#101D59#101D59

#101D59 is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.5% C 0.109 H 268.3°. Best body text is #FFFFFF at 15.65:1 contrast (WCAG AA passes).

Color values

HEX	#101D59
RGB	rgb(16, 29, 89)
HSL	hsl(229, 70%, 21%)
HSV	hsv(229, 82%, 35%)
CMYK	cmyk(82%, 67.4%, 0%, 65.1%)
CIE-LAB	lab(13.88, 19.00, -37.64)
CIE-LCH	lch(13.88, 42.17, 296.78°)
OKLab	oklab(26.5% -0.0032 -0.1088)
OKLCH	oklch(26.5% 0.109 268.3)
XYZ	xyz(2.4556, 1.7099, 9.6499)
Luminance	0.0171 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101D59 #594C10

analogous

#104159 #101D59 #271059

triadic

#101D59 #59101D #1D5910

tetradic

#101D59 #591041 #594C10 #105927

square

#101D59 #591041 #594C10 #105927

split-complementary

#101D59 #592710 #415910

monochromatic

#05081A #070C25 #101D59 #192E8D #233FC1

Accessibility & contrast

On white

15.65

#101D59 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#101D59 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101D59

15.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101D59	#FFFFFF	#000000	##FFFFFF
##101D59	1.00	15.65	1.34	15.65
#FFFFFF	15.65	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00275B

Deuteranopia (green-blind)

#002058

Tritanopia (blue-blind)

#002D38

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #101d59;
/* rgb */ color: rgb(16, 29, 89);
/* oklch */ color: oklch(26.5% 0.109 268.3);

Tailwind

colors: {
  custom: {
    50: '#5c5889',
    500: '#101d59',
    950: '#000000',
  },
}

SCSS

$custom: #101d59;
$custom-light: #5c5889;
$custom-dark: #000000;

JSON

{
  "hex": "#101d59",
  "rgb": {
    "r": 16,
    "g": 29,
    "b": 89
  },
  "hsl": {
    "h": 229.315,
    "s": 69.524,
    "l": 20.588
  },
  "oklch": {
    "l": 0.26501,
    "c": 0.10889,
    "h": 268.3
  },
  "luminance": 0.0171
}

Semantic roles & 50–950 ramp

primary

#101D59

secondary

#928133

accent

#CD3BEC

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#05030B

muted

#79787C

Preview Lab

Preview with #101D59

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

Preview Lab → · Contrast checker → · Palette generator →