#101F55#101F55

#101F55 is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.5% C 0.100 H 267.3°. Best body text is #FFFFFF at 15.56:1 contrast (WCAG AA passes).

Color values

HEX	#101F55
RGB	rgb(16, 31, 85)
HSL	hsl(227, 68%, 20%)
HSV	hsv(227, 81%, 33%)
CMYK	cmyk(81.2%, 63.5%, 0%, 66.7%)
CIE-LAB	lab(14.09, 15.80, -34.61)
CIE-LCH	lch(14.09, 38.05, 294.55°)
OKLab	oklab(26.54% -0.0048 -0.0999)
OKLCH	oklch(26.54% 0.1 267.3)
XYZ	xyz(2.3428, 1.7458, 8.8061)
Luminance	0.0175 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101F55 #554610

analogous

#104155 #101F55 #241055

triadic

#101F55 #55101F #1F5510

tetradic

#101F55 #551041 #554610 #105524

square

#101F55 #551041 #554610 #105524

split-complementary

#101F55 #552410 #415510

monochromatic

#05091A #060C21 #101F55 #1A3289 #2345BC

Accessibility & contrast

On white

15.56

#101F55 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#101F55 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101F55

15.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101F55	#FFFFFF	#000000	##FFFFFF
##101F55	1.00	15.56	1.35	15.56
#FFFFFF	15.56	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002757

Deuteranopia (green-blind)

#002154

Tritanopia (blue-blind)

#002D36

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #101f55;
/* rgb */ color: rgb(16, 31, 85);
/* oklch */ color: oklch(26.5% 0.100 267.3);

Tailwind

colors: {
  custom: {
    50: '#5a5a85',
    500: '#101f55',
    950: '#000000',
  },
}

SCSS

$custom: #101f55;
$custom-light: #5a5a85;
$custom-dark: #000000;

JSON

{
  "hex": "#101f55",
  "rgb": {
    "r": 16,
    "g": 31,
    "b": 85
  },
  "hsl": {
    "h": 226.957,
    "s": 68.317,
    "l": 19.804
  },
  "oklch": {
    "l": 0.26537,
    "c": 0.10001,
    "h": 267.3
  },
  "luminance": 0.01746
}

Semantic roles & 50–950 ramp

primary

#101F55

secondary

#8F7A32

accent

#C53DEB

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#04030B

muted

#79787C

Preview Lab

Preview with #101F55

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

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