#101571#101571

#101571 is a dark, vivid blue. Relative luminance 0.018; OKLCH L 27.8% C 0.152 H 269.2°. Best body text is #FFFFFF at 15.35:1 contrast (WCAG AA passes).

Color values

HEX	#101571
RGB	rgb(16, 21, 113)
HSL	hsl(237, 75%, 25%)
HSV	hsv(237, 86%, 44%)
CMYK	cmyk(85.8%, 81.4%, 0%, 55.7%)
CIE-LAB	lab(14.61, 33.77, -52.30)
CIE-LCH	lch(14.61, 62.25, 302.86°)
OKLab	oklab(27.83% -0.0022 -0.1515)
OKLCH	oklch(27.83% 0.152 269.2)
XYZ	xyz(3.4615, 1.8383, 15.7920)
Luminance	0.0184 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101571 #716C10

analogous

#104671 #101571 #3B1071

triadic

#101571 #711015 #157110

tetradic

#101571 #711046 #716C10 #10713B

square

#101571 #711046 #716C10 #10713B

split-complementary

#101571 #713B10 #467110

monochromatic

#04051B #080B3B #101571 #181FA7 #1F29DC

Accessibility & contrast

On white

15.35

#101571 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#101571 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101571

15.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101571	#FFFFFF	#000000	##FFFFFF
##101571	1.00	15.35	1.37	15.35
#FFFFFF	15.35	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A74

Deuteranopia (green-blind)

#00206F

Tritanopia (blue-blind)

#003143

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #101571;
/* rgb */ color: rgb(16, 21, 113);
/* oklch */ color: oklch(27.8% 0.152 269.2);

Tailwind

colors: {
  custom: {
    50: '#64549b',
    500: '#101571',
    950: '#000000',
  },
}

SCSS

$custom: #101571;
$custom-light: #64549b;
$custom-dark: #000000;

JSON

{
  "hex": "#101571",
  "rgb": {
    "r": 16,
    "g": 21,
    "b": 113
  },
  "hsl": {
    "h": 236.907,
    "s": 75.194,
    "l": 25.294
  },
  "oklch": {
    "l": 0.27829,
    "c": 0.15152,
    "h": 269.2
  },
  "luminance": 0.01839
}

Semantic roles & 50–950 ramp

primary

#101571

secondary

#A9A334

accent

#E836F2

background

#F6F4F9

surface

#EBE7F2

border

#C6C3CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #101571

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

Preview Lab → · Contrast checker → · Palette generator →