#1D4081#1D4081

#1D4081 is a dark, moderate blue. Relative luminance 0.055; OKLCH L 38.5% C 0.117 H 261.4°. Best body text is #FFFFFF at 9.99:1 contrast (WCAG AA passes).

Color values

HEX	#1D4081
RGB	rgb(29, 64, 129)
HSL	hsl(219, 63%, 31%)
HSV	hsv(219, 78%, 51%)
CMYK	cmyk(77.5%, 50.4%, 0%, 49.4%)
CIE-LAB	lab(28.15, 12.07, -40.34)
CIE-LCH	lch(28.15, 42.11, 286.66°)
OKLab	oklab(38.46% -0.0175 -0.1159)
OKLCH	oklch(38.46% 0.117 261.4)
XYZ	xyz(6.3011, 5.5123, 21.4965)
Luminance	0.0551 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4081 #815E1D

analogous

#1D7281 #1D4081 #2C1D81

triadic

#1D4081 #811D40 #40811D

tetradic

#1D4081 #811D72 #815E1D #1D812C

square

#1D4081 #811D72 #815E1D #1D812C

split-complementary

#1D4081 #812C1D #72811D

monochromatic

#070E1D #12274F #1D4081 #2859B3 #4476D5

Accessibility & contrast

On white

9.99

#1D4081 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#1D4081 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4081

9.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4081	#FFFFFF	#000000	##FFFFFF
##1D4081	1.00	9.99	2.10	9.99
#FFFFFF	9.99	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	9.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B4783

Deuteranopia (green-blind)

#003E80

Tritanopia (blue-blind)

#004F5A

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1d4081;
/* rgb */ color: rgb(29, 64, 129);
/* oklch */ color: oklch(38.5% 0.117 261.4);

Tailwind

colors: {
  custom: {
    50: '#6874a6',
    500: '#1d4081',
    950: '#000000',
  },
}

SCSS

$custom: #1d4081;
$custom-light: #6874a6;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4081",
  "rgb": {
    "r": 29,
    "g": 64,
    "b": 129
  },
  "hsl": {
    "h": 219,
    "s": 63.291,
    "l": 30.98
  },
  "oklch": {
    "l": 0.38458,
    "c": 0.1172,
    "h": 261.4
  },
  "luminance": 0.05513
}

Semantic roles & 50–950 ramp

primary

#1D4081

secondary

#B48D46

accent

#AD41E6

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1D4081

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

Preview Lab → · Contrast checker → · Palette generator →