#101F5D#101F5D

#101F5D is a dark, moderate blue. Relative luminance 0.019; OKLCH L 27.3% C 0.112 H 267.6°. Best body text is #FFFFFF at 15.26:1 contrast (WCAG AA passes).

Color values

HEX	#101F5D
RGB	rgb(16, 31, 93)
HSL	hsl(228, 71%, 21%)
HSV	hsv(228, 83%, 36%)
CMYK	cmyk(82.8%, 66.7%, 0%, 63.5%)
CIE-LAB	lab(14.85, 19.21, -38.75)
CIE-LCH	lch(14.85, 43.25, 296.37°)
OKLab	oklab(27.33% -0.0047 -0.1121)
OKLCH	oklch(27.33% 0.112 267.6)
XYZ	xyz(2.6788, 1.8801, 10.5755)
Luminance	0.0188 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101F5D #5D4E10

analogous

#10465D #101F5D #28105D

triadic

#101F5D #5D101F #1F5D10

tetradic

#101F5D #5D1046 #5D4E10 #105D28

square

#101F5D #5D1046 #5D4E10 #105D28

split-complementary

#101F5D #5D2810 #465D10

monochromatic

#04091A #070E29 #101F5D #193091 #2242C5

Accessibility & contrast

On white

15.26

#101F5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#101F5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101F5D

15.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101F5D	#FFFFFF	#000000	##FFFFFF
##101F5D	1.00	15.26	1.38	15.26
#FFFFFF	15.26	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00295F

Deuteranopia (green-blind)

#00225C

Tritanopia (blue-blind)

#002F3A

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #101f5d;
/* rgb */ color: rgb(16, 31, 93);
/* oklch */ color: oklch(27.3% 0.112 267.6);

Tailwind

colors: {
  custom: {
    50: '#5d5a8c',
    500: '#101f5d',
    950: '#000000',
  },
}

SCSS

$custom: #101f5d;
$custom-light: #5d5a8c;
$custom-dark: #000000;

JSON

{
  "hex": "#101f5d",
  "rgb": {
    "r": 16,
    "g": 31,
    "b": 93
  },
  "hsl": {
    "h": 228.312,
    "s": 70.642,
    "l": 21.373
  },
  "oklch": {
    "l": 0.27331,
    "c": 0.11216,
    "h": 267.6
  },
  "luminance": 0.0188
}

Semantic roles & 50–950 ramp

primary

#101F5D

secondary

#968333

accent

#CB3AED

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #101F5D

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

Preview Lab → · Contrast checker → · Palette generator →