#2178A1#2178A1

#2178A1 is a mid, moderate cyan. Relative luminance 0.163; OKLCH L 54.2% C 0.101 H 234.2°. Best body text is #FFFFFF at 4.92:1 contrast (WCAG AA passes).

Color values

HEX	#2178A1
RGB	rgb(33, 120, 161)
HSL	hsl(199, 66%, 38%)
HSV	hsv(199, 80%, 63%)
CMYK	cmyk(79.5%, 25.5%, 0%, 36.9%)
CIE-LAB	lab(47.40, -10.65, -29.16)
CIE-LCH	lch(47.40, 31.04, 249.93°)
OKLab	oklab(54.17% -0.0594 -0.0822)
OKLCH	oklch(54.17% 0.101 234.2)
XYZ	xyz(13.7741, 16.3278, 36.1369)
Luminance	0.1633 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2178A1 #A14A21

analogous

#21A18A #2178A1 #2138A1

triadic

#2178A1 #A12178 #78A121

tetradic

#2178A1 #8A21A1 #A14A21 #38A121

square

#2178A1 #8A21A1 #A14A21 #38A121

split-complementary

#2178A1 #A12138 #A18A21

monochromatic

#0C2C3B #17526E #2178A1 #2C9ED4 #5EB5DE

Accessibility & contrast

On white

4.92

#2178A1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.27

#2178A1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2178A1

4.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2178A1	#FFFFFF	#000000	##FFFFFF
##2178A1	1.00	4.92	4.27	4.92
#FFFFFF	4.92	1.00	21.00	1.00
#000000	4.27	21.00	1.00	21.00
##FFFFFF	4.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6477A3

Deuteranopia (green-blind)

#536BA0

Tritanopia (blue-blind)

#008386

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #2178a1;
/* rgb */ color: rgb(33, 120, 161);
/* oklch */ color: oklch(54.2% 0.101 234.2);

Tailwind

colors: {
  custom: {
    50: '#719ebd',
    500: '#2178a1',
    950: '#000000',
  },
}

SCSS

$custom: #2178a1;
$custom-light: #719ebd;
$custom-dark: #000000;

JSON

{
  "hex": "#2178a1",
  "rgb": {
    "r": 33,
    "g": 120,
    "b": 161
  },
  "hsl": {
    "h": 199.219,
    "s": 65.979,
    "l": 38.039
  },
  "oklch": {
    "l": 0.54174,
    "c": 0.10144,
    "h": 234.2
  },
  "luminance": 0.16329
}

Semantic roles & 50–950 ramp

primary

#2178A1

secondary

#C37C5B

accent

#753FE9

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090E12

muted

#7B7E81

Preview Lab

Preview with #2178A1

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

Preview Lab → · Contrast checker → · Palette generator →