#101D5D#101D5D

#101D5D is a dark, moderate blue. Relative luminance 0.018; OKLCH L 26.9% C 0.115 H 268.3°. Best body text is #FFFFFF at 15.49:1 contrast (WCAG AA passes).

Color values

HEX	#101D5D
RGB	rgb(16, 29, 93)
HSL	hsl(230, 71%, 21%)
HSV	hsv(230, 83%, 36%)
CMYK	cmyk(82.8%, 68.8%, 0%, 63.5%)
CIE-LAB	lab(14.28, 20.67, -39.68)
CIE-LCH	lch(14.28, 44.74, 297.52°)
OKLab	oklab(26.92% -0.0034 -0.1148)
OKLCH	oklch(26.92% 0.115 268.3)
XYZ	xyz(2.6282, 1.7789, 10.5587)
Luminance	0.0178 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101D5D #5D5010

analogous

#10445D #101D5D #2A105D

triadic

#101D5D #5D101D #1D5D10

tetradic

#101D5D #5D1044 #5D5010 #105D2A

square

#101D5D #5D1044 #5D5010 #105D2A

split-complementary

#101D5D #5D2A10 #445D10

monochromatic

#04081A #070D29 #101D5D #192D91 #223EC5

Accessibility & contrast

On white

15.49

#101D5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#101D5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101D5D

15.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101D5D	#FFFFFF	#000000	##FFFFFF
##101D5D	1.00	15.49	1.36	15.49
#FFFFFF	15.49	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00285F

Deuteranopia (green-blind)

#00215C

Tritanopia (blue-blind)

#002E3A

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #101d5d;
/* rgb */ color: rgb(16, 29, 93);
/* oklch */ color: oklch(26.9% 0.115 268.3);

Tailwind

colors: {
  custom: {
    50: '#5d588c',
    500: '#101d5d',
    950: '#000000',
  },
}

SCSS

$custom: #101d5d;
$custom-light: #5d588c;
$custom-dark: #000000;

JSON

{
  "hex": "#101d5d",
  "rgb": {
    "r": 16,
    "g": 29,
    "b": 93
  },
  "hsl": {
    "h": 229.87,
    "s": 70.642,
    "l": 21.373
  },
  "oklch": {
    "l": 0.26915,
    "c": 0.11483,
    "h": 268.3
  },
  "luminance": 0.01779
}

Semantic roles & 50–950 ramp

primary

#101D5D

secondary

#968533

accent

#CF3AED

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #101D5D

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

Preview Lab → · Contrast checker → · Palette generator →