#1D1578#1D1578

#1D1578 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.5% C 0.157 H 274.5°. Best body text is #FFFFFF at 14.68:1 contrast (WCAG AA passes).

Color values

HEX	#1D1578
RGB	rgb(29, 21, 120)
HSL	hsl(245, 70%, 28%)
HSV	hsv(245, 83%, 47%)
CMYK	cmyk(75.8%, 82.5%, 0%, 52.9%)
CIE-LAB	lab(16.27, 37.16, -54.05)
CIE-LCH	lch(16.27, 65.59, 304.51°)
OKLab	oklab(29.45% 0.0123 -0.1563)
OKLCH	oklch(29.45% 0.157 274.5)
XYZ	xyz(4.1639, 2.1532, 17.9618)
Luminance	0.0215 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D1578 #707815

analogous

#153F78 #1D1578 #4E1578

triadic

#1D1578 #781D15 #15781D

tetradic

#1D1578 #78153F #707815 #15784E

square

#1D1578 #78153F #707815 #15784E

split-complementary

#1D1578 #784E15 #3F7815

monochromatic

#06051A #100C44 #1D1578 #2A1EAC #3B2DDA

Accessibility & contrast

On white

14.68

#1D1578 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#1D1578 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D1578

14.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D1578	#FFFFFF	#000000	##FFFFFF
##1D1578	1.00	14.68	1.43	14.68
#FFFFFF	14.68	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D7B

Deuteranopia (green-blind)

#002476

Tritanopia (blue-blind)

#003447

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #1d1578;
/* rgb */ color: rgb(29, 21, 120);
/* oklch */ color: oklch(29.5% 0.157 274.5);

Tailwind

colors: {
  custom: {
    50: '#6a55a0',
    500: '#1d1578',
    950: '#000000',
  },
}

SCSS

$custom: #1d1578;
$custom-light: #6a55a0;
$custom-dark: #000000;

JSON

{
  "hex": "#1d1578",
  "rgb": {
    "r": 29,
    "g": 21,
    "b": 120
  },
  "hsl": {
    "h": 244.848,
    "s": 70.213,
    "l": 27.647
  },
  "oklch": {
    "l": 0.29454,
    "c": 0.1568,
    "h": 274.5
  },
  "luminance": 0.02154
}

Semantic roles & 50–950 ramp

primary

#1D1578

secondary

#A4AE3B

accent

#ED3BDF

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#08030F

muted

#7A787F

Preview Lab

Preview with #1D1578

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

Preview Lab → · Contrast checker → · Palette generator →