#1D4B9D#1D4B9D

#1D4B9D is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.1% C 0.143 H 260.9°. Best body text is #FFFFFF at 8.25:1 contrast (WCAG AA passes).

Color values

HEX	#1D4B9D
RGB	rgb(29, 75, 157)
HSL	hsl(218, 69%, 36%)
HSV	hsv(218, 82%, 62%)
CMYK	cmyk(81.5%, 52.2%, 0%, 38.4%)
CIE-LAB	lab(33.41, 15.83, -49.03)
CIE-LCH	lch(33.41, 51.52, 287.89°)
OKLab	oklab(43.12% -0.0225 -0.1412)
OKLCH	oklch(43.12% 0.143 260.9)
XYZ	xyz(9.1064, 7.7266, 32.9032)
Luminance	0.0773 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4B9D #9D6F1D

analogous

#1D8B9D #1D4B9D #2F1D9D

triadic

#1D4B9D #9D1D4B #4B9D1D

tetradic

#1D4B9D #9D1D8B #9D6F1D #1D9D2F

square

#1D4B9D #9D1D8B #9D6F1D #1D9D2F

split-complementary

#1D4B9D #9D2F1D #8B9D1D

monochromatic

#0A1A36 #133269 #1D4B9D #2764D1 #5587E0

Accessibility & contrast

On white

8.25

#1D4B9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#1D4B9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4B9D

8.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4B9D	#FFFFFF	#000000	##FFFFFF
##1D4B9D	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)

#1455A0

Deuteranopia (green-blind)

#00499B

Tritanopia (blue-blind)

#005F6C

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1d4b9d;
/* rgb */ color: rgb(29, 75, 157);
/* oklch */ color: oklch(43.1% 0.143 260.9);

Tailwind

colors: {
  custom: {
    50: '#6f7cba',
    500: '#1d4b9d',
    950: '#000000',
  },
}

SCSS

$custom: #1d4b9d;
$custom-light: #6f7cba;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4b9d",
  "rgb": {
    "r": 29,
    "g": 75,
    "b": 157
  },
  "hsl": {
    "h": 218.438,
    "s": 68.817,
    "l": 36.471
  },
  "oklch": {
    "l": 0.43121,
    "c": 0.14302,
    "h": 260.9
  },
  "luminance": 0.07728
}

Semantic roles & 50–950 ramp

primary

#1D4B9D

secondary

#C39B53

accent

#AD3CEC

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1D4B9D

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

Preview Lab → · Contrast checker → · Palette generator →