#101C51#101C51

#101C51 is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.5% C 0.098 H 268.6°. Best body text is #FFFFFF at 16.07:1 contrast (WCAG AA passes).

Color values

HEX	#101C51
RGB	rgb(16, 28, 81)
HSL	hsl(229, 67%, 19%)
HSV	hsv(229, 80%, 32%)
CMYK	cmyk(80.2%, 65.4%, 0%, 68.2%)
CIE-LAB	lab(12.83, 16.36, -33.95)
CIE-LCH	lch(12.83, 37.69, 295.72°)
OKLab	oklab(25.48% -0.0024 -0.098)
OKLCH	oklch(25.48% 0.098 268.6)
XYZ	xyz(2.1136, 1.5345, 7.9678)
Luminance	0.0154 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.66

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101C51 #514510

analogous

#103D51 #101C51 #251051

triadic

#101C51 #51101C #1C5110

tetradic

#101C51 #51103D #514510 #105125

square

#101C51 #51103D #514510 #105125

split-complementary

#101C51 #512510 #3D5110

monochromatic

#05091A #060A1E #101C51 #1A2E84 #243FB7

Accessibility & contrast

On white

16.07

#101C51 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#101C51 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101C51

16.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101C51	#FFFFFF	#000000	##FFFFFF
##101C51	1.00	16.07	1.31	16.07
#FFFFFF	16.07	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002453

Deuteranopia (green-blind)

#001E50

Tritanopia (blue-blind)

#002933

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #101c51;
/* rgb */ color: rgb(16, 28, 81);
/* oklch */ color: oklch(25.5% 0.098 268.6);

Tailwind

colors: {
  custom: {
    50: '#595782',
    500: '#101c51',
    950: '#000000',
  },
}

SCSS

$custom: #101c51;
$custom-light: #595782;
$custom-dark: #000000;

JSON

{
  "hex": "#101c51",
  "rgb": {
    "r": 16,
    "g": 28,
    "b": 81
  },
  "hsl": {
    "h": 228.923,
    "s": 67.01,
    "l": 19.02
  },
  "oklch": {
    "l": 0.25478,
    "c": 0.09806,
    "h": 268.6
  },
  "luminance": 0.01535
}

Semantic roles & 50–950 ramp

primary

#101C51

secondary

#8B7A32

accent

#CA3EEA

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#04030A

muted

#79787C

Preview Lab

Preview with #101C51

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

Preview Lab → · Contrast checker → · Palette generator →