#101D58#101D58

#101D58 is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.4% C 0.107 H 268.3°. Best body text is #FFFFFF at 15.69:1 contrast (WCAG AA passes).

Color values

HEX	#101D58
RGB	rgb(16, 29, 88)
HSL	hsl(229, 69%, 20%)
HSV	hsv(229, 82%, 35%)
CMYK	cmyk(81.8%, 67%, 0%, 65.5%)
CIE-LAB	lab(13.79, 18.58, -37.13)
CIE-LCH	lch(13.79, 41.52, 296.58°)
OKLab	oklab(26.4% -0.0032 -0.1073)
OKLCH	oklch(26.4% 0.107 268.3)
XYZ	xyz(2.4139, 1.6932, 9.4302)
Luminance	0.0169 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101D58 #584B10

analogous

#104158 #101D58 #271058

triadic

#101D58 #58101D #1D5810

tetradic

#101D58 #581041 #584B10 #105827

square

#101D58 #581041 #584B10 #105827

split-complementary

#101D58 #582710 #415810

monochromatic

#05091A #070C24 #101D58 #192E8C #233FC0

Accessibility & contrast

On white

15.69

#101D58 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#101D58 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101D58

15.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101D58	#FFFFFF	#000000	##FFFFFF
##101D58	1.00	15.69	1.34	15.69
#FFFFFF	15.69	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00275A

Deuteranopia (green-blind)

#002057

Tritanopia (blue-blind)

#002C37

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #101d58;
/* rgb */ color: rgb(16, 29, 88);
/* oklch */ color: oklch(26.4% 0.107 268.3);

Tailwind

colors: {
  custom: {
    50: '#5b5888',
    500: '#101d58',
    950: '#000000',
  },
}

SCSS

$custom: #101d58;
$custom-light: #5b5888;
$custom-dark: #000000;

JSON

{
  "hex": "#101d58",
  "rgb": {
    "r": 16,
    "g": 29,
    "b": 88
  },
  "hsl": {
    "h": 229.167,
    "s": 69.231,
    "l": 20.392
  },
  "oklch": {
    "l": 0.26399,
    "c": 0.10738,
    "h": 268.3
  },
  "luminance": 0.01693
}

Semantic roles & 50–950 ramp

primary

#101D58

secondary

#918032

accent

#CC3CEC

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#04030B

muted

#79787C

Preview Lab

Preview with #101D58

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

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