#101B66#101B66

#101B66 is a dark, vivid blue. Relative luminance 0.019; OKLCH L 27.5% C 0.130 H 268.7°. Best body text is #FFFFFF at 15.32:1 contrast (WCAG AA passes).

Color values

HEX	#101B66
RGB	rgb(16, 27, 102)
HSL	hsl(232, 73%, 23%)
HSV	hsv(232, 84%, 40%)
CMYK	cmyk(84.3%, 73.5%, 0%, 60%)
CIE-LAB	lab(14.70, 25.76, -44.97)
CIE-LCH	lch(14.70, 51.82, 299.81°)
OKLab	oklab(27.51% -0.0029 -0.1302)
OKLCH	oklch(27.51% 0.13 268.7)
XYZ	xyz(3.0031, 1.8530, 12.7672)
Luminance	0.0185 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101B66 #665B10

analogous

#104666 #101B66 #301066

triadic

#101B66 #66101B #1B6610

tetradic

#101B66 #661046 #665B10 #106630

square

#101B66 #661046 #665B10 #106630

split-complementary

#101B66 #663010 #466610

monochromatic

#04071A #080D31 #101B66 #18299B #2137D0

Accessibility & contrast

On white

15.32

#101B66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#101B66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101B66

15.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101B66	#FFFFFF	#000000	##FFFFFF
##101B66	1.00	15.32	1.37	15.32
#FFFFFF	15.32	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002968

Deuteranopia (green-blind)

#002165

Tritanopia (blue-blind)

#00303E

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #101b66;
/* rgb */ color: rgb(16, 27, 102);
/* oklch */ color: oklch(27.5% 0.130 268.7);

Tailwind

colors: {
  custom: {
    50: '#605793',
    500: '#101b66',
    950: '#000000',
  },
}

SCSS

$custom: #101b66;
$custom-light: #605793;
$custom-dark: #000000;

JSON

{
  "hex": "#101b66",
  "rgb": {
    "r": 16,
    "g": 27,
    "b": 102
  },
  "hsl": {
    "h": 232.326,
    "s": 72.881,
    "l": 23.137
  },
  "oklch": {
    "l": 0.27505,
    "c": 0.13028,
    "h": 268.7
  },
  "luminance": 0.01853
}

Semantic roles & 50–950 ramp

primary

#101B66

secondary

#9E9133

accent

#D838F0

background

#F6F5F9

surface

#EBE9F1

border

#C6C5CB

text

#06030D

muted

#7A787E

Preview Lab

Preview with #101B66

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

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