#3F7DBC#3F7DBC

#3F7DBC is a mid, moderate cyan. Relative luminance 0.194; OKLCH L 57.8% C 0.117 H 250.9°. Best body text is #000000 at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#3F7DBC
RGB	rgb(63, 125, 188)
HSL	hsl(210, 50%, 49%)
HSV	hsv(210, 66%, 74%)
CMYK	cmyk(66.5%, 33.5%, 0%, 26.3%)
CIE-LAB	lab(51.10, 0.33, -38.95)
CIE-LCH	lch(51.10, 38.95, 270.48°)
OKLab	oklab(57.77% -0.0383 -0.1103)
OKLCH	oklch(57.77% 0.117 250.9)
XYZ	xyz(18.4573, 19.3530, 50.3300)
Luminance	0.1935 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7DBC #BC7E3F

analogous

#3FBCBC #3F7DBC #403FBC

triadic

#3F7DBC #BC3F7D #7DBC3F

tetradic

#3F7DBC #BC3FBC #BC7E3F #3FBC40

square

#3F7DBC #BC3FBC #BC7E3F #3FBC40

split-complementary

#3F7DBC #BC403F #BCBC3F

monochromatic

#204060 #305F8E #3F7DBC #6B9CCD #99BADD

Accessibility & contrast

On white

4.31

#3F7DBC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.87

#3F7DBC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7DBC

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7DBC	#FFFFFF	#000000	##000000
##3F7DBC	1.00	4.31	4.87	4.87
#FFFFFF	4.31	1.00	21.00	21.00
#000000	4.87	21.00	1.00	1.00
##000000	4.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6180BF

Deuteranopia (green-blind)

#5074BB

Tritanopia (blue-blind)

#008C94

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3f7dbc;
/* rgb */ color: rgb(63, 125, 188);
/* oklch */ color: oklch(57.8% 0.117 250.9);

Tailwind

colors: {
  custom: {
    50: '#81a2d0',
    500: '#3f7dbc',
    950: '#000000',
  },
}

SCSS

$custom: #3f7dbc;
$custom-light: #81a2d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7dbc",
  "rgb": {
    "r": 63,
    "g": 125,
    "b": 188
  },
  "hsl": {
    "h": 210.24,
    "s": 49.801,
    "l": 49.216
  },
  "oklch": {
    "l": 0.57772,
    "c": 0.11681,
    "h": 250.9
  },
  "luminance": 0.19355
}

Semantic roles & 50–950 ramp

primary

#3F7DBC

secondary

#C9AC8E

accent

#944ED9

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0F14

muted

#7C7E82

Preview Lab

Preview with #3F7DBC

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

Preview Lab → · Contrast checker → · Palette generator →