#3F7CB0#3F7CB0

#3F7CB0 is a mid, moderate cyan. Relative luminance 0.186; OKLCH L 56.9% C 0.103 H 246.6°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#3F7CB0
RGB	rgb(63, 124, 176)
HSL	hsl(208, 47%, 47%)
HSV	hsv(208, 64%, 69%)
CMYK	cmyk(64.2%, 29.5%, 0%, 31%)
CIE-LAB	lab(50.22, -3.22, -33.41)
CIE-LCH	lch(50.22, 33.57, 264.49°)
OKLab	oklab(56.89% -0.0408 -0.0942)
OKLCH	oklch(56.89% 0.103 246.6)
XYZ	xyz(17.0911, 18.6050, 43.7563)
Luminance	0.1861 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7CB0 #B0733F

analogous

#3FB0AC #3F7CB0 #3F44B0

triadic

#3F7CB0 #B03F7C #7CB03F

tetradic

#3F7CB0 #AC3FB0 #B0733F #44B03F

square

#3F7CB0 #AC3FB0 #B0733F #44B03F

split-complementary

#3F7CB0 #B03F44 #B0AC3F

monochromatic

#1F3C56 #2F5C83 #3F7CB0 #659AC8 #92B7D8

Accessibility & contrast

On white

4.45

#3F7CB0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.72

#3F7CB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7CB0

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7CB0	#FFFFFF	#000000	##000000
##3F7CB0	1.00	4.45	4.72	4.72
#FFFFFF	4.45	1.00	21.00	21.00
#000000	4.72	21.00	1.00	1.00
##000000	4.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#657EB2

Deuteranopia (green-blind)

#5673AF

Tritanopia (blue-blind)

#00888E

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3f7cb0;
/* rgb */ color: rgb(63, 124, 176);
/* oklch */ color: oklch(56.9% 0.103 246.6);

Tailwind

colors: {
  custom: {
    50: '#7fa1c8',
    500: '#3f7cb0',
    950: '#000000',
  },
}

SCSS

$custom: #3f7cb0;
$custom-light: #7fa1c8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7cb0",
  "rgb": {
    "r": 63,
    "g": 124,
    "b": 176
  },
  "hsl": {
    "h": 207.611,
    "s": 47.28,
    "l": 46.863
  },
  "oklch": {
    "l": 0.56893,
    "c": 0.10269,
    "h": 246.6
  },
  "luminance": 0.18607
}

Semantic roles & 50–950 ramp

primary

#3F7CB0

secondary

#C3A388

accent

#8F51D7

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0F13

muted

#7C7E82

Preview Lab

Preview with #3F7CB0

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

Preview Lab → · Contrast checker → · Palette generator →