#1C1DB3#1C1DB3

#1C1DB3 is a dark, highly saturated blue. Relative luminance 0.044; OKLCH L 37.5% C 0.221 H 268.8°. Best body text is #FFFFFF at 11.19:1 contrast (WCAG AA passes).

Color values

HEX#1C1DB3
RGBrgb(28, 29, 179)
HSLhsl(240, 73%, 41%)
HSVhsv(240, 84%, 70%)
CMYKcmyk(84.4%, 83.8%, 0%, 29.8%)
CIE-LABlab(24.89, 52.10, -76.25)
CIE-LCHlch(24.89, 92.35, 304.34°)
OKLaboklab(37.52% -0.0046 -0.2207)
OKLCHoklch(37.52% 0.221 268.8)
XYZxyz(9.0522, 4.3792, 43.0073)
Luminance0.0438 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1C1DB3 #B3B21C
analogous
#1C68B3 #1C1DB3 #671CB3
triadic
#1C1DB3 #B31C1D #1DB31C
tetradic
#1C1DB3 #B31C68 #B3B21C #1CB367
square
#1C1DB3 #B31C68 #B3B21C #1CB367
split-complementary
#1C1DB3 #B3671C #68B31C
monochromatic
#0B0C49 #14147E #1C1DB3 #2E2FDE #6364E7

Accessibility & contrast

On white

11.19
#1C1DB3 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.88
#1C1DB3 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C1DB3
11.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1C1DB3#FFFFFF#000000##FFFFFF
##1C1DB31.0011.191.8811.19
#FFFFFF11.191.0021.001.00
#0000001.8821.001.0021.00
##FFFFFF11.191.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0043B7
Deuteranopia (green-blind)
#0033B1
Tritanopia (blue-blind)
#004E6A
Achromatopsia (no color)
#3B3B3B

Design tokens & code

CSS
--color: #1c1db3;
/* rgb */ color: rgb(28, 29, 179);
/* oklch */ color: oklch(37.5% 0.221 268.8);
Tailwind
colors: {
  custom: {
    50: '#785ecb',
    500: '#1c1db3',
    950: '#000000',
  },
}
SCSS
$custom: #1c1db3;
$custom-light: #785ecb;
$custom-dark: #000000;
JSON
{
  "hex": "#1c1db3",
  "rgb": {
    "r": 28,
    "g": 29,
    "b": 179
  },
  "hsl": {
    "h": 239.603,
    "s": 72.947,
    "l": 40.588
  },
  "oklch": {
    "l": 0.37523,
    "c": 0.2208,
    "h": 268.8
  },
  "luminance": 0.0438
}

Semantic roles & 50–950 ramp

primary
#1C1DB3
secondary
#CBCB5F
accent
#EE38F0
background
#F8F5FC
surface
#EFE9F9
border
#CAC5D2
text
#0B0514
muted
#7C7982

Preview Lab

Preview with #1C1DB3

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

Preview Lab → · Contrast checker → · Palette generator →

#1C1DB3 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva