#3F669B#3F669B

#3F669B is a mid, moderate cyan. Relative luminance 0.129; OKLCH L 50.6% C 0.096 H 256.4°. Best body text is #FFFFFF at 5.86:1 contrast (WCAG AA passes).

Color values

HEX	#3F669B
RGB	rgb(63, 102, 155)
HSL	hsl(215, 42%, 43%)
HSV	hsv(215, 59%, 61%)
CMYK	cmyk(59.4%, 34.2%, 0%, 39.2%)
CIE-LAB	lab(42.65, 2.92, -32.99)
CIE-LCH	lch(42.65, 33.12, 275.06°)
OKLab	oklab(50.62% -0.0225 -0.0932)
OKLCH	oklch(50.62% 0.096 256.4)
XYZ	xyz(12.7156, 12.9250, 32.8287)
Luminance	0.1293 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F669B #9B743F

analogous

#3F949B #3F669B #463F9B

triadic

#3F669B #9B3F66 #669B3F

tetradic

#3F669B #9B3F94 #9B743F #3F9B46

square

#3F669B #9B3F94 #9B743F #3F9B46

split-complementary

#3F669B #9B463F #949B3F

monochromatic

#1C2D44 #2D496F #3F669B #5B84BC #86A5CE

Accessibility & contrast

On white

5.86

#3F669B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#3F669B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F669B

5.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F669B	#FFFFFF	#000000	##FFFFFF
##3F669B	1.00	5.86	3.59	5.86
#FFFFFF	5.86	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#50699D

Deuteranopia (green-blind)

#44619A

Tritanopia (blue-blind)

#007279

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3f669b;
/* rgb */ color: rgb(63, 102, 155);
/* oklch */ color: oklch(50.6% 0.096 256.4);

Tailwind

colors: {
  custom: {
    50: '#7c91b9',
    500: '#3f669b',
    950: '#000000',
  },
}

SCSS

$custom: #3f669b;
$custom-light: #7c91b9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f669b",
  "rgb": {
    "r": 63,
    "g": 102,
    "b": 155
  },
  "hsl": {
    "h": 214.565,
    "s": 42.202,
    "l": 42.745
  },
  "oklch": {
    "l": 0.50615,
    "c": 0.09588,
    "h": 256.4
  },
  "luminance": 0.12926
}

Semantic roles & 50–950 ramp

primary

#3F669B

secondary

#B89F7D

accent

#9D56D2

background

#F7F8FB

surface

#EEF0F6

border

#C9CBD0

text

#0A0C11

muted

#7C7D80

Preview Lab

Preview with #3F669B

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

Preview Lab → · Contrast checker → · Palette generator →