#3F90B4#3F90B4

#3F90B4 is a mid, moderate cyan. Relative luminance 0.243; OKLCH L 61.8% C 0.095 H 230.2°. Best body text is #000000 at 5.86:1 contrast (WCAG AA passes).

Color values

HEX	#3F90B4
RGB	rgb(63, 144, 180)
HSL	hsl(198, 48%, 48%)
HSV	hsv(198, 65%, 71%)
CMYK	cmyk(65%, 20%, 0%, 29.4%)
CIE-LAB	lab(56.38, -13.33, -26.13)
CIE-LCH	lch(56.38, 29.33, 242.97°)
OKLab	oklab(61.84% -0.0609 -0.0731)
OKLCH	oklch(61.84% 0.095 230.2)
XYZ	xyz(20.2581, 24.2965, 46.7932)
Luminance	0.2430 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F90B4 #B4633F

analogous

#3FB49E #3F90B4 #3F55B4

triadic

#3F90B4 #B43F90 #90B43F

tetradic

#3F90B4 #9E3FB4 #B4633F #55B43F

square

#3F90B4 #9E3FB4 #B4633F #55B43F

split-complementary

#3F90B4 #B43F55 #B49E3F

monochromatic

#1F4759 #2F6C87 #3F90B4 #67ABCA #94C4DA

Accessibility & contrast

On white

3.58

#3F90B4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.86

#3F90B4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F90B4

5.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F90B4	#FFFFFF	#000000	##000000
##3F90B4	1.00	3.58	5.86	5.86
#FFFFFF	3.58	1.00	21.00	21.00
#000000	5.86	21.00	1.00	1.00
##000000	5.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7E8EB6

Deuteranopia (green-blind)

#6D82B4

Tritanopia (blue-blind)

#009A9C

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #3f90b4;
/* rgb */ color: rgb(63, 144, 180);
/* oklch */ color: oklch(61.8% 0.095 230.2);

Tailwind

colors: {
  custom: {
    50: '#80b0ca',
    500: '#3f90b4',
    950: '#000000',
  },
}

SCSS

$custom: #3f90b4;
$custom-light: #80b0ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3f90b4",
  "rgb": {
    "r": 63,
    "g": 144,
    "b": 180
  },
  "hsl": {
    "h": 198.462,
    "s": 48.148,
    "l": 47.647
  },
  "oklch": {
    "l": 0.61836,
    "c": 0.09514,
    "h": 230.2
  },
  "luminance": 0.24299
}

Semantic roles & 50–950 ramp

primary

#3F90B4

secondary

#C59C8A

accent

#7A50D8

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3F90B4

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

Preview Lab → · Contrast checker → · Palette generator →