#1D399A#1D399A

#1D399A is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.1% C 0.162 H 266.3°. Best body text is #FFFFFF at 9.98:1 contrast (WCAG AA passes).

Color values

HEX	#1D399A
RGB	rgb(29, 57, 154)
HSL	hsl(227, 68%, 36%)
HSV	hsv(227, 81%, 60%)
CMYK	cmyk(81.2%, 63%, 0%, 39.6%)
CIE-LAB	lab(28.17, 26.91, -55.73)
CIE-LCH	lch(28.17, 61.89, 295.78°)
OKLab	oklab(39.1% -0.0105 -0.1612)
OKLCH	oklch(39.1% 0.162 266.3)
XYZ	xyz(7.8005, 5.5196, 31.2199)
Luminance	0.0552 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D399A #9A7E1D

analogous

#1D779A #1D399A #3F1D9A

triadic

#1D399A #9A1D39 #399A1D

tetradic

#1D399A #9A1D77 #9A7E1D #1D9A3F

square

#1D399A #9A1D77 #9A7E1D #1D9A3F

split-complementary

#1D399A #9A3F1D #779A1D

monochromatic

#0A1333 #132666 #1D399A #274CCE #5372DF

Accessibility & contrast

On white

9.98

#1D399A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#1D399A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D399A

9.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D399A	#FFFFFF	#000000	##FFFFFF
##1D399A	1.00	9.98	2.10	9.98
#FFFFFF	9.98	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	9.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00489D

Deuteranopia (green-blind)

#003D98

Tritanopia (blue-blind)

#005264

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1d399a;
/* rgb */ color: rgb(29, 57, 154);
/* oklch */ color: oklch(39.1% 0.162 266.3);

Tailwind

colors: {
  custom: {
    50: '#6f6fb9',
    500: '#1d399a',
    950: '#000000',
  },
}

SCSS

$custom: #1d399a;
$custom-light: #6f6fb9;
$custom-dark: #000000;

JSON

{
  "hex": "#1d399a",
  "rgb": {
    "r": 29,
    "g": 57,
    "b": 154
  },
  "hsl": {
    "h": 226.56,
    "s": 68.306,
    "l": 35.882
  },
  "oklch": {
    "l": 0.391,
    "c": 0.16158,
    "h": 266.3
  },
  "luminance": 0.05521
}

Semantic roles & 50–950 ramp

primary

#1D399A

secondary

#C2A851

accent

#C43DEB

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #1D399A

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

Preview Lab → · Contrast checker → · Palette generator →