#3F709B#3F709B

#3F709B is a mid, moderate cyan. Relative luminance 0.150; OKLCH L 53.0% C 0.087 H 246.8°. Best body text is #FFFFFF at 5.25:1 contrast (WCAG AA passes).

Color values

HEX	#3F709B
RGB	rgb(63, 112, 155)
HSL	hsl(208, 42%, 43%)
HSV	hsv(208, 59%, 61%)
CMYK	cmyk(59.4%, 27.7%, 0%, 39.2%)
CIE-LAB	lab(45.65, -3.20, -28.29)
CIE-LCH	lch(45.65, 28.47, 263.55°)
OKLab	oklab(52.97% -0.0341 -0.0795)
OKLCH	oklch(52.97% 0.087 246.8)
XYZ	xyz(13.7583, 15.0104, 33.1762)
Luminance	0.1501 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F709B #9B6A3F

analogous

#3F9B98 #3F709B #3F429B

triadic

#3F709B #9B3F70 #709B3F

tetradic

#3F709B #983F9B #9B6A3F #429B3F

square

#3F709B #983F9B #9B6A3F #429B3F

split-complementary

#3F709B #9B3F42 #9B983F

monochromatic

#1C3144 #2D516F #3F709B #5B8FBC #86ADCE

Accessibility & contrast

On white

5.25

#3F709B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.00

#3F709B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F709B

5.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F709B	#FFFFFF	#000000	##FFFFFF
##3F709B	1.00	5.25	4.00	5.25
#FFFFFF	5.25	1.00	21.00	1.00
#000000	4.00	21.00	1.00	21.00
##FFFFFF	5.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E719D

Deuteranopia (green-blind)

#51689A

Tritanopia (blue-blind)

#007A7F

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #3f709b;
/* rgb */ color: rgb(63, 112, 155);
/* oklch */ color: oklch(53.0% 0.087 246.8);

Tailwind

colors: {
  custom: {
    50: '#7c98b8',
    500: '#3f709b',
    950: '#000000',
  },
}

SCSS

$custom: #3f709b;
$custom-light: #7c98b8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f709b",
  "rgb": {
    "r": 63,
    "g": 112,
    "b": 155
  },
  "hsl": {
    "h": 208.043,
    "s": 42.202,
    "l": 42.745
  },
  "oklch": {
    "l": 0.52968,
    "c": 0.08651,
    "h": 246.8
  },
  "luminance": 0.15012
}

Semantic roles & 50–950 ramp

primary

#3F709B

secondary

#B8997D

accent

#9056D2

background

#F7F9FB

surface

#EEF2F6

border

#C9CCD0

text

#0A0D11

muted

#7C7E80

Preview Lab

Preview with #3F709B

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

Preview Lab → · Contrast checker → · Palette generator →