#1D399D#1D399D

#1D399D is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.4% C 0.166 H 266.4°. Best body text is #FFFFFF at 9.89:1 contrast (WCAG AA passes).

Color values

HEX	#1D399D
RGB	rgb(29, 57, 157)
HSL	hsl(227, 69%, 36%)
HSV	hsv(227, 82%, 62%)
CMYK	cmyk(81.5%, 63.7%, 0%, 38.4%)
CIE-LAB	lab(28.43, 28.08, -57.12)
CIE-LCH	lch(28.43, 63.65, 296.18°)
OKLab	oklab(39.38% -0.0105 -0.1653)
OKLCH	oklch(39.38% 0.166 266.4)
XYZ	xyz(8.0535, 5.6208, 32.5522)
Luminance	0.0562 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D399D #9D811D

analogous

#1D799D #1D399D #411D9D

triadic

#1D399D #9D1D39 #399D1D

tetradic

#1D399D #9D1D79 #9D811D #1D9D41

square

#1D399D #9D1D79 #9D811D #1D9D41

split-complementary

#1D399D #9D411D #799D1D

monochromatic

#0A1336 #132669 #1D399D #274CD1 #5573E0

Accessibility & contrast

On white

9.89

#1D399D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#1D399D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D399D

9.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D399D	#FFFFFF	#000000	##FFFFFF
##1D399D	1.00	9.89	2.12	9.89
#FFFFFF	9.89	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049A0

Deuteranopia (green-blind)

#003D9B

Tritanopia (blue-blind)

#005365

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1d399d;
/* rgb */ color: rgb(29, 57, 157);
/* oklch */ color: oklch(39.4% 0.166 266.4);

Tailwind

colors: {
  custom: {
    50: '#706fbb',
    500: '#1d399d',
    950: '#000000',
  },
}

SCSS

$custom: #1d399d;
$custom-light: #706fbb;
$custom-dark: #000000;

JSON

{
  "hex": "#1d399d",
  "rgb": {
    "r": 29,
    "g": 57,
    "b": 157
  },
  "hsl": {
    "h": 226.875,
    "s": 68.817,
    "l": 36.471
  },
  "oklch": {
    "l": 0.39381,
    "c": 0.16563,
    "h": 266.4
  },
  "luminance": 0.05622
}

Semantic roles & 50–950 ramp

primary

#1D399D

secondary

#C3AA53

accent

#C53CEC

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1D399D

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

Preview Lab → · Contrast checker → · Palette generator →