#3F8BB9#3F8BB9

#3F8BB9 is a mid, moderate cyan. Relative luminance 0.230; OKLCH L 60.9% C 0.102 H 238.3°. Best body text is #000000 at 5.61:1 contrast (WCAG AA passes).

Color values

HEX	#3F8BB9
RGB	rgb(63, 139, 185)
HSL	hsl(203, 49%, 49%)
HSV	hsv(203, 66%, 73%)
CMYK	cmyk(65.9%, 24.9%, 0%, 27.5%)
CIE-LAB	lab(55.10, -8.87, -30.97)
CIE-LCH	lch(55.10, 32.22, 254.01°)
OKLab	oklab(60.88% -0.0538 -0.0871)
OKLCH	oklch(60.88% 0.102 238.3)
XYZ	xyz(20.0361, 23.0227, 49.2774)
Luminance	0.2303 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F8BB9 #B96D3F

analogous

#3FB9AA #3F8BB9 #3F4EB9

triadic

#3F8BB9 #B93F8B #8BB93F

tetradic

#3F8BB9 #AA3FB9 #B96D3F #4EB93F

square

#3F8BB9 #AA3FB9 #B96D3F #4EB93F

split-complementary

#3F8BB9 #B93F4E #B9AA3F

monochromatic

#20465E #2F698B #3F8BB9 #69A7CC #97C2DC

Accessibility & contrast

On white

3.75

#3F8BB9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.61

#3F8BB9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F8BB9

5.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F8BB9	#FFFFFF	#000000	##000000
##3F8BB9	1.00	3.75	5.61	5.61
#FFFFFF	3.75	1.00	21.00	21.00
#000000	5.61	21.00	1.00	1.00
##000000	5.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#768BBB

Deuteranopia (green-blind)

#657FB8

Tritanopia (blue-blind)

#00979B

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #3f8bb9;
/* rgb */ color: rgb(63, 139, 185);
/* oklch */ color: oklch(60.9% 0.102 238.3);

Tailwind

colors: {
  custom: {
    50: '#81acce',
    500: '#3f8bb9',
    950: '#000000',
  },
}

SCSS

$custom: #3f8bb9;
$custom-light: #81acce;
$custom-dark: #000000;

JSON

{
  "hex": "#3f8bb9",
  "rgb": {
    "r": 63,
    "g": 139,
    "b": 185
  },
  "hsl": {
    "h": 202.623,
    "s": 49.194,
    "l": 48.627
  },
  "oklch": {
    "l": 0.60881,
    "c": 0.10235,
    "h": 238.3
  },
  "luminance": 0.23025
}

Semantic roles & 50–950 ramp

primary

#3F8BB9

secondary

#C7A38D

accent

#834FD9

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3F8BB9

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

Preview Lab → · Contrast checker → · Palette generator →