#100B38#100B38

#100B38 is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 19.3% C 0.083 H 280.3°. Best body text is #FFFFFF at 18.63:1 contrast (WCAG AA passes).

Color values

HEX	#100B38
RGB	rgb(16, 11, 56)
HSL	hsl(247, 67%, 13%)
HSV	hsv(247, 80%, 22%)
CMYK	cmyk(71.4%, 80.4%, 0%, 78%)
CIE-LAB	lab(5.74, 17.56, -27.93)
CIE-LCH	lch(5.74, 32.99, 302.16°)
OKLab	oklab(19.31% 0.0148 -0.0818)
OKLCH	oklch(19.31% 0.083 280.3)
XYZ	xyz(1.0469, 0.6350, 3.8080)
Luminance	0.0063 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100B38 #33380B

analogous

#0B1C38 #100B38 #260B38

triadic

#100B38 #38100B #0B3810

tetradic

#100B38 #380B1C #33380B #0B3826

square

#100B38 #380B1C #33380B #0B3826

split-complementary

#100B38 #38260B #1C380B

monochromatic

#07051A #07051A #100B38 #1F156B #2D1F9E

Accessibility & contrast

On white

18.63

#100B38 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#100B38 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100B38

18.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100B38	#FFFFFF	#000000	##FFFFFF
##100B38	1.00	18.63	1.13	18.63
#FFFFFF	18.63	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001439

Deuteranopia (green-blind)

#001137

Tritanopia (blue-blind)

#001720

Achromatopsia (no color)

#131313

Design tokens & code

CSS

--color: #100b38;
/* rgb */ color: rgb(16, 11, 56);
/* oklch */ color: oklch(19.3% 0.083 280.3);

Tailwind

colors: {
  custom: {
    50: '#544b6f',
    500: '#100b38',
    950: '#000000',
  },
}

SCSS

$custom: #100b38;
$custom-light: #544b6f;
$custom-dark: #000000;

JSON

{
  "hex": "#100b38",
  "rgb": {
    "r": 16,
    "g": 11,
    "b": 56
  },
  "hsl": {
    "h": 246.667,
    "s": 67.164,
    "l": 13.137
  },
  "oklch": {
    "l": 0.19315,
    "c": 0.08311,
    "h": 280.3
  },
  "luminance": 0.00635
}

Semantic roles & 50–950 ramp

primary

#100B38

secondary

#6C752A

accent

#EA3ED7

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#030107

muted

#78777A

Preview Lab

Preview with #100B38

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

Preview Lab → · Contrast checker → · Palette generator →