#10105B#10105B

#10105B is a very dark, vivid blue. Relative luminance 0.012; OKLCH L 24.4% C 0.128 H 271.8°. Best body text is #FFFFFF at 16.84:1 contrast (WCAG AA passes).

Color values

HEX	#10105B
RGB	rgb(16, 16, 91)
HSL	hsl(240, 70%, 21%)
HSV	hsv(240, 82%, 36%)
CMYK	cmyk(82.4%, 82.4%, 0%, 64.3%)
CIE-LAB	lab(10.82, 28.74, -44.04)
CIE-LCH	lch(10.82, 52.59, 303.13°)
OKLab	oklab(24.35% 0.0039 -0.1275)
OKLCH	oklch(24.35% 0.128 271.8)
XYZ	xyz(2.2867, 1.2358, 10.0135)
Luminance	0.0124 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10105B #5B5B10

analogous

#10355B #10105B #35105B

triadic

#10105B #5B1010 #105B10

tetradic

#10105B #5B1035 #5B5B10 #105B35

square

#10105B #5B1035 #5B5B10 #105B35

split-complementary

#10105B #5B3510 #355B10

monochromatic

#05051A #070727 #10105B #19198F #2222C3

Accessibility & contrast

On white

16.84

#10105B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#10105B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10105B

16.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10105B	#FFFFFF	#000000	##FFFFFF
##10105B	1.00	16.84	1.25	16.84
#FFFFFF	16.84	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00215D

Deuteranopia (green-blind)

#00195A

Tritanopia (blue-blind)

#002735

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #10105b;
/* rgb */ color: rgb(16, 16, 91);
/* oklch */ color: oklch(24.4% 0.128 271.8);

Tailwind

colors: {
  custom: {
    50: '#5e4f8a',
    500: '#10105b',
    950: '#000000',
  },
}

SCSS

$custom: #10105b;
$custom-light: #5e4f8a;
$custom-dark: #000000;

JSON

{
  "hex": "#10105b",
  "rgb": {
    "r": 16,
    "g": 16,
    "b": 91
  },
  "hsl": {
    "h": 240,
    "s": 70.093,
    "l": 20.98
  },
  "oklch": {
    "l": 0.24352,
    "c": 0.12754,
    "h": 271.8
  },
  "luminance": 0.01236
}

Semantic roles & 50–950 ramp

primary

#10105B

secondary

#949433

accent

#ED3BED

background

#F5F4F8

surface

#EAE7F0

border

#C6C3CB

text

#05020C

muted

#79787D

Preview Lab

Preview with #10105B

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

Preview Lab → · Contrast checker → · Palette generator →