#101040#101040

#101040 is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.2% C 0.089 H 275.7°. Best body text is #FFFFFF at 17.95:1 contrast (WCAG AA passes).

Color values

HEX	#101040
RGB	rgb(16, 16, 64)
HSL	hsl(240, 60%, 16%)
HSV	hsv(240, 75%, 25%)
CMYK	cmyk(75%, 75%, 0%, 74.9%)
CIE-LAB	lab(7.69, 18.22, -30.51)
CIE-LCH	lch(7.69, 35.54, 300.84°)
OKLab	oklab(21.17% 0.0089 -0.0881)
OKLCH	oklch(21.17% 0.089 275.7)
XYZ	xyz(1.3241, 0.8508, 4.9439)
Luminance	0.0085 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Navy Blue (survey)

#001146

ΔE00 2.75

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101040 #404010

analogous

#102840 #101040 #281040

triadic

#101040 #401010 #104010

tetradic

#101040 #401028 #404010 #104028

square

#101040 #401028 #404010 #104028

split-complementary

#101040 #402810 #284010

monochromatic

#060618 #060618 #101040 #1C1C71 #2828A2

Accessibility & contrast

On white

17.95

#101040 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#101040 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101040

17.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101040	#FFFFFF	#000000	##FFFFFF
##101040	1.00	17.95	1.17	17.95
#FFFFFF	17.95	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	17.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001941

Deuteranopia (green-blind)

#00153F

Tritanopia (blue-blind)

#001D26

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #101040;
/* rgb */ color: rgb(16, 16, 64);
/* oklch */ color: oklch(21.2% 0.089 275.7);

Tailwind

colors: {
  custom: {
    50: '#564e75',
    500: '#101040',
    950: '#000000',
  },
}

SCSS

$custom: #101040;
$custom-light: #564e75;
$custom-dark: #000000;

JSON

{
  "hex": "#101040",
  "rgb": {
    "r": 16,
    "g": 16,
    "b": 64
  },
  "hsl": {
    "h": 240,
    "s": 60,
    "l": 15.686
  },
  "oklch": {
    "l": 0.21169,
    "c": 0.08851,
    "h": 275.7
  },
  "luminance": 0.00851
}

Semantic roles & 50–950 ramp

primary

#101040

secondary

#7A7A32

accent

#E345E3

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030108

muted

#78777B

Preview Lab

Preview with #101040

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

Preview Lab → · Contrast checker → · Palette generator →