#3F7CBB#3F7CBB

#3F7CBB is a mid, moderate cyan. Relative luminance 0.191; OKLCH L 57.5% C 0.116 H 251.2°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#3F7CBB
RGB	rgb(63, 124, 187)
HSL	hsl(210, 50%, 49%)
HSV	hsv(210, 66%, 73%)
CMYK	cmyk(66.3%, 33.7%, 0%, 26.7%)
CIE-LAB	lab(50.76, 0.58, -38.92)
CIE-LCH	lch(50.76, 38.92, 270.85°)
OKLab	oklab(57.49% -0.0375 -0.1103)
OKLCH	oklch(57.49% 0.116 251.2)
XYZ	xyz(18.2239, 19.0581, 49.7222)
Luminance	0.1906 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7CBB #BB7E3F

analogous

#3FBABB #3F7CBB #403FBB

triadic

#3F7CBB #BB3F7C #7CBB3F

tetradic

#3F7CBB #BB3FBA #BB7E3F #3FBB40

square

#3F7CBB #BB3FBA #BB7E3F #3FBB40

split-complementary

#3F7CBB #BB403F #BABB3F

monochromatic

#203F5F #305E8D #3F7CBB #6A9BCD #98BADC

Accessibility & contrast

On white

4.36

#3F7CBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.81

#3F7CBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7CBB

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7CBB	#FFFFFF	#000000	##000000
##3F7CBB	1.00	4.36	4.81	4.81
#FFFFFF	4.36	1.00	21.00	21.00
#000000	4.81	21.00	1.00	1.00
##000000	4.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#607FBE

Deuteranopia (green-blind)

#4F73BA

Tritanopia (blue-blind)

#008B93

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #3f7cbb;
/* rgb */ color: rgb(63, 124, 187);
/* oklch */ color: oklch(57.5% 0.116 251.2);

Tailwind

colors: {
  custom: {
    50: '#81a1d0',
    500: '#3f7cbb',
    950: '#000000',
  },
}

SCSS

$custom: #3f7cbb;
$custom-light: #81a1d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7cbb",
  "rgb": {
    "r": 63,
    "g": 124,
    "b": 187
  },
  "hsl": {
    "h": 210.484,
    "s": 49.6,
    "l": 49.02
  },
  "oklch": {
    "l": 0.57487,
    "c": 0.11648,
    "h": 251.2
  },
  "luminance": 0.1906
}

Semantic roles & 50–950 ramp

primary

#3F7CBB

secondary

#C8AB8E

accent

#954FD9

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3F7CBB

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

Preview Lab → · Contrast checker → · Palette generator →