#1D4B9A#1D4B9A

#1D4B9A is a dark, vivid blue. Relative luminance 0.076; OKLCH L 42.9% C 0.139 H 260.5°. Best body text is #FFFFFF at 8.32:1 contrast (WCAG AA passes).

Color values

HEX	#1D4B9A
RGB	rgb(29, 75, 154)
HSL	hsl(218, 68%, 36%)
HSV	hsv(218, 81%, 60%)
CMYK	cmyk(81.2%, 51.3%, 0%, 39.6%)
CIE-LAB	lab(33.19, 14.63, -47.56)
CIE-LCH	lch(33.19, 49.76, 287.09°)
OKLab	oklab(42.89% -0.0229 -0.1369)
OKLCH	oklch(42.89% 0.139 260.5)
XYZ	xyz(8.8534, 7.6254, 31.5708)
Luminance	0.0763 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4B9A #9A6C1D

analogous

#1D899A #1D4B9A #2D1D9A

triadic

#1D4B9A #9A1D4B #4B9A1D

tetradic

#1D4B9A #9A1D89 #9A6C1D #1D9A2D

square

#1D4B9A #9A1D89 #9A6C1D #1D9A2D

split-complementary

#1D4B9A #9A2D1D #899A1D

monochromatic

#0A1933 #133266 #1D4B9A #2764CE #5386DF

Accessibility & contrast

On white

8.32

#1D4B9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#1D4B9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4B9A

8.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4B9A	#FFFFFF	#000000	##FFFFFF
##1D4B9A	1.00	8.32	2.53	8.32
#FFFFFF	8.32	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#19549D

Deuteranopia (green-blind)

#004998

Tritanopia (blue-blind)

#005E6B

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1d4b9a;
/* rgb */ color: rgb(29, 75, 154);
/* oklch */ color: oklch(42.9% 0.139 260.5);

Tailwind

colors: {
  custom: {
    50: '#6e7cb8',
    500: '#1d4b9a',
    950: '#000000',
  },
}

SCSS

$custom: #1d4b9a;
$custom-light: #6e7cb8;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4b9a",
  "rgb": {
    "r": 29,
    "g": 75,
    "b": 154
  },
  "hsl": {
    "h": 217.92,
    "s": 68.306,
    "l": 35.882
  },
  "oklch": {
    "l": 0.42887,
    "c": 0.13883,
    "h": 260.5
  },
  "luminance": 0.07626
}

Semantic roles & 50–950 ramp

primary

#1D4B9A

secondary

#C29851

accent

#AB3DEB

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1D4B9A

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

Preview Lab → · Contrast checker → · Palette generator →