#166AA1#166AA1

#166AA1 is a mid, moderate cyan. Relative luminance 0.131; OKLCH L 50.5% C 0.115 H 243.9°. Best body text is #FFFFFF at 5.82:1 contrast (WCAG AA passes).

Color values

HEX	#166AA1
RGB	rgb(22, 106, 161)
HSL	hsl(204, 76%, 36%)
HSV	hsv(204, 86%, 63%)
CMYK	cmyk(86.3%, 34.2%, 0%, 36.9%)
CIE-LAB	lab(42.84, -3.37, -36.34)
CIE-LCH	lch(42.84, 36.50, 264.70°)
OKLab	oklab(50.49% -0.0507 -0.1034)
OKLCH	oklch(50.49% 0.115 243.9)
XYZ	xyz(11.9154, 13.0503, 35.6023)
Luminance	0.1305 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#166AA1 #A14D16

analogous

#16A192 #166AA1 #1624A1

triadic

#166AA1 #A1166A #6AA116

tetradic

#166AA1 #9216A1 #A14D16 #24A116

square

#166AA1 #9216A1 #A14D16 #24A116

split-complementary

#166AA1 #A11624 #A19216

monochromatic

#072335 #0F476B #166AA1 #1D8DD7 #4BA9E6

Accessibility & contrast

On white

5.82

#166AA1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.61

#166AA1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #166AA1

5.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##166AA1	#FFFFFF	#000000	##FFFFFF
##166AA1	1.00	5.82	3.61	5.82
#FFFFFF	5.82	1.00	21.00	1.00
#000000	3.61	21.00	1.00	21.00
##FFFFFF	5.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#506CA3

Deuteranopia (green-blind)

#3C60A0

Tritanopia (blue-blind)

#00777E

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #166aa1;
/* rgb */ color: rgb(22, 106, 161);
/* oklch */ color: oklch(50.5% 0.115 243.9);

Tailwind

colors: {
  custom: {
    50: '#6e94bd',
    500: '#166aa1',
    950: '#000000',
  },
}

SCSS

$custom: #166aa1;
$custom-light: #6e94bd;
$custom-dark: #000000;

JSON

{
  "hex": "#166aa1",
  "rgb": {
    "r": 22,
    "g": 106,
    "b": 161
  },
  "hsl": {
    "h": 203.741,
    "s": 75.956,
    "l": 35.882
  },
  "oklch": {
    "l": 0.50492,
    "c": 0.11515,
    "h": 243.9
  },
  "luminance": 0.13052
}

Semantic roles & 50–950 ramp

primary

#166AA1

secondary

#C87C4B

accent

#8035F3

background

#F7F9FB

surface

#EDF1F6

border

#C8CBD0

text

#080D12

muted

#7B7E81

Preview Lab

Preview with #166AA1

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

Preview Lab → · Contrast checker → · Palette generator →