#1D379A#1D379A

#1D379A is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.7% C 0.164 H 266.7°. Best body text is #FFFFFF at 10.17:1 contrast (WCAG AA passes).

Color values

HEX	#1D379A
RGB	rgb(29, 55, 154)
HSL	hsl(228, 68%, 36%)
HSV	hsv(228, 81%, 60%)
CMYK	cmyk(81.2%, 64.3%, 0%, 39.6%)
CIE-LAB	lab(27.64, 28.26, -56.59)
CIE-LCH	lch(27.64, 63.26, 296.54°)
OKLab	oklab(38.71% -0.0093 -0.1638)
OKLCH	oklch(38.71% 0.164 266.7)
XYZ	xyz(7.7036, 5.3258, 31.1876)
Luminance	0.0533 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D379A #9A801D

analogous

#1D759A #1D379A #411D9A

triadic

#1D379A #9A1D37 #379A1D

tetradic

#1D379A #9A1D75 #9A801D #1D9A41

square

#1D379A #9A1D75 #9A801D #1D9A41

split-complementary

#1D379A #9A411D #759A1D

monochromatic

#0A1233 #132566 #1D379A #2749CE #5370DF

Accessibility & contrast

On white

10.17

#1D379A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#1D379A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D379A

10.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D379A	#FFFFFF	#000000	##FFFFFF
##1D379A	1.00	10.17	2.07	10.17
#FFFFFF	10.17	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00479D

Deuteranopia (green-blind)

#003B98

Tritanopia (blue-blind)

#005163

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1d379a;
/* rgb */ color: rgb(29, 55, 154);
/* oklch */ color: oklch(38.7% 0.164 266.7);

Tailwind

colors: {
  custom: {
    50: '#706db9',
    500: '#1d379a',
    950: '#000000',
  },
}

SCSS

$custom: #1d379a;
$custom-light: #706db9;
$custom-dark: #000000;

JSON

{
  "hex": "#1d379a",
  "rgb": {
    "r": 29,
    "g": 55,
    "b": 154
  },
  "hsl": {
    "h": 227.52,
    "s": 68.306,
    "l": 35.882
  },
  "oklch": {
    "l": 0.38713,
    "c": 0.16403,
    "h": 266.7
  },
  "luminance": 0.05327
}

Semantic roles & 50–950 ramp

primary

#1D379A

secondary

#C2AA51

accent

#C73DEB

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1D379A

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

Preview Lab → · Contrast checker → · Palette generator →