#101B53#101B53

#101B53 is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.5% C 0.103 H 269.1°. Best body text is #FFFFFF at 16.11:1 contrast (WCAG AA passes).

Color values

HEX	#101B53
RGB	rgb(16, 27, 83)
HSL	hsl(230, 68%, 19%)
HSV	hsv(230, 81%, 33%)
CMYK	cmyk(80.7%, 67.5%, 0%, 67.5%)
CIE-LAB	lab(12.72, 17.96, -35.48)
CIE-LCH	lch(12.72, 39.77, 296.84°)
OKLab	oklab(25.46% -0.0016 -0.1025)
OKLCH	oklch(25.46% 0.103 269.1)
XYZ	xyz(2.1664, 1.5183, 8.3608)
Luminance	0.0152 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.65

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101B53 #534810

analogous

#103D53 #101B53 #271053

triadic

#101B53 #53101B #1B5310

tetradic

#101B53 #53103D #534810 #105327

square

#101B53 #53103D #534810 #105327

split-complementary

#101B53 #532710 #3D5310

monochromatic

#05081A #060A20 #101B53 #1A2C86 #243CBA

Accessibility & contrast

On white

16.11

#101B53 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#101B53 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101B53

16.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101B53	#FFFFFF	#000000	##FFFFFF
##101B53	1.00	16.11	1.30	16.11
#FFFFFF	16.11	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002455

Deuteranopia (green-blind)

#001E52

Tritanopia (blue-blind)

#002934

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #101b53;
/* rgb */ color: rgb(16, 27, 83);
/* oklch */ color: oklch(25.5% 0.103 269.1);

Tailwind

colors: {
  custom: {
    50: '#5a5784',
    500: '#101b53',
    950: '#000000',
  },
}

SCSS

$custom: #101b53;
$custom-light: #5a5784;
$custom-dark: #000000;

JSON

{
  "hex": "#101b53",
  "rgb": {
    "r": 16,
    "g": 27,
    "b": 83
  },
  "hsl": {
    "h": 230.149,
    "s": 67.677,
    "l": 19.412
  },
  "oklch": {
    "l": 0.25462,
    "c": 0.10254,
    "h": 269.1
  },
  "luminance": 0.01519
}

Semantic roles & 50–950 ramp

primary

#101B53

secondary

#8D7E32

accent

#CE3DEB

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#04030B

muted

#79787C

Preview Lab

Preview with #101B53

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

Preview Lab → · Contrast checker → · Palette generator →