#1D399C#1D399C

#1D399C is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.3% C 0.164 H 266.3°. Best body text is #FFFFFF at 9.92:1 contrast (WCAG AA passes).

Color values

HEX	#1D399C
RGB	rgb(29, 57, 156)
HSL	hsl(227, 69%, 36%)
HSV	hsv(227, 81%, 61%)
CMYK	cmyk(81.4%, 63.5%, 0%, 38.8%)
CIE-LAB	lab(28.35, 27.69, -56.66)
CIE-LCH	lch(28.35, 63.06, 296.05°)
OKLab	oklab(39.29% -0.0105 -0.164)
OKLCH	oklch(39.29% 0.164 266.3)
XYZ	xyz(7.9685, 5.5868, 32.1044)
Luminance	0.0559 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D399C #9C801D

analogous

#1D799C #1D399C #411D9C

triadic

#1D399C #9C1D39 #399C1D

tetradic

#1D399C #9C1D79 #9C801D #1D9C41

square

#1D399C #9C1D79 #9C801D #1D9C41

split-complementary

#1D399C #9C411D #799C1D

monochromatic

#0A1335 #132668 #1D399C #274CD0 #5473DF

Accessibility & contrast

On white

9.92

#1D399C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#1D399C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D399C

9.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D399C	#FFFFFF	#000000	##FFFFFF
##1D399C	1.00	9.92	2.12	9.92
#FFFFFF	9.92	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00499F

Deuteranopia (green-blind)

#003D9A

Tritanopia (blue-blind)

#005365

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1d399c;
/* rgb */ color: rgb(29, 57, 156);
/* oklch */ color: oklch(39.3% 0.164 266.3);

Tailwind

colors: {
  custom: {
    50: '#706fba',
    500: '#1d399c',
    950: '#000000',
  },
}

SCSS

$custom: #1d399c;
$custom-light: #706fba;
$custom-dark: #000000;

JSON

{
  "hex": "#1d399c",
  "rgb": {
    "r": 29,
    "g": 57,
    "b": 156
  },
  "hsl": {
    "h": 226.772,
    "s": 68.649,
    "l": 36.275
  },
  "oklch": {
    "l": 0.39287,
    "c": 0.16429,
    "h": 266.3
  },
  "luminance": 0.05588
}

Semantic roles & 50–950 ramp

primary

#1D399C

secondary

#C2AA52

accent

#C53CEB

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1D399C

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

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