#101155#101155

#101155 is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.8% C 0.118 H 272.3°. Best body text is #FFFFFF at 17.03:1 contrast (WCAG AA passes).

Color values

HEX	#101155
RGB	rgb(16, 17, 85)
HSL	hsl(239, 68%, 20%)
HSV	hsv(239, 81%, 33%)
CMYK	cmyk(81.2%, 80%, 0%, 66.7%)
CIE-LAB	lab(10.31, 25.85, -40.81)
CIE-LCH	lch(10.31, 48.31, 302.35°)
OKLab	oklab(23.78% 0.0047 -0.1181)
OKLCH	oklch(23.78% 0.118 272.3)
XYZ	xyz(2.0533, 1.1667, 8.7096)
Luminance	0.0117 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101155 #555410

analogous

#103455 #101155 #311055

triadic

#101155 #551011 #115510

tetradic

#101155 #551034 #555410 #105531

square

#101155 #551034 #555410 #105531

split-complementary

#101155 #553110 #345510

monochromatic

#05051A #060721 #101155 #1A1B89 #2326BC

Accessibility & contrast

On white

17.03

#101155 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#101155 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101155

17.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101155	#FFFFFF	#000000	##FFFFFF
##101155	1.00	17.03	1.23	17.03
#FFFFFF	17.03	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001F57

Deuteranopia (green-blind)

#001954

Tritanopia (blue-blind)

#002532

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #101155;
/* rgb */ color: rgb(16, 17, 85);
/* oklch */ color: oklch(23.8% 0.118 272.3);

Tailwind

colors: {
  custom: {
    50: '#5c5086',
    500: '#101155',
    950: '#000000',
  },
}

SCSS

$custom: #101155;
$custom-light: #5c5086;
$custom-dark: #000000;

JSON

{
  "hex": "#101155",
  "rgb": {
    "r": 16,
    "g": 17,
    "b": 85
  },
  "hsl": {
    "h": 239.13,
    "s": 68.317,
    "l": 19.804
  },
  "oklch": {
    "l": 0.23775,
    "c": 0.11821,
    "h": 272.3
  },
  "luminance": 0.01167
}

Semantic roles & 50–950 ramp

primary

#101155

secondary

#8F8D32

accent

#E93DEB

background

#F5F4F8

surface

#E9E7EF

border

#C5C3CA

text

#05020B

muted

#79787C

Preview Lab

Preview with #101155

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

Preview Lab → · Contrast checker → · Palette generator →