#1D387B#1D387B

#1D387B is a dark, moderate blue. Relative luminance 0.045; OKLCH L 36.2% C 0.119 H 264.6°. Best body text is #FFFFFF at 11.03:1 contrast (WCAG AA passes).

Color values

HEX	#1D387B
RGB	rgb(29, 56, 123)
HSL	hsl(223, 62%, 30%)
HSV	hsv(223, 76%, 48%)
CMYK	cmyk(76.4%, 54.5%, 0%, 51.8%)
CIE-LAB	lab(25.32, 15.24, -41.14)
CIE-LCH	lch(25.32, 43.88, 290.32°)
OKLab	oklab(36.16% -0.0112 -0.1184)
OKLCH	oklch(36.16% 0.119 264.6)
XYZ	xyz(5.4948, 4.5190, 19.3177)
Luminance	0.0452 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D387B #7B601D

analogous

#1D677B #1D387B #311D7B

triadic

#1D387B #7B1D38 #387B1D

tetradic

#1D387B #7B1D67 #7B601D #1D7B31

square

#1D387B #7B1D67 #7B601D #1D7B31

split-complementary

#1D387B #7B311D #677B1D

monochromatic

#060B19 #112149 #1D387B #294FAD #406AD2

Accessibility & contrast

On white

11.03

#1D387B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#1D387B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D387B

11.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D387B	#FFFFFF	#000000	##FFFFFF
##1D387B	1.00	11.03	1.90	11.03
#FFFFFF	11.03	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A417D

Deuteranopia (green-blind)

#00387A

Tritanopia (blue-blind)

#004854

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1d387b;
/* rgb */ color: rgb(29, 56, 123);
/* oklch */ color: oklch(36.2% 0.119 264.6);

Tailwind

colors: {
  custom: {
    50: '#676ea2',
    500: '#1d387b',
    950: '#000000',
  },
}

SCSS

$custom: #1d387b;
$custom-light: #676ea2;
$custom-dark: #000000;

JSON

{
  "hex": "#1d387b",
  "rgb": {
    "r": 29,
    "g": 56,
    "b": 123
  },
  "hsl": {
    "h": 222.766,
    "s": 61.842,
    "l": 29.804
  },
  "oklch": {
    "l": 0.3616,
    "c": 0.11893,
    "h": 264.6
  },
  "luminance": 0.0452
}

Semantic roles & 50–950 ramp

primary

#1D387B

secondary

#AF9045

accent

#B643E5

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #1D387B

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

Preview Lab → · Contrast checker → · Palette generator →