

#EDEAF4

border

#C8C6CE

text

#080510

muted

#7B797F

Preview Lab

Preview with #1E288B

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

Preview Lab → · Contrast checker → · Palette generator →