#3F7FCF#3F7FCF

#3F7FCF is a mid, vivid cyan. Relative luminance 0.207; OKLCH L 59.3% C 0.139 H 255.3°. Best body text is #000000 at 5.15:1 contrast (WCAG AA passes).

Color values

HEX	#3F7FCF
RGB	rgb(63, 127, 207)
HSL	hsl(213, 60%, 53%)
HSV	hsv(213, 70%, 81%)
CMYK	cmyk(69.6%, 38.6%, 0%, 18.8%)
CIE-LAB	lab(52.66, 5.82, -47.32)
CIE-LCH	lch(52.66, 47.67, 277.02°)
OKLab	oklab(59.32% -0.0354 -0.1348)
OKLCH	oklch(59.32% 0.139 255.3)
XYZ	xyz(20.8976, 20.7383, 61.9209)
Luminance	0.2074 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7FCF #CF8F3F

analogous

#3FC7CF #3F7FCF #473FCF

triadic

#3F7FCF #CF3F7F #7FCF3F

tetradic

#3F7FCF #CF3FC7 #CF8F3F #3FCF47

square

#3F7FCF #CF3FC7 #CF8F3F #3FCF47

split-complementary

#3F7FCF #CF473F #C7CF3F

monochromatic

#1E4576 #2A61A7 #3F7FCF #70A0DB #A1C0E7

Accessibility & contrast

On white

4.08

#3F7FCF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.15

#3F7FCF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7FCF

5.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7FCF	#FFFFFF	#000000	##000000
##3F7FCF	1.00	4.08	5.15	5.15
#FFFFFF	4.08	1.00	21.00	21.00
#000000	5.15	21.00	1.00	1.00
##000000	5.15	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A85D2

Deuteranopia (green-blind)

#4578CD

Tritanopia (blue-blind)

#00929D

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #3f7fcf;
/* rgb */ color: rgb(63, 127, 207);
/* oklch */ color: oklch(59.3% 0.139 255.3);

Tailwind

colors: {
  custom: {
    50: '#84a3de',
    500: '#3f7fcf',
    950: '#000000',
  },
}

SCSS

$custom: #3f7fcf;
$custom-light: #84a3de;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7fcf",
  "rgb": {
    "r": 63,
    "g": 127,
    "b": 207
  },
  "hsl": {
    "h": 213.333,
    "s": 60,
    "l": 52.941
  },
  "oklch": {
    "l": 0.59317,
    "c": 0.13935,
    "h": 255.3
  },
  "luminance": 0.2074
}

Semantic roles & 50–950 ramp

primary

#3F7FCF

secondary

#D4B896

accent

#9D45E3

background

#F8FAFD

surface

#F0F3FB

border

#CBCDD4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3F7FCF

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

Preview Lab → · Contrast checker → · Palette generator →