#1D4A99#1D4A99

#1D4A99 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 42.6% C 0.139 H 260.8°. Best body text is #FFFFFF at 8.43:1 contrast (WCAG AA passes).

Color values

HEX	#1D4A99
RGB	rgb(29, 74, 153)
HSL	hsl(218, 68%, 36%)
HSV	hsv(218, 81%, 60%)
CMYK	cmyk(81%, 51.6%, 0%, 40%)
CIE-LAB	lab(32.83, 14.90, -47.55)
CIE-LCH	lch(32.83, 49.83, 287.40°)
OKLab	oklab(42.59% -0.0223 -0.1369)
OKLCH	oklch(42.59% 0.139 260.8)
XYZ	xyz(8.7032, 7.4576, 31.1116)
Luminance	0.0746 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4A99 #996C1D

analogous

#1D8899 #1D4A99 #2E1D99

triadic

#1D4A99 #991D4A #4A991D

tetradic

#1D4A99 #991D88 #996C1D #1D992E

square

#1D4A99 #991D88 #996C1D #1D992E

split-complementary

#1D4A99 #992E1D #88991D

monochromatic

#091832 #133166 #1D4A99 #2763CC #5285DE

Accessibility & contrast

On white

8.43

#1D4A99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#1D4A99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4A99

8.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4A99	#FFFFFF	#000000	##FFFFFF
##1D4A99	1.00	8.43	2.49	8.43
#FFFFFF	8.43	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17539C

Deuteranopia (green-blind)

#004897

Tritanopia (blue-blind)

#005D6A

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1d4a99;
/* rgb */ color: rgb(29, 74, 153);
/* oklch */ color: oklch(42.6% 0.139 260.8);

Tailwind

colors: {
  custom: {
    50: '#6e7bb8',
    500: '#1d4a99',
    950: '#000000',
  },
}

SCSS

$custom: #1d4a99;
$custom-light: #6e7bb8;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4a99",
  "rgb": {
    "r": 29,
    "g": 74,
    "b": 153
  },
  "hsl": {
    "h": 218.226,
    "s": 68.132,
    "l": 35.686
  },
  "oklch": {
    "l": 0.42586,
    "c": 0.13869,
    "h": 260.8
  },
  "luminance": 0.07459
}

Semantic roles & 50–950 ramp

primary

#1D4A99

secondary

#C19851

accent

#AC3DEB

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #1D4A99

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

Preview Lab → · Contrast checker → · Palette generator →