#1D318C#1D318C

#1D318C is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.2% C 0.152 H 268.0°. Best body text is #FFFFFF at 11.23:1 contrast (WCAG AA passes).

Color values

HEX	#1D318C
RGB	rgb(29, 49, 140)
HSL	hsl(229, 66%, 33%)
HSV	hsv(229, 79%, 55%)
CMYK	cmyk(79.3%, 65%, 0%, 45.1%)
CIE-LAB	lab(24.80, 26.89, -52.63)
CIE-LCH	lch(24.80, 59.10, 297.06°)
OKLab	oklab(36.22% -0.0054 -0.1522)
OKLCH	oklch(36.22% 0.152 268)
XYZ	xyz(6.3370, 4.3506, 25.3116)
Luminance	0.0435 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D318C #8C781D

analogous

#1D688C #1D318C #401D8C

triadic

#1D318C #8C1D31 #318C1D

tetradic

#1D318C #8C1D68 #8C781D #1D8C40

square

#1D318C #8C1D68 #8C781D #1D8C40

split-complementary

#1D318C #8C401D #688C1D

monochromatic

#080E27 #121F59 #1D318C #2843BF #4A64D9

Accessibility & contrast

On white

11.23

#1D318C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#1D318C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D318C

11.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D318C	#FFFFFF	#000000	##FFFFFF
##1D318C	1.00	11.23	1.87	11.23
#FFFFFF	11.23	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00408F

Deuteranopia (green-blind)

#00368A

Tritanopia (blue-blind)

#004959

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1d318c;
/* rgb */ color: rgb(29, 49, 140);
/* oklch */ color: oklch(36.2% 0.152 268.0);

Tailwind

colors: {
  custom: {
    50: '#6c69ae',
    500: '#1d318c',
    950: '#000000',
  },
}

SCSS

$custom: #1d318c;
$custom-light: #6c69ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1d318c",
  "rgb": {
    "r": 29,
    "g": 49,
    "b": 140
  },
  "hsl": {
    "h": 229.189,
    "s": 65.68,
    "l": 33.137
  },
  "oklch": {
    "l": 0.36218,
    "c": 0.15234,
    "h": 268
  },
  "luminance": 0.04351
}

Semantic roles & 50–950 ramp

primary

#1D318C

secondary

#BCA749

accent

#CA3FE9

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1D318C

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

Preview Lab → · Contrast checker → · Palette generator →