#101D64#101D64

#101D64 is a dark, vivid blue. Relative luminance 0.019; OKLCH L 27.7% C 0.125 H 268.3°. Best body text is #FFFFFF at 15.20:1 contrast (WCAG AA passes).

Color values

HEX	#101D64
RGB	rgb(16, 29, 100)
HSL	hsl(231, 72%, 23%)
HSV	hsv(231, 84%, 39%)
CMYK	cmyk(84%, 71%, 0%, 60.8%)
CIE-LAB	lab(15.00, 23.56, -43.15)
CIE-LCH	lch(15.00, 49.16, 298.63°)
OKLab	oklab(27.66% -0.0038 -0.1249)
OKLCH	oklch(27.66% 0.125 268.3)
XYZ	xyz(2.9525, 1.9086, 12.2669)
Luminance	0.0191 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101D64 #645710

analogous

#104764 #101D64 #2D1064

triadic

#101D64 #64101D #1D6410

tetradic

#101D64 #641047 #645710 #10642D

square

#101D64 #641047 #645710 #10642D

split-complementary

#101D64 #642D10 #476410

monochromatic

#04081A #080E2F #101D64 #182C99 #213CCE

Accessibility & contrast

On white

15.20

#101D64 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#101D64 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101D64

15.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101D64	#FFFFFF	#000000	##FFFFFF
##101D64	1.00	15.20	1.38	15.20
#FFFFFF	15.20	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A66

Deuteranopia (green-blind)

#002263

Tritanopia (blue-blind)

#00303D

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #101d64;
/* rgb */ color: rgb(16, 29, 100);
/* oklch */ color: oklch(27.7% 0.125 268.3);

Tailwind

colors: {
  custom: {
    50: '#5f5991',
    500: '#101d64',
    950: '#000000',
  },
}

SCSS

$custom: #101d64;
$custom-light: #5f5991;
$custom-dark: #000000;

JSON

{
  "hex": "#101d64",
  "rgb": {
    "r": 16,
    "g": 29,
    "b": 100
  },
  "hsl": {
    "h": 230.714,
    "s": 72.414,
    "l": 22.745
  },
  "oklch": {
    "l": 0.27662,
    "c": 0.12499,
    "h": 268.3
  },
  "luminance": 0.01909
}

Semantic roles & 50–950 ramp

primary

#101D64

secondary

#9D8C33

accent

#D339EF

background

#F6F5F9

surface

#EBE9F1

border

#C6C5CB

text

#05030D

muted

#79787E

Preview Lab

Preview with #101D64

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

Preview Lab → · Contrast checker → · Palette generator →