#3F7EB3#3F7EB3

#3F7EB3 is a mid, moderate cyan. Relative luminance 0.192; OKLCH L 57.5% C 0.105 H 246.4°. Best body text is #000000 at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#3F7EB3
RGB	rgb(63, 126, 179)
HSL	hsl(207, 48%, 47%)
HSV	hsv(207, 65%, 70%)
CMYK	cmyk(64.8%, 29.6%, 0%, 29.8%)
CIE-LAB	lab(50.96, -3.38, -34.00)
CIE-LCH	lch(50.96, 34.16, 264.32°)
OKLab	oklab(57.52% -0.042 -0.0959)
OKLCH	oklch(57.52% 0.105 246.4)
XYZ	xyz(17.6444, 19.2314, 45.4212)
Luminance	0.1923 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7EB3 #B3743F

analogous

#3FB3AE #3F7EB3 #3F44B3

triadic

#3F7EB3 #B33F7E #7EB33F

tetradic

#3F7EB3 #AE3FB3 #B3743F #44B33F

square

#3F7EB3 #AE3FB3 #B3743F #44B33F

split-complementary

#3F7EB3 #B33F44 #B3AE3F

monochromatic

#1F3E58 #2F5E86 #3F7EB3 #669CC9 #93B9D9

Accessibility & contrast

On white

4.33

#3F7EB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.85

#3F7EB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7EB3

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7EB3	#FFFFFF	#000000	##000000
##3F7EB3	1.00	4.33	4.85	4.85
#FFFFFF	4.33	1.00	21.00	21.00
#000000	4.85	21.00	1.00	1.00
##000000	4.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6780B5

Deuteranopia (green-blind)

#5774B2

Tritanopia (blue-blind)

#008B91

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #3f7eb3;
/* rgb */ color: rgb(63, 126, 179);
/* oklch */ color: oklch(57.5% 0.105 246.4);

Tailwind

colors: {
  custom: {
    50: '#80a3ca',
    500: '#3f7eb3',
    950: '#000000',
  },
}

SCSS

$custom: #3f7eb3;
$custom-light: #80a3ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7eb3",
  "rgb": {
    "r": 63,
    "g": 126,
    "b": 179
  },
  "hsl": {
    "h": 207.414,
    "s": 47.934,
    "l": 47.451
  },
  "oklch": {
    "l": 0.57518,
    "c": 0.1047,
    "h": 246.4
  },
  "luminance": 0.19233
}

Semantic roles & 50–950 ramp

primary

#3F7EB3

secondary

#C4A489

accent

#8E50D8

background

#F8FAFC

surface

#EFF3F8

border

#CACDD1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3F7EB3

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

Preview Lab → · Contrast checker → · Palette generator →