#3F80B2#3F80B2

#3F80B2 is a mid, moderate cyan. Relative luminance 0.197; OKLCH L 57.9% C 0.102 H 244.1°. Best body text is #000000 at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#3F80B2
RGB	rgb(63, 128, 178)
HSL	hsl(206, 48%, 47%)
HSV	hsv(206, 65%, 70%)
CMYK	cmyk(64.6%, 28.1%, 0%, 30.2%)
CIE-LAB	lab(51.51, -4.90, -32.56)
CIE-LCH	lch(51.51, 32.93, 261.45°)
OKLab	oklab(57.94% -0.0445 -0.0917)
OKLCH	oklch(57.94% 0.102 244.1)
XYZ	xyz(17.8019, 19.7077, 44.9766)
Luminance	0.1971 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F80B2 #B2713F

analogous

#3FB2AB #3F80B2 #3F46B2

triadic

#3F80B2 #B23F80 #80B23F

tetradic

#3F80B2 #AB3FB2 #B2713F #46B23F

square

#3F80B2 #AB3FB2 #B2713F #46B23F

split-complementary

#3F80B2 #B23F46 #B2AB3F

monochromatic

#1F3F58 #2F5F85 #3F80B2 #669EC9 #93BAD9

Accessibility & contrast

On white

4.25

#3F80B2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.94

#3F80B2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F80B2

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F80B2	#FFFFFF	#000000	##000000
##3F80B2	1.00	4.25	4.94	4.94
#FFFFFF	4.25	1.00	21.00	21.00
#000000	4.94	21.00	1.00	1.00
##000000	4.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A81B4

Deuteranopia (green-blind)

#5A76B1

Tritanopia (blue-blind)

#008C91

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3f80b2;
/* rgb */ color: rgb(63, 128, 178);
/* oklch */ color: oklch(57.9% 0.102 244.1);

Tailwind

colors: {
  custom: {
    50: '#7fa4c9',
    500: '#3f80b2',
    950: '#000000',
  },
}

SCSS

$custom: #3f80b2;
$custom-light: #7fa4c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f80b2",
  "rgb": {
    "r": 63,
    "g": 128,
    "b": 178
  },
  "hsl": {
    "h": 206.087,
    "s": 47.718,
    "l": 47.255
  },
  "oklch": {
    "l": 0.57936,
    "c": 0.10195,
    "h": 244.1
  },
  "luminance": 0.19709
}

Semantic roles & 50–950 ramp

primary

#3F80B2

secondary

#C4A389

accent

#8B50D7

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3F80B2

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

Preview Lab → · Contrast checker → · Palette generator →