#101A51#101A51

#101A51 is a dark, moderate blue. Relative luminance 0.014; OKLCH L 25.0% C 0.101 H 269.6°. Best body text is #FFFFFF at 16.30:1 contrast (WCAG AA passes).

Color values

HEX	#101A51
RGB	rgb(16, 26, 81)
HSL	hsl(231, 67%, 19%)
HSV	hsv(231, 80%, 32%)
CMYK	cmyk(80.2%, 67.9%, 0%, 68.2%)
CIE-LAB	lab(12.24, 17.86, -34.91)
CIE-LCH	lch(12.24, 39.21, 297.09°)
OKLab	oklab(25.04% -0.0008 -0.1009)
OKLCH	oklch(25.04% 0.101 269.6)
XYZ	xyz(2.0678, 1.4428, 7.9525)
Luminance	0.0144 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.27

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101A51 #514710

analogous

#103B51 #101A51 #271051

triadic

#101A51 #51101A #1A5110

tetradic

#101A51 #51103B #514710 #105127

square

#101A51 #51103B #514710 #105127

split-complementary

#101A51 #512710 #3B5110

monochromatic

#05081A #060A1E #101A51 #1A2A84 #243BB7

Accessibility & contrast

On white

16.30

#101A51 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#101A51 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101A51

16.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101A51	#FFFFFF	#000000	##FFFFFF
##101A51	1.00	16.30	1.29	16.30
#FFFFFF	16.30	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002353

Deuteranopia (green-blind)

#001D50

Tritanopia (blue-blind)

#002832

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #101a51;
/* rgb */ color: rgb(16, 26, 81);
/* oklch */ color: oklch(25.0% 0.101 269.6);

Tailwind

colors: {
  custom: {
    50: '#5a5682',
    500: '#101a51',
    950: '#000000',
  },
}

SCSS

$custom: #101a51;
$custom-light: #5a5682;
$custom-dark: #000000;

JSON

{
  "hex": "#101a51",
  "rgb": {
    "r": 16,
    "g": 26,
    "b": 81
  },
  "hsl": {
    "h": 230.769,
    "s": 67.01,
    "l": 19.02
  },
  "oklch": {
    "l": 0.25044,
    "c": 0.10086,
    "h": 269.6
  },
  "luminance": 0.01443
}

Semantic roles & 50–950 ramp

primary

#101A51

secondary

#8B7D32

accent

#CF3EEA

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#04030A

muted

#79787C

Preview Lab

Preview with #101A51

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

Preview Lab → · Contrast checker → · Palette generator →