#1A1571#1A1571

#1A1571 is a dark, vivid blue. Relative luminance 0.019; OKLCH L 28.4% C 0.149 H 273.8°. Best body text is #FFFFFF at 15.11:1 contrast (WCAG AA passes).

Color values

HEX	#1A1571
RGB	rgb(26, 21, 113)
HSL	hsl(243, 69%, 26%)
HSV	hsv(243, 81%, 44%)
CMYK	cmyk(77%, 81.4%, 0%, 55.7%)
CIE-LAB	lab(15.21, 34.53, -51.29)
CIE-LCH	lch(15.21, 61.83, 303.95°)
OKLab	oklab(28.41% 0.0099 -0.1484)
OKLCH	oklch(28.41% 0.149 273.8)
XYZ	xyz(3.6738, 1.9478, 15.8019)
Luminance	0.0195 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A1571 #6C7115

analogous

#153E71 #1A1571 #481571

triadic

#1A1571 #711A15 #15711A

tetradic

#1A1571 #71153E #6C7115 #157148

square

#1A1571 #71153E #6C7115 #157148

split-complementary

#1A1571 #714815 #3E7115

monochromatic

#06051A #0E0B3D #1A1571 #261FA5 #3329D7

Accessibility & contrast

On white

15.11

#1A1571 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#1A1571 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A1571

15.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A1571	#FFFFFF	#000000	##FFFFFF
##1A1571	1.00	15.11	1.39	15.11
#FFFFFF	15.11	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A74

Deuteranopia (green-blind)

#00226F

Tritanopia (blue-blind)

#003143

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #1a1571;
/* rgb */ color: rgb(26, 21, 113);
/* oklch */ color: oklch(28.4% 0.149 273.8);

Tailwind

colors: {
  custom: {
    50: '#67549b',
    500: '#1a1571',
    950: '#000000',
  },
}

SCSS

$custom: #1a1571;
$custom-light: #67549b;
$custom-dark: #000000;

JSON

{
  "hex": "#1a1571",
  "rgb": {
    "r": 26,
    "g": 21,
    "b": 113
  },
  "hsl": {
    "h": 243.261,
    "s": 68.657,
    "l": 26.275
  },
  "oklch": {
    "l": 0.28408,
    "c": 0.14871,
    "h": 273.8
  },
  "luminance": 0.01948
}

Semantic roles & 50–950 ramp

primary

#1A1571

secondary

#A1A73B

accent

#EB3CE2

background

#F6F5F9

surface

#EBE8F2

border

#C6C4CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1A1571

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

Preview Lab → · Contrast checker → · Palette generator →