#3F88C9#3F88C9

#3F88C9 is a mid, vivid cyan. Relative luminance 0.229; OKLCH L 61.0% C 0.123 H 248.2°. Best body text is #000000 at 5.58:1 contrast (WCAG AA passes).

Color values

HEX	#3F88C9
RGB	rgb(63, 136, 201)
HSL	hsl(208, 56%, 52%)
HSV	hsv(208, 69%, 79%)
CMYK	cmyk(68.7%, 32.3%, 0%, 21.2%)
CIE-LAB	lab(54.95, -1.67, -40.30)
CIE-LCH	lch(54.95, 40.33, 267.63°)
OKLab	oklab(61.01% -0.0457 -0.1141)
OKLCH	oklch(61.01% 0.123 248.2)
XYZ	xyz(21.3927, 22.8799, 58.5358)
Luminance	0.2288 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F88C9 #C9803F

analogous

#3FC9C5 #3F88C9 #3F43C9

triadic

#3F88C9 #C93F88 #88C93F

tetradic

#3F88C9 #C53FC9 #C9803F #43C93F

square

#3F88C9 #C53FC9 #C9803F #43C93F

split-complementary

#3F88C9 #C93F43 #C9C53F

monochromatic

#1F496F #2D699E #3F88C9 #6FA6D6 #9FC3E4

Accessibility & contrast

On white

3.77

#3F88C9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.58

#3F88C9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F88C9

5.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F88C9	#FFFFFF	#000000	##000000
##3F88C9	1.00	3.77	5.58	5.58
#FFFFFF	3.77	1.00	21.00	21.00
#000000	5.58	21.00	1.00	1.00
##000000	5.58	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B8BCC

Deuteranopia (green-blind)

#587EC8

Tritanopia (blue-blind)

#00979F

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #3f88c9;
/* rgb */ color: rgb(63, 136, 201);
/* oklch */ color: oklch(61.0% 0.123 248.2);

Tailwind

colors: {
  custom: {
    50: '#83aad9',
    500: '#3f88c9',
    950: '#000000',
  },
}

SCSS

$custom: #3f88c9;
$custom-light: #83aad9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f88c9",
  "rgb": {
    "r": 63,
    "g": 136,
    "b": 201
  },
  "hsl": {
    "h": 208.261,
    "s": 56.098,
    "l": 51.765
  },
  "oklch": {
    "l": 0.61006,
    "c": 0.12296,
    "h": 248.2
  },
  "luminance": 0.22882
}

Semantic roles & 50–950 ramp

primary

#3F88C9

secondary

#D0B094

accent

#9048DF

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #3F88C9

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

Preview Lab → · Contrast checker → · Palette generator →