#1D4E9C#1D4E9C

#1D4E9C is a dark, vivid blue. Relative luminance 0.081; OKLCH L 43.7% C 0.138 H 259.6°. Best body text is #FFFFFF at 8.01:1 contrast (WCAG AA passes).

Color values

HEX	#1D4E9C
RGB	rgb(29, 78, 156)
HSL	hsl(217, 69%, 36%)
HSV	hsv(217, 81%, 61%)
CMYK	cmyk(81.4%, 50%, 0%, 38.8%)
CIE-LAB	lab(34.21, 13.40, -47.13)
CIE-LCH	lch(34.21, 48.99, 285.87°)
OKLab	oklab(43.71% -0.025 -0.1356)
OKLCH	oklch(43.71% 0.138 259.6)
XYZ	xyz(9.2296, 8.1092, 32.5248)
Luminance	0.0811 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4E9C #9C6B1D

analogous

#1D8E9C #1D4E9C #2B1D9C

triadic

#1D4E9C #9C1D4E #4E9C1D

tetradic

#1D4E9C #9C1D8E #9C6B1D #1D9C2B

square

#1D4E9C #9C1D8E #9C6B1D #1D9C2B

split-complementary

#1D4E9C #9C2B1D #8E9C1D

monochromatic

#0A1A35 #133468 #1D4E9C #2768D0 #548ADF

Accessibility & contrast

On white

8.01

#1D4E9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#1D4E9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4E9C

8.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4E9C	#FFFFFF	#000000	##FFFFFF
##1D4E9C	1.00	8.01	2.62	8.01
#FFFFFF	8.01	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F579F

Deuteranopia (green-blind)

#004B9A

Tritanopia (blue-blind)

#00616D

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1d4e9c;
/* rgb */ color: rgb(29, 78, 156);
/* oklch */ color: oklch(43.7% 0.138 259.6);

Tailwind

colors: {
  custom: {
    50: '#6e7eba',
    500: '#1d4e9c',
    950: '#000000',
  },
}

SCSS

$custom: #1d4e9c;
$custom-light: #6e7eba;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4e9c",
  "rgb": {
    "r": 29,
    "g": 78,
    "b": 156
  },
  "hsl": {
    "h": 216.85,
    "s": 68.649,
    "l": 36.275
  },
  "oklch": {
    "l": 0.43712,
    "c": 0.13785,
    "h": 259.6
  },
  "luminance": 0.0811
}

Semantic roles & 50–950 ramp

primary

#1D4E9C

secondary

#C29752

accent

#A83CEB

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080A12

muted

#7B7C81

Preview Lab

Preview with #1D4E9C

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

Preview Lab → · Contrast checker → · Palette generator →