#101B4F#101B4F

#101B4F is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.1% C 0.096 H 269.1°. Best body text is #FFFFFF at 16.26:1 contrast (WCAG AA passes).

Color values

HEX	#101B4F
RGB	rgb(16, 27, 79)
HSL	hsl(230, 66%, 19%)
HSV	hsv(230, 80%, 31%)
CMYK	cmyk(79.7%, 65.8%, 0%, 69%)
CIE-LAB	lab(12.34, 16.26, -33.38)
CIE-LCH	lch(12.34, 37.13, 295.97°)
OKLab	oklab(25.06% -0.0016 -0.0963)
OKLCH	oklch(25.06% 0.096 269.1)
XYZ	xyz(2.0164, 1.4583, 7.5708)
Luminance	0.0146 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101B4F #4F4410

analogous

#103A4F #101B4F #24104F

triadic

#101B4F #4F101B #1B4F10

tetradic

#101B4F #4F103A #4F4410 #104F24

square

#101B4F #4F103A #4F4410 #104F24

split-complementary

#101B4F #4F2410 #3A4F10

monochromatic

#050919 #060A1C #101B4F #1A2C82 #253EB5

Accessibility & contrast

On white

16.26

#101B4F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#101B4F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101B4F

16.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101B4F	#FFFFFF	#000000	##FFFFFF
##101B4F	1.00	16.26	1.29	16.26
#FFFFFF	16.26	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002351

Deuteranopia (green-blind)

#001D4E

Tritanopia (blue-blind)

#002832

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #101b4f;
/* rgb */ color: rgb(16, 27, 79);
/* oklch */ color: oklch(25.1% 0.096 269.1);

Tailwind

colors: {
  custom: {
    50: '#595781',
    500: '#101b4f',
    950: '#000000',
  },
}

SCSS

$custom: #101b4f;
$custom-light: #595781;
$custom-dark: #000000;

JSON

{
  "hex": "#101b4f",
  "rgb": {
    "r": 16,
    "g": 27,
    "b": 79
  },
  "hsl": {
    "h": 229.524,
    "s": 66.316,
    "l": 18.627
  },
  "oklch": {
    "l": 0.25059,
    "c": 0.09636,
    "h": 269.1
  },
  "luminance": 0.01459
}

Semantic roles & 50–950 ramp

primary

#101B4F

secondary

#897A32

accent

#CB3FE9

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #101B4F

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

Preview Lab → · Contrast checker → · Palette generator →