#101B3A#101B3A

#101B3A is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.1% C 0.062 H 266.9°. Best body text is #FFFFFF at 16.94:1 contrast (WCAG AA passes).

Color values

HEX	#101B3A
RGB	rgb(16, 27, 58)
HSL	hsl(224, 57%, 15%)
HSV	hsv(224, 72%, 23%)
CMYK	cmyk(72.4%, 53.4%, 0%, 77.3%)
CIE-LAB	lab(10.55, 7.20, -21.59)
CIE-LCH	lch(10.55, 22.76, 288.45°)
OKLab	oklab(23.15% -0.0034 -0.0617)
OKLCH	oklch(23.15% 0.062 266.9)
XYZ	xyz(1.3691, 1.1994, 4.1615)
Luminance	0.0120 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101B3A #3A2F10

analogous

#10303A #101B3A #1A103A

triadic

#101B3A #3A101B #1B3A10

tetradic

#101B3A #3A1030 #3A2F10 #103A1A

square

#101B3A #3A1030 #3A2F10 #103A1A

split-complementary

#101B3A #3A1A10 #303A10

monochromatic

#070B18 #070B18 #101B3A #1D316A #2A489A

Accessibility & contrast

On white

16.94

#101B3A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#101B3A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101B3A

16.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101B3A	#FFFFFF	#000000	##FFFFFF
##101B3A	1.00	16.94	1.24	16.94
#FFFFFF	16.94	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C1F3B

Deuteranopia (green-blind)

#061B39

Tritanopia (blue-blind)

#002227

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #101b3a;
/* rgb */ color: rgb(16, 27, 58);
/* oklch */ color: oklch(23.1% 0.062 266.9);

Tailwind

colors: {
  custom: {
    50: '#535670',
    500: '#101b3a',
    950: '#000000',
  },
}

SCSS

$custom: #101b3a;
$custom-light: #535670;
$custom-dark: #000000;

JSON

{
  "hex": "#101b3a",
  "rgb": {
    "r": 16,
    "g": 27,
    "b": 58
  },
  "hsl": {
    "h": 224.286,
    "s": 56.757,
    "l": 14.51
  },
  "oklch": {
    "l": 0.23146,
    "c": 0.06177,
    "h": 266.9
  },
  "luminance": 0.012
}

Semantic roles & 50–950 ramp

primary

#101B3A

secondary

#746332

accent

#B848E0

background

#F4F5F6

surface

#E8E9EC

border

#C4C5C7

text

#030307

muted

#78787A

Preview Lab

Preview with #101B3A

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

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