#101F4D#101F4D

#101F4D is a dark, moderate blue. Relative luminance 0.016; OKLCH L 25.8% C 0.087 H 266.6°. Best body text is #FFFFFF at 15.85:1 contrast (WCAG AA passes).

Color values

HEX	#101F4D
RGB	rgb(16, 31, 77)
HSL	hsl(225, 66%, 18%)
HSV	hsv(225, 79%, 30%)
CMYK	cmyk(79.2%, 59.7%, 0%, 69.8%)
CIE-LAB	lab(13.39, 12.35, -30.31)
CIE-LCH	lch(13.39, 32.73, 292.18°)
OKLab	oklab(25.79% -0.0052 -0.0873)
OKLCH	oklch(25.79% 0.087 266.6)
XYZ	xyz(2.0428, 1.6257, 7.2259)
Luminance	0.0163 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101F4D #4D3E10

analogous

#103D4D #101F4D #1F104D

triadic

#101F4D #4D101F #1F4D10

tetradic

#101F4D #4D103D #4D3E10 #104D1F

square

#101F4D #4D103D #4D3E10 #104D1F

split-complementary

#101F4D #4D1F10 #3D4D10

monochromatic

#050A19 #050B1A #101F4D #1B3380 #2548B2

Accessibility & contrast

On white

15.85

#101F4D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#101F4D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101F4D

15.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101F4D	#FFFFFF	#000000	##FFFFFF
##101F4D	1.00	15.85	1.33	15.85
#FFFFFF	15.85	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00254F

Deuteranopia (green-blind)

#00204C

Tritanopia (blue-blind)

#002A32

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #101f4d;
/* rgb */ color: rgb(16, 31, 77);
/* oklch */ color: oklch(25.8% 0.087 266.6);

Tailwind

colors: {
  custom: {
    50: '#585a7f',
    500: '#101f4d',
    950: '#000000',
  },
}

SCSS

$custom: #101f4d;
$custom-light: #585a7f;
$custom-dark: #000000;

JSON

{
  "hex": "#101f4d",
  "rgb": {
    "r": 16,
    "g": 31,
    "b": 77
  },
  "hsl": {
    "h": 225.246,
    "s": 65.591,
    "l": 18.235
  },
  "oklch": {
    "l": 0.25785,
    "c": 0.08742,
    "h": 266.6
  },
  "luminance": 0.01626
}

Semantic roles & 50–950 ramp

primary

#101F4D

secondary

#877232

accent

#BF3FE9

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #101F4D

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

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