#1E388B#1E388B

#1E388B is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.6% C 0.142 H 266.3°. Best body text is #FFFFFF at 10.53:1 contrast (WCAG AA passes).

Color values

HEX	#1E388B
RGB	rgb(30, 56, 139)
HSL	hsl(226, 64%, 33%)
HSV	hsv(226, 78%, 55%)
CMYK	cmyk(78.4%, 59.7%, 0%, 45.5%)
CIE-LAB	lab(26.64, 21.79, -49.00)
CIE-LCH	lch(26.64, 53.63, 293.98°)
OKLab	oklab(37.57% -0.0092 -0.1415)
OKLCH	oklch(37.57% 0.142 266.3)
XYZ	xyz(6.6082, 4.9677, 25.0317)
Luminance	0.0497 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1E388B #8B711E

analogous

#1E6E8B #1E388B #3A1E8B

triadic

#1E388B #8B1E38 #388B1E

tetradic

#1E388B #8B1E6E #8B711E #1E8B3A

square

#1E388B #8B1E6E #8B711E #1E8B3A

split-complementary

#1E388B #8B3A1E #6E8B1E

monochromatic

#080F26 #132459 #1E388B #294CBD #4B6DD8

Accessibility & contrast

On white

10.53

#1E388B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#1E388B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1E388B

10.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1E388B	#FFFFFF	#000000	##FFFFFF
##1E388B	1.00	10.53	1.99	10.53
#FFFFFF	10.53	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00448E

Deuteranopia (green-blind)

#003A89

Tritanopia (blue-blind)

#004D5C

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1e388b;
/* rgb */ color: rgb(30, 56, 139);
/* oklch */ color: oklch(37.6% 0.142 266.3);

Tailwind

colors: {
  custom: {
    50: '#6c6eae',
    500: '#1e388b',
    950: '#000000',
  },
}

SCSS

$custom: #1e388b;
$custom-light: #6c6eae;
$custom-dark: #000000;

JSON

{
  "hex": "#1e388b",
  "rgb": {
    "r": 30,
    "g": 56,
    "b": 139
  },
  "hsl": {
    "h": 225.688,
    "s": 64.497,
    "l": 33.137
  },
  "oklch": {
    "l": 0.37574,
    "c": 0.14178,
    "h": 266.3
  },
  "luminance": 0.04968
}

Semantic roles & 50–950 ramp

primary

#1E388B

secondary

#BBA04A

accent

#C040E7

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #1E388B

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

Preview Lab → · Contrast checker → · Palette generator →