#1D1571#1D1571

#1D1571 is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.6% C 0.148 H 275.5°. Best body text is #FFFFFF at 15.02:1 contrast (WCAG AA passes).

Color values

HEX	#1D1571
RGB	rgb(29, 21, 113)
HSL	hsl(245, 69%, 26%)
HSV	hsv(245, 81%, 44%)
CMYK	cmyk(74.3%, 81.4%, 0%, 55.7%)
CIE-LAB	lab(15.43, 34.80, -50.92)
CIE-LCH	lch(15.43, 61.68, 304.35°)
OKLab	oklab(28.62% 0.0141 -0.1472)
OKLCH	oklch(28.62% 0.148 275.5)
XYZ	xyz(3.7545, 1.9894, 15.8057)
Luminance	0.0199 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D1571 #697115

analogous

#153B71 #1D1571 #4B1571

triadic

#1D1571 #711D15 #15711D

tetradic

#1D1571 #71153B #697115 #15714B

square

#1D1571 #71153B #697115 #15714B

split-complementary

#1D1571 #714B15 #3B7115

monochromatic

#07051A #100B3D #1D1571 #2A1FA5 #3829D7

Accessibility & contrast

On white

15.02

#1D1571 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.40

#1D1571 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D1571

15.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D1571	#FFFFFF	#000000	##FFFFFF
##1D1571	1.00	15.02	1.40	15.02
#FFFFFF	15.02	1.00	21.00	1.00
#000000	1.40	21.00	1.00	21.00
##FFFFFF	15.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B74

Deuteranopia (green-blind)

#00226F

Tritanopia (blue-blind)

#003143

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #1d1571;
/* rgb */ color: rgb(29, 21, 113);
/* oklch */ color: oklch(28.6% 0.148 275.5);

Tailwind

colors: {
  custom: {
    50: '#68559b',
    500: '#1d1571',
    950: '#000000',
  },
}

SCSS

$custom: #1d1571;
$custom-light: #68559b;
$custom-dark: #000000;

JSON

{
  "hex": "#1d1571",
  "rgb": {
    "r": 29,
    "g": 21,
    "b": 113
  },
  "hsl": {
    "h": 245.217,
    "s": 68.657,
    "l": 26.275
  },
  "oklch": {
    "l": 0.28621,
    "c": 0.1479,
    "h": 275.5
  },
  "luminance": 0.0199
}

Semantic roles & 50–950 ramp

primary

#1D1571

secondary

#9EA73B

accent

#EB3CDC

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1D1571

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

Preview Lab → · Contrast checker → · Palette generator →