#101558#101558

#101558 is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.8% C 0.118 H 271.0°. Best body text is #FFFFFF at 16.53:1 contrast (WCAG AA passes).

Color values

HEX	#101558
RGB	rgb(16, 21, 88)
HSL	hsl(236, 69%, 20%)
HSV	hsv(236, 82%, 35%)
CMYK	cmyk(81.8%, 76.1%, 0%, 65.5%)
CIE-LAB	lab(11.63, 24.33, -40.68)
CIE-LCH	lch(11.63, 47.40, 300.89°)
OKLab	oklab(24.82% 0.002 -0.1177)
OKLCH	oklch(24.82% 0.118 271)
XYZ	xyz(2.2427, 1.3508, 9.3732)
Luminance	0.0135 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101558 #585310

analogous

#103958 #101558 #2F1058

triadic

#101558 #581015 #155810

tetradic

#101558 #581039 #585310 #10582F

square

#101558 #581039 #585310 #10582F

split-complementary

#101558 #582F10 #395810

monochromatic

#05061A #070924 #101558 #19218C #232EC0

Accessibility & contrast

On white

16.53

#101558 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#101558 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101558

16.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101558	#FFFFFF	#000000	##FFFFFF
##101558	1.00	16.53	1.27	16.53
#FFFFFF	16.53	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00225A

Deuteranopia (green-blind)

#001B57

Tritanopia (blue-blind)

#002834

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #101558;
/* rgb */ color: rgb(16, 21, 88);
/* oklch */ color: oklch(24.8% 0.118 271.0);

Tailwind

colors: {
  custom: {
    50: '#5c5288',
    500: '#101558',
    950: '#000000',
  },
}

SCSS

$custom: #101558;
$custom-light: #5c5288;
$custom-dark: #000000;

JSON

{
  "hex": "#101558",
  "rgb": {
    "r": 16,
    "g": 21,
    "b": 88
  },
  "hsl": {
    "h": 235.833,
    "s": 69.231,
    "l": 20.392
  },
  "oklch": {
    "l": 0.24821,
    "c": 0.11776,
    "h": 271
  },
  "luminance": 0.01351
}

Semantic roles & 50–950 ramp

primary

#101558

secondary

#918B32

accent

#E03CEC

background

#F5F4F8

surface

#E9E7F0

border

#C5C3CB

text

#05020B

muted

#79787C

Preview Lab

Preview with #101558

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

Preview Lab → · Contrast checker → · Palette generator →