#1D387E#1D387E

#1D387E is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.4% C 0.123 H 264.9°. Best body text is #FFFFFF at 10.94:1 contrast (WCAG AA passes).

Color values

HEX	#1D387E
RGB	rgb(29, 56, 126)
HSL	hsl(223, 63%, 30%)
HSV	hsv(223, 77%, 49%)
CMYK	cmyk(77%, 55.6%, 0%, 50.6%)
CIE-LAB	lab(25.55, 16.45, -42.66)
CIE-LCH	lch(25.55, 45.72, 291.09°)
OKLab	oklab(36.41% -0.0109 -0.1229)
OKLCH	oklch(36.41% 0.123 264.9)
XYZ	xyz(5.6854, 4.5953, 20.3220)
Luminance	0.0460 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D387E #7E631D

analogous

#1D687E #1D387E #321D7E

triadic

#1D387E #7E1D38 #387E1D

tetradic

#1D387E #7E1D68 #7E631D #1D7E32

square

#1D387E #7E1D68 #7E631D #1D7E32

split-complementary

#1D387E #7E321D #687E1D

monochromatic

#060C1B #12224C #1D387E #284EB0 #426AD3

Accessibility & contrast

On white

10.94

#1D387E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#1D387E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D387E

10.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D387E	#FFFFFF	#000000	##FFFFFF
##1D387E	1.00	10.94	1.92	10.94
#FFFFFF	10.94	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#024180

Deuteranopia (green-blind)

#00387D

Tritanopia (blue-blind)

#004955

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1d387e;
/* rgb */ color: rgb(29, 56, 126);
/* oklch */ color: oklch(36.4% 0.123 264.9);

Tailwind

colors: {
  custom: {
    50: '#686ea4',
    500: '#1d387e',
    950: '#000000',
  },
}

SCSS

$custom: #1d387e;
$custom-light: #686ea4;
$custom-dark: #000000;

JSON

{
  "hex": "#1d387e",
  "rgb": {
    "r": 29,
    "g": 56,
    "b": 126
  },
  "hsl": {
    "h": 223.299,
    "s": 62.581,
    "l": 30.392
  },
  "oklch": {
    "l": 0.36409,
    "c": 0.12334,
    "h": 264.9
  },
  "luminance": 0.04596
}

Semantic roles & 50–950 ramp

primary

#1D387E

secondary

#B19345

accent

#B842E6

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #1D387E

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

Preview Lab → · Contrast checker → · Palette generator →