#100B30#100B30

#100B30 is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 18.4% C 0.070 H 283.2°. Best body text is #FFFFFF at 18.87:1 contrast (WCAG AA passes).

Color values

HEX	#100B30
RGB	rgb(16, 11, 48)
HSL	hsl(248, 63%, 12%)
HSV	hsv(248, 77%, 19%)
CMYK	cmyk(66.7%, 77.1%, 0%, 81.2%)
CIE-LAB	lab(5.08, 13.58, -23.09)
CIE-LCH	lch(5.08, 26.79, 300.46°)
OKLab	oklab(18.44% 0.0161 -0.0686)
OKLCH	oklch(18.44% 0.07 283.2)
XYZ	xyz(0.8667, 0.5629, 2.8587)
Luminance	0.0056 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100B30 #2B300B

analogous

#0B1930 #100B30 #230B30

triadic

#100B30 #30100B #0B3010

tetradic

#100B30 #300B19 #2B300B #0B3023

square

#100B30 #300B19 #2B300B #0B3023

split-complementary

#100B30 #30230B #19300B

monochromatic

#080619 #080619 #100B30 #211662 #312294

Accessibility & contrast

On white

18.87

#100B30 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#100B30 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100B30

18.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100B30	#FFFFFF	#000000	##FFFFFF
##100B30	1.00	18.87	1.11	18.87
#FFFFFF	18.87	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001231

Deuteranopia (green-blind)

#00102F

Tritanopia (blue-blind)

#03141C

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #100b30;
/* rgb */ color: rgb(16, 11, 48);
/* oklch */ color: oklch(18.4% 0.070 283.2);

Tailwind

colors: {
  custom: {
    50: '#514b68',
    500: '#100b30',
    950: '#000000',
  },
}

SCSS

$custom: #100b30;
$custom-light: #514b68;
$custom-dark: #000000;

JSON

{
  "hex": "#100b30",
  "rgb": {
    "r": 16,
    "g": 11,
    "b": 48
  },
  "hsl": {
    "h": 248.108,
    "s": 62.712,
    "l": 11.569
  },
  "oklch": {
    "l": 0.18442,
    "c": 0.07042,
    "h": 283.2
  },
  "luminance": 0.00563
}

Semantic roles & 50–950 ramp

primary

#100B30

secondary

#646D2A

accent

#E642D0

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#020106

muted

#78777A

Preview Lab

Preview with #100B30

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

Preview Lab → · Contrast checker → · Palette generator →