#3F839B#3F839B

#3F839B is a mid, moderate cyan. Relative luminance 0.197; OKLCH L 57.6% C 0.078 H 223.8°. Best body text is #000000 at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#3F839B
RGB	rgb(63, 131, 155)
HSL	hsl(196, 42%, 43%)
HSV	hsv(196, 59%, 61%)
CMYK	cmyk(59.4%, 15.5%, 0%, 39.2%)
CIE-LAB	lab(51.44, -14.17, -19.34)
CIE-LCH	lch(51.44, 23.97, 233.77°)
OKLab	oklab(57.57% -0.0561 -0.0538)
OKLCH	oklch(57.57% 0.078 223.8)
XYZ	xyz(16.0803, 19.6544, 33.9502)
Luminance	0.1966 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F839B #9B573F

analogous

#3F9B85 #3F839B #3F559B

triadic

#3F839B #9B3F83 #839B3F

tetradic

#3F839B #853F9B #9B573F #559B3F

square

#3F839B #853F9B #9B573F #559B3F

split-complementary

#3F839B #9B3F55 #9B853F

monochromatic

#1C3944 #2D5E6F #3F839B #5BA3BC #86BBCE

Accessibility & contrast

On white

4.26

#3F839B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.93

#3F839B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F839B

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F839B	#FFFFFF	#000000	##000000
##3F839B	1.00	4.26	4.93	4.93
#FFFFFF	4.26	1.00	21.00	21.00
#000000	4.93	21.00	1.00	1.00
##000000	4.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#75809C

Deuteranopia (green-blind)

#68769B

Tritanopia (blue-blind)

#008A8B

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3f839b;
/* rgb */ color: rgb(63, 131, 155);
/* oklch */ color: oklch(57.6% 0.078 223.8);

Tailwind

colors: {
  custom: {
    50: '#7da7b8',
    500: '#3f839b',
    950: '#000000',
  },
}

SCSS

$custom: #3f839b;
$custom-light: #7da7b8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f839b",
  "rgb": {
    "r": 63,
    "g": 131,
    "b": 155
  },
  "hsl": {
    "h": 195.652,
    "s": 42.202,
    "l": 42.745
  },
  "oklch": {
    "l": 0.57567,
    "c": 0.0777,
    "h": 223.8
  },
  "luminance": 0.19656
}

Semantic roles & 50–950 ramp

primary

#3F839B

secondary

#B88D7D

accent

#7656D2

background

#F7FAFB

surface

#EEF4F6

border

#C9CED0

text

#0A0F11

muted

#7C7F80

Preview Lab

Preview with #3F839B

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

Preview Lab → · Contrast checker → · Palette generator →