#1D4D9C#1D4D9C

#1D4D9C is a dark, vivid blue. Relative luminance 0.080; OKLCH L 43.5% C 0.139 H 260.0°. Best body text is #FFFFFF at 8.10:1 contrast (WCAG AA passes).

Color values

HEX	#1D4D9C
RGB	rgb(29, 77, 156)
HSL	hsl(217, 69%, 36%)
HSV	hsv(217, 81%, 61%)
CMYK	cmyk(81.4%, 50.6%, 0%, 38.8%)
CIE-LAB	lab(33.92, 14.07, -47.60)
CIE-LCH	lch(33.92, 49.64, 286.47°)
OKLab	oklab(43.49% -0.0242 -0.137)
OKLCH	oklch(43.49% 0.139 260)
XYZ	xyz(9.1591, 7.9682, 32.5013)
Luminance	0.0797 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4D9C #9C6C1D

analogous

#1D8D9C #1D4D9C #2D1D9C

triadic

#1D4D9C #9C1D4D #4D9C1D

tetradic

#1D4D9C #9C1D8D #9C6C1D #1D9C2D

square

#1D4D9C #9C1D8D #9C6C1D #1D9C2D

split-complementary

#1D4D9C #9C2D1D #8D9C1D

monochromatic

#0A1A35 #133468 #1D4D9C #2766D0 #5489DF

Accessibility & contrast

On white

8.10

#1D4D9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#1D4D9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4D9C

8.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4D9C	#FFFFFF	#000000	##FFFFFF
##1D4D9C	1.00	8.10	2.59	8.10
#FFFFFF	8.10	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C569F

Deuteranopia (green-blind)

#004A9A

Tritanopia (blue-blind)

#00606D

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1d4d9c;
/* rgb */ color: rgb(29, 77, 156);
/* oklch */ color: oklch(43.5% 0.139 260.0);

Tailwind

colors: {
  custom: {
    50: '#6f7eba',
    500: '#1d4d9c',
    950: '#000000',
  },
}

SCSS

$custom: #1d4d9c;
$custom-light: #6f7eba;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4d9c",
  "rgb": {
    "r": 29,
    "g": 77,
    "b": 156
  },
  "hsl": {
    "h": 217.323,
    "s": 68.649,
    "l": 36.275
  },
  "oklch": {
    "l": 0.43488,
    "c": 0.1391,
    "h": 260
  },
  "luminance": 0.07969
}

Semantic roles & 50–950 ramp

primary

#1D4D9C

secondary

#C29852

accent

#A93CEB

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080912

muted

#7B7B81

Preview Lab

Preview with #1D4D9C

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

Preview Lab → · Contrast checker → · Palette generator →