#101538#101538

#101538 is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.5% C 0.068 H 273.2°. Best body text is #FFFFFF at 17.70:1 contrast (WCAG AA passes).

Color values

HEX	#101538
RGB	rgb(16, 21, 56)
HSL	hsl(233, 56%, 14%)
HSV	hsv(233, 71%, 22%)
CMYK	cmyk(71.4%, 62.5%, 0%, 78%)
CIE-LAB	lab(8.41, 11.06, -23.60)
CIE-LCH	lch(8.41, 26.06, 295.11°)
OKLab	oklab(21.47% 0.0038 -0.0677)
OKLCH	oklch(21.47% 0.068 273.2)
XYZ	xyz(1.1954, 0.9319, 3.8575)
Luminance	0.0093 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101538 #383310

analogous

#102938 #101538 #1F1038

triadic

#101538 #381015 #153810

tetradic

#101538 #381029 #383310 #10381F

square

#101538 #381029 #383310 #10381F

split-complementary

#101538 #381F10 #293810

monochromatic

#070918 #070918 #101538 #1E2768 #2B3997

Accessibility & contrast

On white

17.70

#101538 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#101538 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101538

17.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101538	#FFFFFF	#000000	##FFFFFF
##101538	1.00	17.70	1.19	17.70
#FFFFFF	17.70	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#021A39

Deuteranopia (green-blind)

#001737

Tritanopia (blue-blind)

#001D24

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #101538;
/* rgb */ color: rgb(16, 21, 56);
/* oklch */ color: oklch(21.5% 0.068 273.2);

Tailwind

colors: {
  custom: {
    50: '#53516f',
    500: '#101538',
    950: '#000000',
  },
}

SCSS

$custom: #101538;
$custom-light: #53516f;
$custom-dark: #000000;

JSON

{
  "hex": "#101538",
  "rgb": {
    "r": 16,
    "g": 21,
    "b": 56
  },
  "hsl": {
    "h": 232.5,
    "s": 55.556,
    "l": 14.118
  },
  "oklch": {
    "l": 0.2147,
    "c": 0.06779,
    "h": 273.2
  },
  "luminance": 0.00932
}

Semantic roles & 50–950 ramp

primary

#101538

secondary

#726A32

accent

#CC49DF

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#030207

muted

#78787A

Preview Lab

Preview with #101538

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

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