#101027#101027

#101027 is a very dark, muted blue. Relative luminance 0.006; OKLCH L 18.8% C 0.046 H 281.0°. Best body text is #FFFFFF at 18.66:1 contrast (WCAG AA passes).

Color values

HEX	#101027
RGB	rgb(16, 16, 39)
HSL	hsl(240, 42%, 11%)
HSV	hsv(240, 59%, 15%)
CMYK	cmyk(59%, 59%, 0%, 84.7%)
CIE-LAB	lab(5.67, 6.92, -15.41)
CIE-LCH	lch(5.67, 16.90, 294.18°)
OKLab	oklab(18.75% 0.0088 -0.0451)
OKLCH	oklch(18.75% 0.046 281)
XYZ	xyz(0.7651, 0.6272, 1.9998)
Luminance	0.0063 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 8.50

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101027 #272710

analogous

#101B27 #101027 #1B1027

triadic

#101027 #271010 #102710

tetradic

#101027 #27101B #272710 #10271B

square

#101027 #27101B #272710 #10271B

split-complementary

#101027 #271B10 #1B2710

monochromatic

#090916 #090916 #101027 #222252 #34347E

Accessibility & contrast

On white

18.66

#101027 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#101027 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101027

18.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101027	#FFFFFF	#000000	##FFFFFF
##101027	1.00	18.66	1.13	18.66
#FFFFFF	18.66	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#071328

Deuteranopia (green-blind)

#061226

Tritanopia (blue-blind)

#081519

Achromatopsia (no color)

#121212

Design tokens & code

CSS

--color: #101027;
/* rgb */ color: rgb(16, 16, 39);
/* oklch */ color: oklch(18.8% 0.046 281.0);

Tailwind

colors: {
  custom: {
    50: '#4f4e61',
    500: '#101027',
    950: '#000000',
  },
}

SCSS

$custom: #101027;
$custom-light: #4f4e61;
$custom-dark: #000000;

JSON

{
  "hex": "#101027",
  "rgb": {
    "r": 16,
    "g": 16,
    "b": 39
  },
  "hsl": {
    "h": 240,
    "s": 41.818,
    "l": 10.784
  },
  "oklch": {
    "l": 0.18754,
    "c": 0.04592,
    "h": 281
  },
  "luminance": 0.00627
}

Semantic roles & 50–950 ramp

primary

#101027

secondary

#5F5F34

accent

#D256D2

background

#F4F4F5

surface

#E7E7E9

border

#C3C3C5

text

#020105

muted

#787779

Preview Lab

Preview with #101027

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

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