#101C3F#101C3F

#101C3F is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 23.8% C 0.069 H 266.9°. Best body text is #FFFFFF at 16.67:1 contrast (WCAG AA passes).

Color values

HEX	#101C3F
RGB	rgb(16, 28, 63)
HSL	hsl(225, 59%, 15%)
HSV	hsv(225, 75%, 25%)
CMYK	cmyk(74.6%, 55.6%, 0%, 75.3%)
CIE-LAB	lab(11.27, 8.58, -23.98)
CIE-LCH	lch(11.27, 25.47, 289.69°)
OKLab	oklab(23.82% -0.0037 -0.0687)
OKLCH	oklch(23.82% 0.069 266.9)
XYZ	xyz(1.5258, 1.2994, 4.8721)
Luminance	0.0130 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101C3F #3F3310

analogous

#10333F #101C3F #1B103F

triadic

#101C3F #3F101C #1C3F10

tetradic

#101C3F #3F1033 #3F3310 #103F1B

square

#101C3F #3F1033 #3F3310 #103F1B

split-complementary

#101C3F #3F1B10 #333F10

monochromatic

#060B18 #060B18 #101C3F #1C3270 #2947A1

Accessibility & contrast

On white

16.67

#101C3F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#101C3F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101C3F

16.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101C3F	#FFFFFF	#000000	##FFFFFF
##101C3F	1.00	16.67	1.26	16.67
#FFFFFF	16.67	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#092040

Deuteranopia (green-blind)

#021C3E

Tritanopia (blue-blind)

#00242A

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #101c3f;
/* rgb */ color: rgb(16, 28, 63);
/* oklch */ color: oklch(23.8% 0.069 266.9);

Tailwind

colors: {
  custom: {
    50: '#545774',
    500: '#101c3f',
    950: '#000000',
  },
}

SCSS

$custom: #101c3f;
$custom-light: #545774;
$custom-dark: #000000;

JSON

{
  "hex": "#101c3f",
  "rgb": {
    "r": 16,
    "g": 28,
    "b": 63
  },
  "hsl": {
    "h": 224.681,
    "s": 59.494,
    "l": 15.49
  },
  "oklch": {
    "l": 0.23817,
    "c": 0.06881,
    "h": 266.9
  },
  "luminance": 0.013
}

Semantic roles & 50–950 ramp

primary

#101C3F

secondary

#796732

accent

#BA45E3

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030308

muted

#78787B

Preview Lab

Preview with #101C3F

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

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