#1D4F99#1D4F99

#1D4F99 is a dark, vivid blue. Relative luminance 0.082; OKLCH L 43.7% C 0.132 H 258.6°. Best body text is #FFFFFF at 7.98:1 contrast (WCAG AA passes).

Color values

HEX	#1D4F99
RGB	rgb(29, 79, 153)
HSL	hsl(216, 68%, 36%)
HSV	hsv(216, 81%, 60%)
CMYK	cmyk(81%, 48.4%, 0%, 40%)
CIE-LAB	lab(34.30, 11.52, -45.17)
CIE-LCH	lch(34.30, 46.62, 284.31°)
OKLab	oklab(43.71% -0.0263 -0.1298)
OKLCH	oklch(43.71% 0.132 258.6)
XYZ	xyz(9.0503, 8.1520, 31.2273)
Luminance	0.0815 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4F99 #99671D

analogous

#1D8D99 #1D4F99 #291D99

triadic

#1D4F99 #991D4F #4F991D

tetradic

#1D4F99 #991D8D #99671D #1D9929

square

#1D4F99 #991D8D #99671D #1D9929

split-complementary

#1D4F99 #99291D #8D991D

monochromatic

#091A32 #133466 #1D4F99 #276ACC #528BDE

Accessibility & contrast

On white

7.98

#1D4F99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#1D4F99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4F99

7.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4F99	#FFFFFF	#000000	##FFFFFF
##1D4F99	1.00	7.98	2.63	7.98
#FFFFFF	7.98	1.00	21.00	1.00
#000000	2.63	21.00	1.00	21.00
##FFFFFF	7.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#25579C

Deuteranopia (green-blind)

#004B98

Tritanopia (blue-blind)

#00616C

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1d4f99;
/* rgb */ color: rgb(29, 79, 153);
/* oklch */ color: oklch(43.7% 0.132 258.6);

Tailwind

colors: {
  custom: {
    50: '#6e7fb7',
    500: '#1d4f99',
    950: '#000000',
  },
}

SCSS

$custom: #1d4f99;
$custom-light: #6e7fb7;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4f99",
  "rgb": {
    "r": 29,
    "g": 79,
    "b": 153
  },
  "hsl": {
    "h": 215.806,
    "s": 68.132,
    "l": 35.686
  },
  "oklch": {
    "l": 0.43714,
    "c": 0.13243,
    "h": 258.6
  },
  "luminance": 0.08153
}

Semantic roles & 50–950 ramp

primary

#1D4F99

secondary

#C19451

accent

#A53DEB

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080A11

muted

#7B7C80

Preview Lab

Preview with #1D4F99

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

Preview Lab → · Contrast checker → · Palette generator →