#1D4B9C#1D4B9C

#1D4B9C is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.0% C 0.142 H 260.8°. Best body text is #FFFFFF at 8.27:1 contrast (WCAG AA passes).

Color values

HEX	#1D4B9C
RGB	rgb(29, 75, 156)
HSL	hsl(218, 69%, 36%)
HSV	hsv(218, 81%, 61%)
CMYK	cmyk(81.4%, 51.9%, 0%, 38.8%)
CIE-LAB	lab(33.33, 15.43, -48.54)
CIE-LCH	lch(33.33, 50.93, 287.63°)
OKLab	oklab(43.04% -0.0227 -0.1398)
OKLCH	oklch(43.04% 0.142 260.8)
XYZ	xyz(9.0213, 7.6926, 32.4554)
Luminance	0.0769 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4B9C #9C6E1D

analogous

#1D8B9C #1D4B9C #2F1D9C

triadic

#1D4B9C #9C1D4B #4B9C1D

tetradic

#1D4B9C #9C1D8B #9C6E1D #1D9C2F

square

#1D4B9C #9C1D8B #9C6E1D #1D9C2F

split-complementary

#1D4B9C #9C2F1D #8B9C1D

monochromatic

#0A1935 #133268 #1D4B9C #2764D0 #5487DF

Accessibility & contrast

On white

8.27

#1D4B9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#1D4B9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4B9C

8.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4B9C	#FFFFFF	#000000	##FFFFFF
##1D4B9C	1.00	8.27	2.54	8.27
#FFFFFF	8.27	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#16549F

Deuteranopia (green-blind)

#00499A

Tritanopia (blue-blind)

#005F6C

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1d4b9c;
/* rgb */ color: rgb(29, 75, 156);
/* oklch */ color: oklch(43.0% 0.142 260.8);

Tailwind

colors: {
  custom: {
    50: '#6f7cba',
    500: '#1d4b9c',
    950: '#000000',
  },
}

SCSS

$custom: #1d4b9c;
$custom-light: #6f7cba;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4b9c",
  "rgb": {
    "r": 29,
    "g": 75,
    "b": 156
  },
  "hsl": {
    "h": 218.268,
    "s": 68.649,
    "l": 36.275
  },
  "oklch": {
    "l": 0.43043,
    "c": 0.14161,
    "h": 260.8
  },
  "luminance": 0.07694
}

Semantic roles & 50–950 ramp

primary

#1D4B9C

secondary

#C29A52

accent

#AC3CEB

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080912

muted

#7B7B81

Preview Lab

Preview with #1D4B9C

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

Preview Lab → · Contrast checker → · Palette generator →