#3F7ACE#3F7ACE

#3F7ACE is a mid, vivid blue. Relative luminance 0.194; OKLCH L 58.2% C 0.143 H 257.6°. Best body text is #000000 at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#3F7ACE
RGB	rgb(63, 122, 206)
HSL	hsl(215, 59%, 53%)
HSV	hsv(215, 69%, 81%)
CMYK	cmyk(69.4%, 40.8%, 0%, 19.2%)
CIE-LAB	lab(51.19, 8.52, -49.10)
CIE-LCH	lch(51.19, 49.83, 279.85°)
OKLab	oklab(58.15% -0.0309 -0.1401)
OKLCH	oklch(58.15% 0.143 257.6)
XYZ	xyz(20.1460, 19.4299, 61.0692)
Luminance	0.1943 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7ACE #CE933F

analogous

#3FC1CE #3F7ACE #4C3FCE

triadic

#3F7ACE #CE3F7A #7ACE3F

tetradic

#3F7ACE #CE3FC1 #CE933F #3FCE4C

square

#3F7ACE #CE3FC1 #CE933F #3FCE4C

split-complementary

#3F7ACE #CE4C3F #C1CE3F

monochromatic

#1E4275 #2A5DA6 #3F7ACE #709CDA #A1BEE7

Accessibility & contrast

On white

4.30

#3F7ACE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.89

#3F7ACE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7ACE

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7ACE	#FFFFFF	#000000	##000000
##3F7ACE	1.00	4.30	4.89	4.89
#FFFFFF	4.30	1.00	21.00	21.00
#000000	4.89	21.00	1.00	1.00
##000000	4.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5381D1

Deuteranopia (green-blind)

#3C74CC

Tritanopia (blue-blind)

#008D9A

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3f7ace;
/* rgb */ color: rgb(63, 122, 206);
/* oklch */ color: oklch(58.2% 0.143 257.6);

Tailwind

colors: {
  custom: {
    50: '#849fdd',
    500: '#3f7ace',
    950: '#000000',
  },
}

SCSS

$custom: #3f7ace;
$custom-light: #849fdd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7ace",
  "rgb": {
    "r": 63,
    "g": 122,
    "b": 206
  },
  "hsl": {
    "h": 215.245,
    "s": 59.336,
    "l": 52.745
  },
  "oklch": {
    "l": 0.58152,
    "c": 0.14345,
    "h": 257.6
  },
  "luminance": 0.19432
}

Semantic roles & 50–950 ramp

primary

#3F7ACE

secondary

#D3BA95

accent

#A245E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3F7ACE

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

Preview Lab → · Contrast checker → · Palette generator →