#101540#101540

#101540 is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.2% C 0.081 H 272.8°. Best body text is #FFFFFF at 17.45:1 contrast (WCAG AA passes).

Color values

HEX	#101540
RGB	rgb(16, 21, 64)
HSL	hsl(234, 60%, 16%)
HSV	hsv(234, 75%, 25%)
CMYK	cmyk(75%, 67.2%, 0%, 74.9%)
CIE-LAB	lab(9.13, 14.46, -28.16)
CIE-LCH	lch(9.13, 31.65, 297.18°)
OKLab	oklab(22.23% 0.004 -0.0811)
OKLCH	oklch(22.23% 0.081 272.8)
XYZ	xyz(1.4070, 1.0165, 4.9716)
Luminance	0.0102 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101540 #403B10

analogous

#102D40 #101540 #231040

triadic

#101540 #401015 #154010

tetradic

#101540 #40102D #403B10 #104023

square

#101540 #40102D #403B10 #104023

split-complementary

#101540 #402310 #2D4010

monochromatic

#060818 #060818 #101540 #1C2571 #2835A2

Accessibility & contrast

On white

17.45

#101540 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#101540 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101540

17.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101540	#FFFFFF	#000000	##FFFFFF
##101540	1.00	17.45	1.20	17.45
#FFFFFF	17.45	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001C41

Deuteranopia (green-blind)

#00183F

Tritanopia (blue-blind)

#002028

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #101540;
/* rgb */ color: rgb(16, 21, 64);
/* oklch */ color: oklch(22.2% 0.081 272.8);

Tailwind

colors: {
  custom: {
    50: '#555275',
    500: '#101540',
    950: '#000000',
  },
}

SCSS

$custom: #101540;
$custom-light: #555275;
$custom-dark: #000000;

JSON

{
  "hex": "#101540",
  "rgb": {
    "r": 16,
    "g": 21,
    "b": 64
  },
  "hsl": {
    "h": 233.75,
    "s": 60,
    "l": 15.686
  },
  "oklch": {
    "l": 0.22232,
    "c": 0.0812,
    "h": 272.8
  },
  "luminance": 0.01017
}

Semantic roles & 50–950 ramp

primary

#101540

secondary

#7A7232

accent

#D345E3

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030208

muted

#78787B

Preview Lab

Preview with #101540

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

Preview Lab → · Contrast checker → · Palette generator →