#3F7DB4#3F7DB4

#3F7DB4 is a mid, moderate cyan. Relative luminance 0.190; OKLCH L 57.3% C 0.107 H 247.6°. Best body text is #000000 at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#3F7DB4
RGB	rgb(63, 125, 180)
HSL	hsl(208, 48%, 48%)
HSV	hsv(208, 65%, 71%)
CMYK	cmyk(65%, 30.6%, 0%, 29.4%)
CIE-LAB	lab(50.71, -2.44, -34.96)
CIE-LCH	lch(50.71, 35.05, 266.00°)
OKLab	oklab(57.34% -0.0406 -0.0987)
OKLCH	oklch(57.34% 0.107 247.6)
XYZ	xyz(17.6187, 19.0175, 45.9134)
Luminance	0.1902 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7DB4 #B4763F

analogous

#3FB4B0 #3F7DB4 #3F43B4

triadic

#3F7DB4 #B43F7D #7DB43F

tetradic

#3F7DB4 #B03FB4 #B4763F #43B43F

square

#3F7DB4 #B03FB4 #B4763F #43B43F

split-complementary

#3F7DB4 #B43F43 #B4B03F

monochromatic

#1F3E59 #2F5E87 #3F7DB4 #679BCA #94B9DA

Accessibility & contrast

On white

4.37

#3F7DB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.80

#3F7DB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7DB4

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7DB4	#FFFFFF	#000000	##000000
##3F7DB4	1.00	4.37	4.80	4.80
#FFFFFF	4.37	1.00	21.00	21.00
#000000	4.80	21.00	1.00	1.00
##000000	4.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#657FB6

Deuteranopia (green-blind)

#5574B3

Tritanopia (blue-blind)

#008A90

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #3f7db4;
/* rgb */ color: rgb(63, 125, 180);
/* oklch */ color: oklch(57.3% 0.107 247.6);

Tailwind

colors: {
  custom: {
    50: '#80a2ca',
    500: '#3f7db4',
    950: '#000000',
  },
}

SCSS

$custom: #3f7db4;
$custom-light: #80a2ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7db4",
  "rgb": {
    "r": 63,
    "g": 125,
    "b": 180
  },
  "hsl": {
    "h": 208.205,
    "s": 48.148,
    "l": 47.647
  },
  "oklch": {
    "l": 0.57338,
    "c": 0.10676,
    "h": 247.6
  },
  "luminance": 0.19019
}

Semantic roles & 50–950 ramp

primary

#3F7DB4

secondary

#C5A68A

accent

#9050D8

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0F13

muted

#7C7E82

Preview Lab

Preview with #3F7DB4

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

Preview Lab → · Contrast checker → · Palette generator →