#1D4A9B#1D4A9B

#1D4A9B is a dark, vivid blue. Relative luminance 0.075; OKLCH L 42.7% C 0.141 H 261.0°. Best body text is #FFFFFF at 8.38:1 contrast (WCAG AA passes).

Color values

HEX	#1D4A9B
RGB	rgb(29, 74, 155)
HSL	hsl(219, 68%, 36%)
HSV	hsv(219, 81%, 61%)
CMYK	cmyk(81.3%, 52.3%, 0%, 39.2%)
CIE-LAB	lab(32.97, 15.71, -48.52)
CIE-LCH	lch(32.97, 51.00, 287.94°)
OKLab	oklab(42.74% -0.022 -0.1398)
OKLCH	oklch(42.74% 0.141 261)
XYZ	xyz(8.8697, 7.5243, 31.9888)
Luminance	0.0752 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4A9B #9B6E1D

analogous

#1D899B #1D4A9B #2F1D9B

triadic

#1D4A9B #9B1D4A #4A9B1D

tetradic

#1D4A9B #9B1D89 #9B6E1D #1D9B2F

square

#1D4A9B #9B1D89 #9B6E1D #1D9B2F

split-complementary

#1D4A9B #9B2F1D #899B1D

monochromatic

#0A1934 #133167 #1D4A9B #2763CF #5385DF

Accessibility & contrast

On white

8.38

#1D4A9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#1D4A9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4A9B

8.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4A9B	#FFFFFF	#000000	##FFFFFF
##1D4A9B	1.00	8.38	2.51	8.38
#FFFFFF	8.38	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#14549E

Deuteranopia (green-blind)

#004899

Tritanopia (blue-blind)

#005E6B

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1d4a9b;
/* rgb */ color: rgb(29, 74, 155);
/* oklch */ color: oklch(42.7% 0.141 261.0);

Tailwind

colors: {
  custom: {
    50: '#6e7bb9',
    500: '#1d4a9b',
    950: '#000000',
  },
}

SCSS

$custom: #1d4a9b;
$custom-light: #6e7bb9;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4a9b",
  "rgb": {
    "r": 29,
    "g": 74,
    "b": 155
  },
  "hsl": {
    "h": 218.571,
    "s": 68.478,
    "l": 36.078
  },
  "oklch": {
    "l": 0.42743,
    "c": 0.14149,
    "h": 261
  },
  "luminance": 0.07525
}

Semantic roles & 50–950 ramp

primary

#1D4A9B

secondary

#C29A52

accent

#AD3CEB

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1D4A9B

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

Preview Lab → · Contrast checker → · Palette generator →