#1D379C#1D379C

#1D379C is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.9% C 0.167 H 266.8°. Best body text is #FFFFFF at 10.10:1 contrast (WCAG AA passes).

Color values

HEX	#1D379C
RGB	rgb(29, 55, 156)
HSL	hsl(228, 69%, 36%)
HSV	hsv(228, 81%, 61%)
CMYK	cmyk(81.4%, 64.7%, 0%, 38.8%)
CIE-LAB	lab(27.83, 29.04, -57.51)
CIE-LCH	lch(27.83, 64.42, 296.79°)
OKLab	oklab(38.9% -0.0093 -0.1665)
OKLCH	oklch(38.9% 0.167 266.8)
XYZ	xyz(7.8715, 5.3930, 32.0721)
Luminance	0.0539 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D379C #9C821D

analogous

#1D779C #1D379C #431D9C

triadic

#1D379C #9C1D37 #379C1D

tetradic

#1D379C #9C1D77 #9C821D #1D9C43

square

#1D379C #9C1D77 #9C821D #1D9C43

split-complementary

#1D379C #9C431D #779C1D

monochromatic

#0A1335 #132568 #1D379C #2749D0 #5471DF

Accessibility & contrast

On white

10.10

#1D379C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#1D379C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D379C

10.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D379C	#FFFFFF	#000000	##FFFFFF
##1D379C	1.00	10.10	2.08	10.10
#FFFFFF	10.10	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00489F

Deuteranopia (green-blind)

#003C9A

Tritanopia (blue-blind)

#005264

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1d379c;
/* rgb */ color: rgb(29, 55, 156);
/* oklch */ color: oklch(38.9% 0.167 266.8);

Tailwind

colors: {
  custom: {
    50: '#706dba',
    500: '#1d379c',
    950: '#000000',
  },
}

SCSS

$custom: #1d379c;
$custom-light: #706dba;
$custom-dark: #000000;

JSON

{
  "hex": "#1d379c",
  "rgb": {
    "r": 29,
    "g": 55,
    "b": 156
  },
  "hsl": {
    "h": 227.717,
    "s": 68.649,
    "l": 36.275
  },
  "oklch": {
    "l": 0.38904,
    "c": 0.16672,
    "h": 266.8
  },
  "luminance": 0.05394
}

Semantic roles & 50–950 ramp

primary

#1D379C

secondary

#C2AB52

accent

#C83CEB

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1D379C

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

Preview Lab → · Contrast checker → · Palette generator →