#101859#101859

#101859 is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.5% C 0.115 H 270.0°. Best body text is #FFFFFF at 16.19:1 contrast (WCAG AA passes).

Color values

HEX	#101859
RGB	rgb(16, 24, 89)
HSL	hsl(233, 70%, 21%)
HSV	hsv(233, 82%, 35%)
CMYK	cmyk(82%, 73%, 0%, 65.1%)
CIE-LAB	lab(12.51, 22.63, -39.90)
CIE-LCH	lch(12.51, 45.87, 299.56°)
OKLab	oklab(25.49% 0.0001 -0.1155)
OKLCH	oklch(25.49% 0.115 270)
XYZ	xyz(2.3429, 1.4844, 9.6123)
Luminance	0.0149 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101859 #595110

analogous

#103C59 #101859 #2C1059

triadic

#101859 #591018 #185910

tetradic

#101859 #59103C #595110 #10592C

square

#101859 #59103C #595110 #10592C

split-complementary

#101859 #592C10 #3C5910

monochromatic

#05071A #070A25 #101859 #19268D #2334C1

Accessibility & contrast

On white

16.19

#101859 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#101859 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101859

16.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101859	#FFFFFF	#000000	##FFFFFF
##101859	1.00	16.19	1.30	16.19
#FFFFFF	16.19	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00245B

Deuteranopia (green-blind)

#001D58

Tritanopia (blue-blind)

#002A36

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #101859;
/* rgb */ color: rgb(16, 24, 89);
/* oklch */ color: oklch(25.5% 0.115 270.0);

Tailwind

colors: {
  custom: {
    50: '#5c5589',
    500: '#101859',
    950: '#000000',
  },
}

SCSS

$custom: #101859;
$custom-light: #5c5589;
$custom-dark: #000000;

JSON

{
  "hex": "#101859",
  "rgb": {
    "r": 16,
    "g": 24,
    "b": 89
  },
  "hsl": {
    "h": 233.425,
    "s": 69.524,
    "l": 20.588
  },
  "oklch": {
    "l": 0.25493,
    "c": 0.11548,
    "h": 270
  },
  "luminance": 0.01485
}

Semantic roles & 50–950 ramp

primary

#101859

secondary

#928833

accent

#D93BEC

background

#F5F4F8

surface

#E9E7F0

border

#C5C3CB

text

#05030B

muted

#79787C

Preview Lab

Preview with #101859

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

Preview Lab → · Contrast checker → · Palette generator →