#101D4F#101D4F

#101D4F is a dark, moderate blue. Relative luminance 0.016; OKLCH L 25.5% C 0.093 H 268.0°. Best body text is #FFFFFF at 16.02:1 contrast (WCAG AA passes).

Color values

HEX	#101D4F
RGB	rgb(16, 29, 79)
HSL	hsl(228, 66%, 19%)
HSV	hsv(228, 80%, 31%)
CMYK	cmyk(79.7%, 63.3%, 0%, 69%)
CIE-LAB	lab(12.94, 14.74, -32.40)
CIE-LCH	lch(12.94, 35.59, 294.46°)
OKLab	oklab(25.51% -0.0033 -0.0934)
OKLCH	oklch(25.51% 0.094 268)
XYZ	xyz(2.0638, 1.5532, 7.5866)
Luminance	0.0155 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.77

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101D4F #4F4210

analogous

#103C4F #101D4F #22104F

triadic

#101D4F #4F101D #1D4F10

tetradic

#101D4F #4F103C #4F4210 #104F22

square

#101D4F #4F103C #4F4210 #104F22

split-complementary

#101D4F #4F2210 #3C4F10

monochromatic

#050919 #060A1C #101D4F #1A3082 #2542B5

Accessibility & contrast

On white

16.02

#101D4F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#101D4F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101D4F

16.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101D4F	#FFFFFF	#000000	##FFFFFF
##101D4F	1.00	16.02	1.31	16.02
#FFFFFF	16.02	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002451

Deuteranopia (green-blind)

#001F4E

Tritanopia (blue-blind)

#002932

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #101d4f;
/* rgb */ color: rgb(16, 29, 79);
/* oklch */ color: oklch(25.5% 0.093 268.0);

Tailwind

colors: {
  custom: {
    50: '#595881',
    500: '#101d4f',
    950: '#000000',
  },
}

SCSS

$custom: #101d4f;
$custom-light: #595881;
$custom-dark: #000000;

JSON

{
  "hex": "#101d4f",
  "rgb": {
    "r": 16,
    "g": 29,
    "b": 79
  },
  "hsl": {
    "h": 227.619,
    "s": 66.316,
    "l": 18.627
  },
  "oklch": {
    "l": 0.25507,
    "c": 0.0935,
    "h": 268
  },
  "luminance": 0.01553
}

Semantic roles & 50–950 ramp

primary

#101D4F

secondary

#897732

accent

#C63FE9

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #101D4F

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

Preview Lab → · Contrast checker → · Palette generator →