#1D176B#1D176B

#1D176B is a dark, vivid blue. Relative luminance 0.019; OKLCH L 28.2% C 0.138 H 276.0°. Best body text is #FFFFFF at 15.14:1 contrast (WCAG AA passes).

Color values

HEX	#1D176B
RGB	rgb(29, 23, 107)
HSL	hsl(244, 65%, 25%)
HSV	hsv(244, 79%, 42%)
CMYK	cmyk(72.9%, 78.5%, 0%, 58%)
CIE-LAB	lab(15.14, 31.57, -47.48)
CIE-LCH	lch(15.14, 57.02, 303.62°)
OKLab	oklab(28.21% 0.0145 -0.1372)
OKLCH	oklch(28.21% 0.138 276)
XYZ	xyz(3.4661, 1.9352, 14.0979)
Luminance	0.0194 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D176B #656B17

analogous

#173B6B #1D176B #47176B

triadic

#1D176B #6B1D17 #176B1D

tetradic

#1D176B #6B173B #656B17 #176B47

square

#1D176B #6B173B #656B17 #176B47

split-complementary

#1D176B #6B4717 #3B6B17

monochromatic

#070519 #0F0C39 #1D176B #2B229D #382DD0

Accessibility & contrast

On white

15.14

#1D176B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#1D176B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D176B

15.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D176B	#FFFFFF	#000000	##FFFFFF
##1D176B	1.00	15.14	1.39	15.14
#FFFFFF	15.14	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A6D

Deuteranopia (green-blind)

#002269

Tritanopia (blue-blind)

#002F40

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #1d176b;
/* rgb */ color: rgb(29, 23, 107);
/* oklch */ color: oklch(28.2% 0.138 276.0);

Tailwind

colors: {
  custom: {
    50: '#665596',
    500: '#1d176b',
    950: '#000000',
  },
}

SCSS

$custom: #1d176b;
$custom-light: #665596;
$custom-dark: #000000;

JSON

{
  "hex": "#1d176b",
  "rgb": {
    "r": 29,
    "g": 23,
    "b": 107
  },
  "hsl": {
    "h": 244.286,
    "s": 64.615,
    "l": 25.49
  },
  "oklch": {
    "l": 0.28212,
    "c": 0.13801,
    "h": 276
  },
  "luminance": 0.01936
}

Semantic roles & 50–950 ramp

primary

#1D176B

secondary

#9AA13D

accent

#E840DC

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030D

muted

#7A787E

Preview Lab

Preview with #1D176B

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

Preview Lab → · Contrast checker → · Palette generator →