#011531#011531

#011531 is a very dark, moderate blue. Relative luminance 0.008; OKLCH L 19.8% C 0.063 H 255.4°. Best body text is #FFFFFF at 18.21:1 contrast (WCAG AA passes).

Color values

HEX#011531
RGBrgb(1, 21, 49)
HSLhsl(215, 96%, 10%)
HSVhsv(215, 98%, 19%)
CMYKcmyk(98%, 57.1%, 0%, 80.8%)
CIE-LABlab(6.90, 4.44, -20.97)
CIE-LCHlch(6.90, 21.44, 281.95°)
OKLaboklab(19.83% -0.0158 -0.0606)
OKLCHoklch(19.83% 0.063 255.4)
XYZxyz(0.8349, 0.7644, 3.0087)
Luminance0.0076 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#011531 #311D01
analogous
#012D31 #011531 #050131
triadic
#011531 #310115 #153101
tetradic
#011531 #31012D #311D01 #013105
square
#011531 #31012D #311D01 #013105
split-complementary
#011531 #310501 #2D3101
monochromatic
#010D1E #010D1E #011531 #022F6D #0348A9

Accessibility & contrast

On white

18.21
#011531 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.15
#011531 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #011531
18.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##011531#FFFFFF#000000##FFFFFF
##0115311.0018.211.1518.21
#FFFFFF18.211.0021.001.00
#0000001.1521.001.0021.00
##FFFFFF18.211.0021.001.00

Color blindness preview

Protanopia (red-blind)
#051832
Deuteranopia (green-blind)
#001330
Tritanopia (blue-blind)
#001C20
Achromatopsia (no color)
#151515

Design tokens & code

CSS
--color: #011531;
/* rgb */ color: rgb(1, 21, 49);
/* oklch */ color: oklch(19.8% 0.063 255.4);
Tailwind
colors: {
  custom: {
    50: '#4a5169',
    500: '#011531',
    950: '#000000',
  },
}
SCSS
$custom: #011531;
$custom-light: #4a5169;
$custom-dark: #000000;
JSON
{
  "hex": "#011531",
  "rgb": {
    "r": 1,
    "g": 21,
    "b": 49
  },
  "hsl": {
    "h": 215,
    "s": 96,
    "l": 9.804
  },
  "oklch": {
    "l": 0.19828,
    "c": 0.06267,
    "h": 255.4
  },
  "luminance": 0.00765
}

Semantic roles & 50–950 ramp

primary
#011531
secondary
#774F17
accent
#A629FF
background
#F4F4F6
surface
#E7E7EB
border
#C3C3C6
text
#010206
muted
#77787A

Preview Lab

Preview with #011531

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

Preview Lab → · Contrast checker → · Palette generator →

#011531 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva