#1D408B#1D408B

#1D408B is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.3% C 0.132 H 263.0°. Best body text is #FFFFFF at 9.73:1 contrast (WCAG AA passes).

Color values

HEX	#1D408B
RGB	rgb(29, 64, 139)
HSL	hsl(221, 65%, 33%)
HSV	hsv(221, 79%, 55%)
CMYK	cmyk(79.1%, 54%, 0%, 45.5%)
CIE-LAB	lab(28.88, 16.12, -45.37)
CIE-LCH	lch(28.88, 48.15, 289.56°)
OKLab	oklab(39.25% -0.0161 -0.1307)
OKLCH	oklch(39.25% 0.132 263)
XYZ	xyz(6.9986, 5.7913, 25.1701)
Luminance	0.0579 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D408B #8B681D

analogous

#1D778B #1D408B #311D8B

triadic

#1D408B #8B1D40 #408B1D

tetradic

#1D408B #8B1D77 #8B681D #1D8B31

square

#1D408B #8B1D77 #8B681D #1D8B31

split-complementary

#1D408B #8B311D #778B1D

monochromatic

#081126 #122958 #1D408B #2857BE #4977D9

Accessibility & contrast

On white

9.73

#1D408B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#1D408B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D408B

9.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D408B	#FFFFFF	#000000	##FFFFFF
##1D408B	1.00	9.73	2.16	9.73
#FFFFFF	9.73	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A498E

Deuteranopia (green-blind)

#003F8A

Tritanopia (blue-blind)

#00525F

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1d408b;
/* rgb */ color: rgb(29, 64, 139);
/* oklch */ color: oklch(39.3% 0.132 263.0);

Tailwind

colors: {
  custom: {
    50: '#6b74ad',
    500: '#1d408b',
    950: '#000000',
  },
}

SCSS

$custom: #1d408b;
$custom-light: #6b74ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1d408b",
  "rgb": {
    "r": 29,
    "g": 64,
    "b": 139
  },
  "hsl": {
    "h": 220.909,
    "s": 65.476,
    "l": 32.941
  },
  "oklch": {
    "l": 0.3925,
    "c": 0.13167,
    "h": 263
  },
  "luminance": 0.05792
}

Semantic roles & 50–950 ramp

primary

#1D408B

secondary

#BB9749

accent

#B33FE8

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #1D408B

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

Preview Lab → · Contrast checker → · Palette generator →