#101555#101555

#101555 is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 24.5% C 0.113 H 271.2°. Best body text is #FFFFFF at 16.66:1 contrast (WCAG AA passes).

Color values

HEX	#101555
RGB	rgb(16, 21, 85)
HSL	hsl(236, 68%, 20%)
HSV	hsv(236, 81%, 33%)
CMYK	cmyk(81.2%, 75.3%, 0%, 66.7%)
CIE-LAB	lab(11.29, 23.14, -39.20)
CIE-LCH	lch(11.29, 45.52, 300.55°)
OKLab	oklab(24.48% 0.0024 -0.1134)
OKLCH	oklch(24.48% 0.113 271.2)
XYZ	xyz(2.1210, 1.3021, 8.7321)
Luminance	0.0130 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101555 #555010

analogous

#103855 #101555 #2D1055

triadic

#101555 #551015 #155510

tetradic

#101555 #551038 #555010 #10552D

square

#101555 #551038 #555010 #10552D

split-complementary

#101555 #552D10 #385510

monochromatic

#05061A #060821 #101555 #1A2289 #232EBC

Accessibility & contrast

On white

16.66

#101555 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#101555 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101555

16.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101555	#FFFFFF	#000000	##FFFFFF
##101555	1.00	16.66	1.26	16.66
#FFFFFF	16.66	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002157

Deuteranopia (green-blind)

#001B54

Tritanopia (blue-blind)

#002733

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #101555;
/* rgb */ color: rgb(16, 21, 85);
/* oklch */ color: oklch(24.5% 0.113 271.2);

Tailwind

colors: {
  custom: {
    50: '#5b5286',
    500: '#101555',
    950: '#000000',
  },
}

SCSS

$custom: #101555;
$custom-light: #5b5286;
$custom-dark: #000000;

JSON

{
  "hex": "#101555",
  "rgb": {
    "r": 16,
    "g": 21,
    "b": 85
  },
  "hsl": {
    "h": 235.652,
    "s": 68.317,
    "l": 19.804
  },
  "oklch": {
    "l": 0.24478,
    "c": 0.11345,
    "h": 271.2
  },
  "luminance": 0.01302
}

Semantic roles & 50–950 ramp

primary

#101555

secondary

#8F8832

accent

#DF3DEB

background

#F5F4F8

surface

#E9E7EF

border

#C5C3CA

text

#05020B

muted

#79787C

Preview Lab

Preview with #101555

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

Preview Lab → · Contrast checker → · Palette generator →