#1D17A0#1D17A0

#1D17A0 is a dark, highly saturated blue. Relative luminance 0.034; OKLCH L 34.6% C 0.203 H 270.4°. Best body text is #FFFFFF at 12.48:1 contrast (WCAG AA passes).

Color values

HEX	#1D17A0
RGB	rgb(29, 23, 160)
HSL	hsl(243, 75%, 36%)
HSV	hsv(243, 86%, 63%)
CMYK	cmyk(81.9%, 85.6%, 0%, 37.3%)
CIE-LAB	lab(21.62, 48.97, -70.20)
CIE-LCH	lch(21.62, 85.59, 304.90°)
OKLab	oklab(34.6% 0.0015 -0.2031)
OKLCH	oklch(34.6% 0.203 270.4)
XYZ	xyz(7.1561, 3.4112, 33.5322)
Luminance	0.0341 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D17A0 #9AA017

analogous

#1755A0 #1D17A0 #6117A0

triadic

#1D17A0 #A01D17 #17A01D

tetradic

#1D17A0 #A01755 #9AA017 #17A061

square

#1D17A0 #A01755 #9AA017 #17A061

split-complementary

#1D17A0 #A06117 #55A017

monochromatic

#0A0835 #130F6A #1D17A0 #271FD6 #534CE5

Accessibility & contrast

On white

12.48

#1D17A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1D17A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D17A0

12.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D17A0	#FFFFFF	#000000	##FFFFFF
##1D17A0	1.00	12.48	1.68	12.48
#FFFFFF	12.48	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003BA4

Deuteranopia (green-blind)

#002D9E

Tritanopia (blue-blind)

#00455E

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1d17a0;
/* rgb */ color: rgb(29, 23, 160);
/* oklch */ color: oklch(34.6% 0.203 270.4);

Tailwind

colors: {
  custom: {
    50: '#7459be',
    500: '#1d17a0',
    950: '#000000',
  },
}

SCSS

$custom: #1d17a0;
$custom-light: #7459be;
$custom-dark: #000000;

JSON

{
  "hex": "#1d17a0",
  "rgb": {
    "r": 29,
    "g": 23,
    "b": 160
  },
  "hsl": {
    "h": 242.628,
    "s": 74.863,
    "l": 35.882
  },
  "oklch": {
    "l": 0.34598,
    "c": 0.20313,
    "h": 270.4
  },
  "luminance": 0.03412
}

Semantic roles & 50–950 ramp

primary

#1D17A0

secondary

#C2C74C

accent

#F136E9

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #1D17A0

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

Preview Lab → · Contrast checker → · Palette generator →