#1D379D#1D379D

#1D379D is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.0% C 0.168 H 266.8°. Best body text is #FFFFFF at 10.07:1 contrast (WCAG AA passes).

Color values

HEX	#1D379D
RGB	rgb(29, 55, 157)
HSL	hsl(228, 69%, 36%)
HSV	hsv(228, 82%, 62%)
CMYK	cmyk(81.5%, 65%, 0%, 38.4%)
CIE-LAB	lab(27.92, 29.42, -57.97)
CIE-LCH	lch(27.92, 65.01, 296.91°)
OKLab	oklab(39% -0.0094 -0.1678)
OKLCH	oklch(39% 0.168 266.8)
XYZ	xyz(7.9566, 5.4270, 32.5199)
Luminance	0.0543 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D379D #9D831D

analogous

#1D779D #1D379D #431D9D

triadic

#1D379D #9D1D37 #379D1D

tetradic

#1D379D #9D1D77 #9D831D #1D9D43

square

#1D379D #9D1D77 #9D831D #1D9D43

split-complementary

#1D379D #9D431D #779D1D

monochromatic

#0A1336 #132569 #1D379D #2749D1 #5571E0

Accessibility & contrast

On white

10.07

#1D379D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#1D379D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D379D

10.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D379D	#FFFFFF	#000000	##FFFFFF
##1D379D	1.00	10.07	2.09	10.07
#FFFFFF	10.07	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048A0

Deuteranopia (green-blind)

#003C9B

Tritanopia (blue-blind)

#005265

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1d379d;
/* rgb */ color: rgb(29, 55, 157);
/* oklch */ color: oklch(39.0% 0.168 266.8);

Tailwind

colors: {
  custom: {
    50: '#706dbb',
    500: '#1d379d',
    950: '#000000',
  },
}

SCSS

$custom: #1d379d;
$custom-light: #706dbb;
$custom-dark: #000000;

JSON

{
  "hex": "#1d379d",
  "rgb": {
    "r": 29,
    "g": 55,
    "b": 157
  },
  "hsl": {
    "h": 227.813,
    "s": 68.817,
    "l": 36.471
  },
  "oklch": {
    "l": 0.39,
    "c": 0.16806,
    "h": 266.8
  },
  "luminance": 0.05428
}

Semantic roles & 50–950 ramp

primary

#1D379D

secondary

#C3AC53

accent

#C83CEC

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1D379D

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

Preview Lab → · Contrast checker → · Palette generator →