#21749B#21749B

#21749B is a mid, moderate cyan. Relative luminance 0.152; OKLCH L 52.9% C 0.098 H 233.9°. Best body text is #FFFFFF at 5.20:1 contrast (WCAG AA passes).

Color values

HEX#21749B
RGBrgb(33, 116, 155)
HSLhsl(199, 65%, 37%)
HSVhsv(199, 79%, 61%)
CMYKcmyk(78.7%, 25.2%, 0%, 39.2%)
CIE-LABlab(45.88, -10.52, -28.01)
CIE-LCHlch(45.88, 29.92, 249.41°)
OKLaboklab(52.87% -0.0576 -0.079)
OKLCHoklch(52.87% 0.098 233.9)
XYZxyz(12.7866, 15.1791, 33.2599)
Luminance0.1518 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#21749B #9B4821
analogous
#219B85 #21749B #21379B
triadic
#21749B #9B2174 #749B21
tetradic
#21749B #85219B #9B4821 #379B21
square
#21749B #85219B #9B4821 #379B21
split-complementary
#21749B #9B2137 #9B8521
monochromatic
#0C2836 #164E69 #21749B #2C9ACD #5AB3DC

Accessibility & contrast

On white

5.20
#21749B on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.04
#21749B on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #21749B
5.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##21749B#FFFFFF#000000##FFFFFF
##21749B1.005.204.045.20
#FFFFFF5.201.0021.001.00
#0000004.0421.001.0021.00
##FFFFFF5.201.0021.001.00

Color blindness preview

Protanopia (red-blind)
#61739D
Deuteranopia (green-blind)
#50689A
Tritanopia (blue-blind)
#007E81
Achromatopsia (no color)
#6D6D6D

Design tokens & code

CSS
--color: #21749b;
/* rgb */ color: rgb(33, 116, 155);
/* oklch */ color: oklch(52.9% 0.098 233.9);
Tailwind
colors: {
  custom: {
    50: '#709cb8',
    500: '#21749b',
    950: '#000000',
  },
}
SCSS
$custom: #21749b;
$custom-light: #709cb8;
$custom-dark: #000000;
JSON
{
  "hex": "#21749b",
  "rgb": {
    "r": 33,
    "g": 116,
    "b": 155
  },
  "hsl": {
    "h": 199.18,
    "s": 64.894,
    "l": 36.863
  },
  "oklch": {
    "l": 0.5287,
    "c": 0.09774,
    "h": 233.9
  },
  "luminance": 0.15181
}

Semantic roles & 50–950 ramp

primary
#21749B
secondary
#C07958
accent
#7640E8
background
#F7F9FB
surface
#EDF2F6
border
#C8CCD0
text
#090E11
muted
#7B7E80

Preview Lab

Preview with #21749B

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

Preview Lab → · Contrast checker → · Palette generator →

#21749B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva