#3990AA#3990AA

#3990AA is a mid, moderate cyan. Relative luminance 0.237; OKLCH L 61.2% C 0.091 H 221.0°. Best body text is #000000 at 5.74:1 contrast (WCAG AA passes).

Color values

HEX	#3990AA
RGB	rgb(57, 144, 170)
HSL	hsl(194, 50%, 45%)
HSV	hsv(194, 66%, 67%)
CMYK	cmyk(66.5%, 15.3%, 0%, 33.3%)
CIE-LAB	lab(55.80, -17.59, -21.33)
CIE-LCH	lch(55.80, 27.65, 230.49°)
OKLab	oklab(61.19% -0.0683 -0.0595)
OKLCH	oklch(61.19% 0.091 221)
XYZ	xyz(18.9134, 23.7166, 41.6034)
Luminance	0.2372 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3990AA #AA5339

analogous

#39AA8C #3990AA #3958AA

triadic

#3990AA #AA3990 #90AA39

tetradic

#3990AA #8C39AA #AA5339 #58AA39

square

#3990AA #8C39AA #AA5339 #58AA39

split-complementary

#3990AA #AA3958 #AA8C39

monochromatic

#1A424E #2A697C #3990AA #59AEC7 #87C4D7

Accessibility & contrast

On white

3.66

#3990AA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.74

#3990AA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3990AA

5.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3990AA	#FFFFFF	#000000	##000000
##3990AA	1.00	3.66	5.74	5.74
#FFFFFF	3.66	1.00	21.00	21.00
#000000	5.74	21.00	1.00	1.00
##000000	5.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#808CAB

Deuteranopia (green-blind)

#7081AA

Tritanopia (blue-blind)

#009898

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #3990aa;
/* rgb */ color: rgb(57, 144, 170);
/* oklch */ color: oklch(61.2% 0.091 221.0);

Tailwind

colors: {
  custom: {
    50: '#7db0c3',
    500: '#3990aa',
    950: '#000000',
  },
}

SCSS

$custom: #3990aa;
$custom-light: #7db0c3;
$custom-dark: #000000;

JSON

{
  "hex": "#3990aa",
  "rgb": {
    "r": 57,
    "g": 144,
    "b": 170
  },
  "hsl": {
    "h": 193.805,
    "s": 49.78,
    "l": 44.51
  },
  "oklch": {
    "l": 0.61189,
    "c": 0.09058,
    "h": 221
  },
  "luminance": 0.23719
}

Semantic roles & 50–950 ramp

primary

#3990AA

secondary

#C18D7E

accent

#6E4ED9

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1012

muted

#7C7F81

Preview Lab

Preview with #3990AA

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

Preview Lab → · Contrast checker → · Palette generator →