#1D4D99#1D4D99

#1D4D99 is a dark, vivid blue. Relative luminance 0.079; OKLCH L 43.3% C 0.135 H 259.5°. Best body text is #FFFFFF at 8.16:1 contrast (WCAG AA passes).

Color values

HEX	#1D4D99
RGB	rgb(29, 77, 153)
HSL	hsl(217, 68%, 36%)
HSV	hsv(217, 81%, 60%)
CMYK	cmyk(81%, 49.7%, 0%, 40%)
CIE-LAB	lab(33.71, 12.87, -46.13)
CIE-LCH	lch(33.71, 47.89, 285.59°)
OKLab	oklab(43.26% -0.0246 -0.1326)
OKLCH	oklch(43.26% 0.135 259.5)
XYZ	xyz(8.9082, 7.8678, 31.1800)
Luminance	0.0787 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4D99 #99691D

analogous

#1D8B99 #1D4D99 #2B1D99

triadic

#1D4D99 #991D4D #4D991D

tetradic

#1D4D99 #991D8B #99691D #1D992B

square

#1D4D99 #991D8B #99691D #1D992B

split-complementary

#1D4D99 #992B1D #8B991D

monochromatic

#091932 #133366 #1D4D99 #2767CC #5288DE

Accessibility & contrast

On white

8.16

#1D4D99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#1D4D99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4D99

8.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4D99	#FFFFFF	#000000	##FFFFFF
##1D4D99	1.00	8.16	2.57	8.16
#FFFFFF	8.16	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#20559C

Deuteranopia (green-blind)

#004A97

Tritanopia (blue-blind)

#005F6B

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1d4d99;
/* rgb */ color: rgb(29, 77, 153);
/* oklch */ color: oklch(43.3% 0.135 259.5);

Tailwind

colors: {
  custom: {
    50: '#6e7eb8',
    500: '#1d4d99',
    950: '#000000',
  },
}

SCSS

$custom: #1d4d99;
$custom-light: #6e7eb8;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4d99",
  "rgb": {
    "r": 29,
    "g": 77,
    "b": 153
  },
  "hsl": {
    "h": 216.774,
    "s": 68.132,
    "l": 35.686
  },
  "oklch": {
    "l": 0.43259,
    "c": 0.13492,
    "h": 259.5
  },
  "luminance": 0.07869
}

Semantic roles & 50–950 ramp

primary

#1D4D99

secondary

#C19651

accent

#A83DEB

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1D4D99

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

Preview Lab → · Contrast checker → · Palette generator →