#101B55#101B55

#101B55 is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.7% C 0.106 H 269.1°. Best body text is #FFFFFF at 16.03:1 contrast (WCAG AA passes).

Color values

HEX	#101B55
RGB	rgb(16, 27, 85)
HSL	hsl(230, 68%, 20%)
HSV	hsv(230, 81%, 33%)
CMYK	cmyk(81.2%, 68.2%, 0%, 66.7%)
CIE-LAB	lab(12.92, 18.80, -36.52)
CIE-LCH	lch(12.92, 41.07, 297.23°)
OKLab	oklab(25.67% -0.0017 -0.1056)
OKLCH	oklch(25.67% 0.106 269.1)
XYZ	xyz(2.2447, 1.5497, 8.7734)
Luminance	0.0155 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101B55 #554A10

analogous

#103E55 #101B55 #281055

triadic

#101B55 #55101B #1B5510

tetradic

#101B55 #55103E #554A10 #105528

square

#101B55 #55103E #554A10 #105528

split-complementary

#101B55 #552810 #3E5510

monochromatic

#05081A #060B21 #101B55 #1A2B89 #233CBC

Accessibility & contrast

On white

16.03

#101B55 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#101B55 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101B55

16.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101B55	#FFFFFF	#000000	##FFFFFF
##101B55	1.00	16.03	1.31	16.03
#FFFFFF	16.03	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002557

Deuteranopia (green-blind)

#001E54

Tritanopia (blue-blind)

#002A35

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #101b55;
/* rgb */ color: rgb(16, 27, 85);
/* oklch */ color: oklch(25.7% 0.106 269.1);

Tailwind

colors: {
  custom: {
    50: '#5b5785',
    500: '#101b55',
    950: '#000000',
  },
}

SCSS

$custom: #101b55;
$custom-light: #5b5785;
$custom-dark: #000000;

JSON

{
  "hex": "#101b55",
  "rgb": {
    "r": 16,
    "g": 27,
    "b": 85
  },
  "hsl": {
    "h": 230.435,
    "s": 68.317,
    "l": 19.804
  },
  "oklch": {
    "l": 0.25668,
    "c": 0.10558,
    "h": 269.1
  },
  "luminance": 0.0155
}

Semantic roles & 50–950 ramp

primary

#101B55

secondary

#8F8032

accent

#CF3DEB

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#04030B

muted

#79787C

Preview Lab

Preview with #101B55

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

Preview Lab → · Contrast checker → · Palette generator →