#1D388F#1D388F

#1D388F is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.9% C 0.148 H 266.1°. Best body text is #FFFFFF at 10.42:1 contrast (WCAG AA passes).

Color values

HEX	#1D388F
RGB	rgb(29, 56, 143)
HSL	hsl(226, 66%, 34%)
HSV	hsv(226, 80%, 56%)
CMYK	cmyk(79.7%, 60.8%, 0%, 43.9%)
CIE-LAB	lab(26.94, 23.27, -50.99)
CIE-LCH	lch(26.94, 56.05, 294.53°)
OKLab	oklab(37.89% -0.0099 -0.1473)
OKLCH	oklch(37.89% 0.148 266.1)
XYZ	xyz(6.8771, 5.0719, 26.5978)
Luminance	0.0507 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D388F #8F741D

analogous

#1D718F #1D388F #3B1D8F

triadic

#1D388F #8F1D38 #388F1D

tetradic

#1D388F #8F1D71 #8F741D #1D8F3B

square

#1D388F #8F1D71 #8F741D #1D8F3B

split-complementary

#1D388F #8F3B1D #718F1D

monochromatic

#081029 #13245C #1D388F #274CC2 #4C6EDB

Accessibility & contrast

On white

10.42

#1D388F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#1D388F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D388F

10.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D388F	#FFFFFF	#000000	##FFFFFF
##1D388F	1.00	10.42	2.01	10.42
#FFFFFF	10.42	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004592

Deuteranopia (green-blind)

#003B8D

Tritanopia (blue-blind)

#004E5E

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1d388f;
/* rgb */ color: rgb(29, 56, 143);
/* oklch */ color: oklch(37.9% 0.148 266.1);

Tailwind

colors: {
  custom: {
    50: '#6d6eb1',
    500: '#1d388f',
    950: '#000000',
  },
}

SCSS

$custom: #1d388f;
$custom-light: #6d6eb1;
$custom-dark: #000000;

JSON

{
  "hex": "#1d388f",
  "rgb": {
    "r": 29,
    "g": 56,
    "b": 143
  },
  "hsl": {
    "h": 225.789,
    "s": 66.279,
    "l": 33.725
  },
  "oklch": {
    "l": 0.37889,
    "c": 0.14769,
    "h": 266.1
  },
  "luminance": 0.05073
}

Semantic roles & 50–950 ramp

primary

#1D388F

secondary

#BDA24B

accent

#C13FE9

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #1D388F

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

Preview Lab → · Contrast checker → · Palette generator →