#101B51#101B51

#101B51 is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.3% C 0.099 H 269.1°. Best body text is #FFFFFF at 16.18:1 contrast (WCAG AA passes).

Color values

HEX#101B51
RGBrgb(16, 27, 81)
HSLhsl(230, 67%, 19%)
HSVhsv(230, 80%, 32%)
CMYKcmyk(80.2%, 66.7%, 0%, 68.2%)
CIE-LABlab(12.53, 17.11, -34.44)
CIE-LCHlch(12.53, 38.45, 296.42°)
OKLaboklab(25.26% -0.0016 -0.0994)
OKLCHoklch(25.26% 0.099 269.1)
XYZxyz(2.0903, 1.4879, 7.9600)
Luminance0.0149 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#101B51 #514610
analogous
#103C51 #101B51 #261051
triadic
#101B51 #51101B #1B5110
tetradic
#101B51 #51103C #514610 #105126
square
#101B51 #51103C #514610 #105126
split-complementary
#101B51 #512610 #3C5110
monochromatic
#05091A #060A1E #101B51 #1A2C84 #243DB7

Accessibility & contrast

On white

16.18
#101B51 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.30
#101B51 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101B51
16.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##101B51#FFFFFF#000000##FFFFFF
##101B511.0016.181.3016.18
#FFFFFF16.181.0021.001.00
#0000001.3021.001.0021.00
##FFFFFF16.181.0021.001.00

Color blindness preview

Protanopia (red-blind)
#002453
Deuteranopia (green-blind)
#001E50
Tritanopia (blue-blind)
#002933
Achromatopsia (no color)
#212121

Design tokens & code

CSS
--color: #101b51;
/* rgb */ color: rgb(16, 27, 81);
/* oklch */ color: oklch(25.3% 0.099 269.1);
Tailwind
colors: {
  custom: {
    50: '#5a5782',
    500: '#101b51',
    950: '#000000',
  },
}
SCSS
$custom: #101b51;
$custom-light: #5a5782;
$custom-dark: #000000;
JSON
{
  "hex": "#101b51",
  "rgb": {
    "r": 16,
    "g": 27,
    "b": 81
  },
  "hsl": {
    "h": 229.846,
    "s": 67.01,
    "l": 19.02
  },
  "oklch": {
    "l": 0.25259,
    "c": 0.09946,
    "h": 269.1
  },
  "luminance": 0.01488
}

Semantic roles & 50–950 ramp

primary
#101B51
secondary
#8B7C32
accent
#CD3EEA
background
#F5F5F8
surface
#E9E9EF
border
#C5C5CA
text
#04030A
muted
#79787C

Preview Lab

Preview with #101B51

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

Preview Lab → · Contrast checker → · Palette generator →

#101B51 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva