#3F799B#3F799B

#3F799B is a mid, moderate cyan. Relative luminance 0.171; OKLCH L 55.1% C 0.081 H 236.5°. Best body text is #FFFFFF at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#3F799B
RGB	rgb(63, 121, 155)
HSL	hsl(202, 42%, 43%)
HSV	hsv(202, 59%, 61%)
CMYK	cmyk(59.4%, 21.9%, 0%, 39.2%)
CIE-LAB	lab(48.38, -8.50, -24.05)
CIE-LCH	lch(48.38, 25.51, 250.53°)
OKLab	oklab(55.13% -0.0445 -0.0672)
OKLCH	oklch(55.13% 0.081 236.5)
XYZ	xyz(14.8014, 17.0967, 33.5240)
Luminance	0.1710 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F799B #9B613F

analogous

#3F9B8F #3F799B #3F4B9B

triadic

#3F799B #9B3F79 #799B3F

tetradic

#3F799B #8F3F9B #9B613F #4B9B3F

square

#3F799B #8F3F9B #9B613F #4B9B3F

split-complementary

#3F799B #9B3F4B #9B8F3F

monochromatic

#1C3544 #2D576F #3F799B #5B98BC #86B4CE

Accessibility & contrast

On white

4.75

#3F799B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.42

#3F799B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F799B

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F799B	#FFFFFF	#000000	##FFFFFF
##3F799B	1.00	4.75	4.42	4.75
#FFFFFF	4.75	1.00	21.00	1.00
#000000	4.42	21.00	1.00	21.00
##FFFFFF	4.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#69789D

Deuteranopia (green-blind)

#5C6F9A

Tritanopia (blue-blind)

#008284

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3f799b;
/* rgb */ color: rgb(63, 121, 155);
/* oklch */ color: oklch(55.1% 0.081 236.5);

Tailwind

colors: {
  custom: {
    50: '#7c9fb8',
    500: '#3f799b',
    950: '#000000',
  },
}

SCSS

$custom: #3f799b;
$custom-light: #7c9fb8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f799b",
  "rgb": {
    "r": 63,
    "g": 121,
    "b": 155
  },
  "hsl": {
    "h": 202.174,
    "s": 42.202,
    "l": 42.745
  },
  "oklch": {
    "l": 0.55129,
    "c": 0.08066,
    "h": 236.5
  },
  "luminance": 0.17098
}

Semantic roles & 50–950 ramp

primary

#3F799B

secondary

#B8937D

accent

#8456D2

background

#F7F9FB

surface

#EEF2F6

border

#C9CCD0

text

#0A0E11

muted

#7C7E80

Preview Lab

Preview with #3F799B

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

Preview Lab → · Contrast checker → · Palette generator →