#101C59#101C59

#101C59 is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.3% C 0.110 H 268.7°. Best body text is #FFFFFF at 15.76:1 contrast (WCAG AA passes).

Color values

HEX	#101C59
RGB	rgb(16, 28, 89)
HSL	hsl(230, 70%, 21%)
HSV	hsv(230, 82%, 35%)
CMYK	cmyk(82%, 68.5%, 0%, 65.1%)
CIE-LAB	lab(13.60, 19.74, -38.11)
CIE-LCH	lch(13.60, 42.92, 297.38°)
OKLab	oklab(26.29% -0.0025 -0.1102)
OKLCH	oklch(26.29% 0.11 268.7)
XYZ	xyz(2.4315, 1.6617, 9.6418)
Luminance	0.0166 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101C59 #594D10

analogous

#104059 #101C59 #281059

triadic

#101C59 #59101C #1C5910

tetradic

#101C59 #591040 #594D10 #105928

square

#101C59 #591040 #594D10 #105928

split-complementary

#101C59 #592810 #405910

monochromatic

#05081A #070C25 #101C59 #192C8D #233DC1

Accessibility & contrast

On white

15.76

#101C59 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#101C59 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101C59

15.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101C59	#FFFFFF	#000000	##FFFFFF
##101C59	1.00	15.76	1.33	15.76
#FFFFFF	15.76	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00265B

Deuteranopia (green-blind)

#001F58

Tritanopia (blue-blind)

#002C37

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #101c59;
/* rgb */ color: rgb(16, 28, 89);
/* oklch */ color: oklch(26.3% 0.110 268.7);

Tailwind

colors: {
  custom: {
    50: '#5c5889',
    500: '#101c59',
    950: '#000000',
  },
}

SCSS

$custom: #101c59;
$custom-light: #5c5889;
$custom-dark: #000000;

JSON

{
  "hex": "#101c59",
  "rgb": {
    "r": 16,
    "g": 28,
    "b": 89
  },
  "hsl": {
    "h": 230.137,
    "s": 69.524,
    "l": 20.588
  },
  "oklch": {
    "l": 0.26292,
    "c": 0.11024,
    "h": 268.7
  },
  "luminance": 0.01662
}

Semantic roles & 50–950 ramp

primary

#101C59

secondary

#928333

accent

#CF3BEC

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#05030B

muted

#79787C

Preview Lab

Preview with #101C59

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

Preview Lab → · Contrast checker → · Palette generator →