#101A3B#101A3B

#101A3B is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.0% C 0.065 H 268.3°. Best body text is #FFFFFF at 17.03:1 contrast (WCAG AA passes).

Color values

HEX	#101A3B
RGB	rgb(16, 26, 59)
HSL	hsl(226, 57%, 15%)
HSV	hsv(226, 73%, 23%)
CMYK	cmyk(72.9%, 55.9%, 0%, 76.9%)
CIE-LAB	lab(10.29, 8.41, -22.72)
CIE-LCH	lch(10.29, 24.23, 290.32°)
OKLab	oklab(22.97% -0.002 -0.065)
OKLCH	oklch(22.97% 0.065 268.3)
XYZ	xyz(1.3722, 1.1646, 4.2893)
Luminance	0.0117 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101A3B #3B3110

analogous

#102F3B #101A3B #1C103B

triadic

#101A3B #3B101A #1A3B10

tetradic

#101A3B #3B102F #3B3110 #103B1C

square

#101A3B #3B102F #3B3110 #103B1C

split-complementary

#101A3B #3B1C10 #2F3B10

monochromatic

#070B18 #070B18 #101A3B #1D2F6B #2A449B

Accessibility & contrast

On white

17.03

#101A3B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#101A3B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101A3B

17.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101A3B	#FFFFFF	#000000	##FFFFFF
##101A3B	1.00	17.03	1.23	17.03
#FFFFFF	17.03	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#091E3C

Deuteranopia (green-blind)

#031A3A

Tritanopia (blue-blind)

#002227

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #101a3b;
/* rgb */ color: rgb(16, 26, 59);
/* oklch */ color: oklch(23.0% 0.065 268.3);

Tailwind

colors: {
  custom: {
    50: '#545671',
    500: '#101a3b',
    950: '#000000',
  },
}

SCSS

$custom: #101a3b;
$custom-light: #545671;
$custom-dark: #000000;

JSON

{
  "hex": "#101a3b",
  "rgb": {
    "r": 16,
    "g": 26,
    "b": 59
  },
  "hsl": {
    "h": 226.047,
    "s": 57.333,
    "l": 14.706
  },
  "oklch": {
    "l": 0.22972,
    "c": 0.06505,
    "h": 268.3
  },
  "luminance": 0.01165
}

Semantic roles & 50–950 ramp

primary

#101A3B

secondary

#756532

accent

#BD47E1

background

#F5F4F6

surface

#E8E8EC

border

#C4C4C7

text

#030307

muted

#78787A

Preview Lab

Preview with #101A3B

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

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