#3F699B#3F699B

#3F699B is a mid, moderate cyan. Relative luminance 0.135; OKLCH L 51.3% C 0.093 H 253.7°. Best body text is #FFFFFF at 5.67:1 contrast (WCAG AA passes).

Color values

HEX	#3F699B
RGB	rgb(63, 105, 155)
HSL	hsl(213, 42%, 43%)
HSV	hsv(213, 59%, 61%)
CMYK	cmyk(59.4%, 32.3%, 0%, 39.2%)
CIE-LAB	lab(43.54, 1.06, -31.58)
CIE-LCH	lch(43.54, 31.60, 271.93°)
OKLab	oklab(51.32% -0.026 -0.0891)
OKLCH	oklch(51.32% 0.093 253.7)
XYZ	xyz(13.0158, 13.5253, 32.9287)
Luminance	0.1353 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F699B #9B713F

analogous

#3F979B #3F699B #433F9B

triadic

#3F699B #9B3F69 #699B3F

tetradic

#3F699B #9B3F97 #9B713F #3F9B43

square

#3F699B #9B3F97 #9B713F #3F9B43

split-complementary

#3F699B #9B433F #979B3F

monochromatic

#1C2E44 #2D4C6F #3F699B #5B87BC #86A7CE

Accessibility & contrast

On white

5.67

#3F699B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.71

#3F699B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F699B

5.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F699B	#FFFFFF	#000000	##FFFFFF
##3F699B	1.00	5.67	3.71	5.67
#FFFFFF	5.67	1.00	21.00	1.00
#000000	3.71	21.00	1.00	21.00
##FFFFFF	5.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#546C9D

Deuteranopia (green-blind)

#48639A

Tritanopia (blue-blind)

#00747B

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3f699b;
/* rgb */ color: rgb(63, 105, 155);
/* oklch */ color: oklch(51.3% 0.093 253.7);

Tailwind

colors: {
  custom: {
    50: '#7c93b8',
    500: '#3f699b',
    950: '#000000',
  },
}

SCSS

$custom: #3f699b;
$custom-light: #7c93b8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f699b",
  "rgb": {
    "r": 63,
    "g": 105,
    "b": 155
  },
  "hsl": {
    "h": 212.609,
    "s": 42.202,
    "l": 42.745
  },
  "oklch": {
    "l": 0.51315,
    "c": 0.0928,
    "h": 253.7
  },
  "luminance": 0.13526
}

Semantic roles & 50–950 ramp

primary

#3F699B

secondary

#B89D7D

accent

#9956D2

background

#F7F9FB

surface

#EEF1F6

border

#C9CBD0

text

#0A0D11

muted

#7C7E80

Preview Lab

Preview with #3F699B

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

Preview Lab → · Contrast checker → · Palette generator →