#1D4C99#1D4C99

#1D4C99 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.0% C 0.136 H 259.9°. Best body text is #FFFFFF at 8.25:1 contrast (WCAG AA passes).

Color values

HEX	#1D4C99
RGB	rgb(29, 76, 153)
HSL	hsl(217, 68%, 36%)
HSV	hsv(217, 81%, 60%)
CMYK	cmyk(81%, 50.3%, 0%, 40%)
CIE-LAB	lab(33.41, 13.55, -46.60)
CIE-LCH	lch(33.41, 48.53, 286.21°)
OKLab	oklab(43.03% -0.0238 -0.1341)
OKLCH	oklch(43.03% 0.136 259.9)
XYZ	xyz(8.8388, 7.7289, 31.1568)
Luminance	0.0773 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4C99 #996A1D

analogous

#1D8A99 #1D4C99 #2C1D99

triadic

#1D4C99 #991D4C #4C991D

tetradic

#1D4C99 #991D8A #996A1D #1D992C

square

#1D4C99 #991D8A #996A1D #1D992C

split-complementary

#1D4C99 #992C1D #8A991D

monochromatic

#091932 #133266 #1D4C99 #2766CC #5287DE

Accessibility & contrast

On white

8.25

#1D4C99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#1D4C99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4C99

8.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4C99	#FFFFFF	#000000	##FFFFFF
##1D4C99	1.00	8.25	2.55	8.25
#FFFFFF	8.25	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E559C

Deuteranopia (green-blind)

#004997

Tritanopia (blue-blind)

#005F6B

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1d4c99;
/* rgb */ color: rgb(29, 76, 153);
/* oklch */ color: oklch(43.0% 0.136 259.9);

Tailwind

colors: {
  custom: {
    50: '#6e7db8',
    500: '#1d4c99',
    950: '#000000',
  },
}

SCSS

$custom: #1d4c99;
$custom-light: #6e7db8;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4c99",
  "rgb": {
    "r": 29,
    "g": 76,
    "b": 153
  },
  "hsl": {
    "h": 217.258,
    "s": 68.132,
    "l": 35.686
  },
  "oklch": {
    "l": 0.43034,
    "c": 0.13617,
    "h": 259.9
  },
  "luminance": 0.0773
}

Semantic roles & 50–950 ramp

primary

#1D4C99

secondary

#C19751

accent

#A93DEB

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1D4C99

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

Preview Lab → · Contrast checker → · Palette generator →