#1D4C9E#1D4C9E

#1D4C9E is a dark, vivid blue. Relative luminance 0.079; OKLCH L 43.4% C 0.143 H 260.7°. Best body text is #FFFFFF at 8.14:1 contrast (WCAG AA passes).

Color values

HEX	#1D4C9E
RGB	rgb(29, 76, 158)
HSL	hsl(218, 69%, 37%)
HSV	hsv(218, 82%, 62%)
CMYK	cmyk(81.6%, 51.9%, 0%, 38%)
CIE-LAB	lab(33.77, 15.55, -49.04)
CIE-LCH	lch(33.77, 51.45, 287.60°)
OKLab	oklab(43.42% -0.0232 -0.1413)
OKLCH	oklch(43.42% 0.143 260.7)
XYZ	xyz(9.2605, 7.8976, 33.3774)
Luminance	0.0790 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4C9E #9E6F1D

analogous

#1D8D9E #1D4C9E #2F1D9E

triadic

#1D4C9E #9E1D4C #4C9E1D

tetradic

#1D4C9E #9E1D8D #9E6F1D #1D9E2F

square

#1D4C9E #9E1D8D #9E6F1D #1D9E2F

split-complementary

#1D4C9E #9E2F1D #8D9E1D

monochromatic

#0A1A37 #14336A #1D4C9E #2665D2 #5688E0

Accessibility & contrast

On white

8.14

#1D4C9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#1D4C9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4C9E

8.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4C9E	#FFFFFF	#000000	##FFFFFF
##1D4C9E	1.00	8.14	2.58	8.14
#FFFFFF	8.14	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1656A1

Deuteranopia (green-blind)

#004A9C

Tritanopia (blue-blind)

#00606D

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1d4c9e;
/* rgb */ color: rgb(29, 76, 158);
/* oklch */ color: oklch(43.4% 0.143 260.7);

Tailwind

colors: {
  custom: {
    50: '#6f7dbb',
    500: '#1d4c9e',
    950: '#000000',
  },
}

SCSS

$custom: #1d4c9e;
$custom-light: #6f7dbb;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4c9e",
  "rgb": {
    "r": 29,
    "g": 76,
    "b": 158
  },
  "hsl": {
    "h": 218.14,
    "s": 68.984,
    "l": 36.667
  },
  "oklch": {
    "l": 0.43421,
    "c": 0.14315,
    "h": 260.7
  },
  "luminance": 0.07899
}

Semantic roles & 50–950 ramp

primary

#1D4C9E

secondary

#C39B54

accent

#AC3CEC

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1D4C9E

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

Preview Lab → · Contrast checker → · Palette generator →