#1D177D#1D177D

#1D177D is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.3% C 0.161 H 273.6°. Best body text is #FFFFFF at 14.28:1 contrast (WCAG AA passes).

Color values

HEX	#1D177D
RGB	rgb(29, 23, 125)
HSL	hsl(244, 69%, 29%)
HSV	hsv(244, 82%, 49%)
CMYK	cmyk(76.8%, 81.6%, 0%, 51%)
CIE-LAB	lab(17.25, 37.76, -55.63)
CIE-LCH	lch(17.25, 67.24, 304.17°)
OKLab	oklab(30.31% 0.0102 -0.1609)
OKLCH	oklch(30.31% 0.161 273.6)
XYZ	xyz(4.5135, 2.3542, 19.6146)
Luminance	0.0236 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D177D #777D17

analogous

#17447D #1D177D #50177D

triadic

#1D177D #7D1D17 #177D1D

tetradic

#1D177D #7D1744 #777D17 #177D50

square

#1D177D #7D1744 #777D17 #177D50

split-complementary

#1D177D #7D5017 #447D17

monochromatic

#06051A #110D49 #1D177D #2921B1 #3E35DA

Accessibility & contrast

On white

14.28

#1D177D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#1D177D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D177D

14.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D177D	#FFFFFF	#000000	##FFFFFF
##1D177D	1.00	14.28	1.47	14.28
#FFFFFF	14.28	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F80

Deuteranopia (green-blind)

#00257B

Tritanopia (blue-blind)

#00364A

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #1d177d;
/* rgb */ color: rgb(29, 23, 125);
/* oklch */ color: oklch(30.3% 0.161 273.6);

Tailwind

colors: {
  custom: {
    50: '#6b57a4',
    500: '#1d177d',
    950: '#000000',
  },
}

SCSS

$custom: #1d177d;
$custom-light: #6b57a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1d177d",
  "rgb": {
    "r": 29,
    "g": 23,
    "b": 125
  },
  "hsl": {
    "h": 243.529,
    "s": 68.919,
    "l": 29.02
  },
  "oklch": {
    "l": 0.3031,
    "c": 0.16127,
    "h": 273.6
  },
  "luminance": 0.02355
}

Semantic roles & 50–950 ramp

primary

#1D177D

secondary

#ABB23E

accent

#EC3CE1

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #1D177D

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

Preview Lab → · Contrast checker → · Palette generator →