#3F90CB#3F90CB

#3F90CB is a light, moderate cyan. Relative luminance 0.253; OKLCH L 63.0% C 0.119 H 243.5°. Best body text is #000000 at 6.06:1 contrast (WCAG AA passes).

Color values

HEX	#3F90CB
RGB	rgb(63, 144, 203)
HSL	hsl(205, 57%, 52%)
HSV	hsv(205, 69%, 80%)
CMYK	cmyk(69%, 29.1%, 0%, 20.4%)
CIE-LAB	lab(57.38, -5.62, -37.61)
CIE-LCH	lch(57.38, 38.03, 261.50°)
OKLab	oklab(62.95% -0.0531 -0.1062)
OKLCH	oklch(62.95% 0.119 243.5)
XYZ	xyz(22.7985, 25.3126, 60.1726)
Luminance	0.2531 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F90CB #CB7A3F

analogous

#3FCBC0 #3F90CB #3F4ACB

triadic

#3F90CB #CB3F90 #90CB3F

tetradic

#3F90CB #C03FCB #CB7A3F #4ACB3F

square

#3F90CB #C03FCB #CB7A3F #4ACB3F

split-complementary

#3F90CB #CB3F4A #CBC03F

monochromatic

#1F4E71 #2C70A1 #3F90CB #6FACD8 #9FC8E5

Accessibility & contrast

On white

3.46

#3F90CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.06

#3F90CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F90CB

6.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F90CB	#FFFFFF	#000000	##000000
##3F90CB	1.00	3.46	6.06	6.06
#FFFFFF	3.46	1.00	21.00	21.00
#000000	6.06	21.00	1.00	1.00
##000000	6.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7591CE

Deuteranopia (green-blind)

#6284CA

Tritanopia (blue-blind)

#009EA5

Achromatopsia (no color)

#8A8A8A

Design tokens & code

CSS

--color: #3f90cb;
/* rgb */ color: rgb(63, 144, 203);
/* oklch */ color: oklch(63.0% 0.119 243.5);

Tailwind

colors: {
  custom: {
    50: '#84b0db',
    500: '#3f90cb',
    950: '#000000',
  },
}

SCSS

$custom: #3f90cb;
$custom-light: #84b0db;
$custom-dark: #000000;

JSON

{
  "hex": "#3f90cb",
  "rgb": {
    "r": 63,
    "g": 144,
    "b": 203
  },
  "hsl": {
    "h": 205.286,
    "s": 57.377,
    "l": 52.157
  },
  "oklch": {
    "l": 0.62954,
    "c": 0.11876,
    "h": 243.5
  },
  "luminance": 0.25315
}

Semantic roles & 50–950 ramp

primary

#3F90CB

secondary

#D1AE94

accent

#8847E1

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #3F90CB

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

Preview Lab → · Contrast checker → · Palette generator →