#3F7CDC#3F7CDC

#3F7CDC is a mid, vivid blue. Relative luminance 0.206; OKLCH L 59.5% C 0.160 H 259.2°. Best body text is #000000 at 5.13:1 contrast (WCAG AA passes).

Color values

HEX	#3F7CDC
RGB	rgb(63, 124, 220)
HSL	hsl(217, 69%, 55%)
HSV	hsv(217, 71%, 86%)
CMYK	cmyk(71.4%, 43.6%, 0%, 13.7%)
CIE-LAB	lab(52.55, 12.32, -54.84)
CIE-LCH	lch(52.55, 56.21, 282.66°)
OKLab	oklab(59.47% -0.0299 -0.1569)
OKLCH	oklch(59.47% 0.16 259.2)
XYZ	xyz(22.1711, 20.6370, 70.5111)
Luminance	0.2064 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7CDC #DC9F3F

analogous

#3FCADC #3F7CDC #503FDC

triadic

#3F7CDC #DC3F7C #7CDC3F

tetradic

#3F7CDC #DC3FCA #DC9F3F #3FDC50

square

#3F7CDC #DC3FCA #DC9F3F #3FDC50

split-complementary

#3F7CDC #DC503F #CADC3F

monochromatic

#194488 #225EBC #3F7CDC #739FE5 #A7C3EF

Accessibility & contrast

On white

4.10

#3F7CDC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.13

#3F7CDC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7CDC

5.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7CDC	#FFFFFF	#000000	##000000
##3F7CDC	1.00	4.10	5.13	5.13
#FFFFFF	4.10	1.00	21.00	21.00
#000000	5.13	21.00	1.00	1.00
##000000	5.13	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C85E0

Deuteranopia (green-blind)

#2F77DA

Tritanopia (blue-blind)

#0092A1

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #3f7cdc;
/* rgb */ color: rgb(63, 124, 220);
/* oklch */ color: oklch(59.5% 0.160 259.2);

Tailwind

colors: {
  custom: {
    50: '#87a1e7',
    500: '#3f7cdc',
    950: '#000000',
  },
}

SCSS

$custom: #3f7cdc;
$custom-light: #87a1e7;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7cdc",
  "rgb": {
    "r": 63,
    "g": 124,
    "b": 220
  },
  "hsl": {
    "h": 216.688,
    "s": 69.163,
    "l": 55.49
  },
  "oklch": {
    "l": 0.59467,
    "c": 0.15976,
    "h": 259.2
  },
  "luminance": 0.20639
}

Semantic roles & 50–950 ramp

primary

#3F7CDC

secondary

#DCC39B

accent

#A83CEC

background

#F9F9FE

surface

#F1F2FC

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #3F7CDC

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

Preview Lab → · Contrast checker → · Palette generator →