#1D388C#1D388C

#1D388C is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.6% C 0.143 H 266.0°. Best body text is #FFFFFF at 10.52:1 contrast (WCAG AA passes).

Color values

HEX	#1D388C
RGB	rgb(29, 56, 140)
HSL	hsl(225, 66%, 33%)
HSV	hsv(225, 79%, 55%)
CMYK	cmyk(79.3%, 60%, 0%, 45.1%)
CIE-LAB	lab(26.68, 22.08, -49.55)
CIE-LCH	lch(26.68, 54.25, 294.01°)
OKLab	oklab(37.62% -0.01 -0.1431)
OKLCH	oklch(37.62% 0.143 266)
XYZ	xyz(6.6528, 4.9823, 25.4169)
Luminance	0.0498 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D388C #8C711D

analogous

#1D6F8C #1D388C #391D8C

triadic

#1D388C #8C1D38 #388C1D

tetradic

#1D388C #8C1D6F #8C711D #1D8C39

square

#1D388C #8C1D6F #8C711D #1D8C39

split-complementary

#1D388C #8C391D #6F8C1D

monochromatic

#080F27 #122459 #1D388C #284CBF #4A6DD9

Accessibility & contrast

On white

10.52

#1D388C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#1D388C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D388C

10.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D388C	#FFFFFF	#000000	##FFFFFF
##1D388C	1.00	10.52	2.00	10.52
#FFFFFF	10.52	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00448F

Deuteranopia (green-blind)

#003A8A

Tritanopia (blue-blind)

#004D5C

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1d388c;
/* rgb */ color: rgb(29, 56, 140);
/* oklch */ color: oklch(37.6% 0.143 266.0);

Tailwind

colors: {
  custom: {
    50: '#6c6eae',
    500: '#1d388c',
    950: '#000000',
  },
}

SCSS

$custom: #1d388c;
$custom-light: #6c6eae;
$custom-dark: #000000;

JSON

{
  "hex": "#1d388c",
  "rgb": {
    "r": 29,
    "g": 56,
    "b": 140
  },
  "hsl": {
    "h": 225.405,
    "s": 65.68,
    "l": 33.137
  },
  "oklch": {
    "l": 0.37619,
    "c": 0.14347,
    "h": 266
  },
  "luminance": 0.04983
}

Semantic roles & 50–950 ramp

primary

#1D388C

secondary

#BCA049

accent

#BF3FE9

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #1D388C

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

Preview Lab → · Contrast checker → · Palette generator →