#101550#101550

#101550 is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.9% C 0.106 H 271.6°. Best body text is #FFFFFF at 16.86:1 contrast (WCAG AA passes).

Color values

HEX	#101550
RGB	rgb(16, 21, 80)
HSL	hsl(235, 67%, 19%)
HSV	hsv(235, 80%, 31%)
CMYK	cmyk(80%, 73.7%, 0%, 68.6%)
CIE-LAB	lab(10.74, 21.12, -36.68)
CIE-LCH	lch(10.74, 42.32, 299.93°)
OKLab	oklab(23.92% 0.003 -0.1061)
OKLCH	oklch(23.92% 0.106 271.6)
XYZ	xyz(1.9293, 1.2255, 7.7227)
Luminance	0.0123 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101550 #504B10

analogous

#103550 #101550 #2B1050

triadic

#101550 #501015 #155010

tetradic

#101550 #501035 #504B10 #10502B

square

#101550 #501035 #504B10 #10502B

split-complementary

#101550 #502B10 #355010

monochromatic

#05071A #06081D #101550 #1A2283 #2430B6

Accessibility & contrast

On white

16.86

#101550 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#101550 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101550

16.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101550	#FFFFFF	#000000	##FFFFFF
##101550	1.00	16.86	1.25	16.86
#FFFFFF	16.86	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002052

Deuteranopia (green-blind)

#001A4F

Tritanopia (blue-blind)

#002530

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #101550;
/* rgb */ color: rgb(16, 21, 80);
/* oklch */ color: oklch(23.9% 0.106 271.6);

Tailwind

colors: {
  custom: {
    50: '#5a5282',
    500: '#101550',
    950: '#000000',
  },
}

SCSS

$custom: #101550;
$custom-light: #5a5282;
$custom-dark: #000000;

JSON

{
  "hex": "#101550",
  "rgb": {
    "r": 16,
    "g": 21,
    "b": 80
  },
  "hsl": {
    "h": 235.313,
    "s": 66.667,
    "l": 18.824
  },
  "oklch": {
    "l": 0.23916,
    "c": 0.10611,
    "h": 271.6
  },
  "luminance": 0.01226
}

Semantic roles & 50–950 ramp

primary

#101550

secondary

#8A8332

accent

#DC3EEA

background

#F5F4F8

surface

#E9E7EF

border

#C5C3CA

text

#04020A

muted

#79787C

Preview Lab

Preview with #101550

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

Preview Lab → · Contrast checker → · Palette generator →