#3F7FE2#3F7FE2

#3F7FE2 is a mid, vivid blue. Relative luminance 0.217; OKLCH L 60.5% C 0.164 H 259.0°. Best body text is #000000 at 5.35:1 contrast (WCAG AA passes).

Color values

HEX	#3F7FE2
RGB	rgb(63, 127, 226)
HSL	hsl(216, 74%, 57%)
HSV	hsv(216, 72%, 89%)
CMYK	cmyk(72.1%, 43.8%, 0%, 11.4%)
CIE-LAB	lab(53.73, 12.63, -56.32)
CIE-LCH	lch(53.73, 57.72, 282.64°)
OKLab	oklab(60.5% -0.0315 -0.1612)
OKLCH	oklch(60.5% 0.164 259)
XYZ	xyz(23.3618, 21.7239, 74.8987)
Luminance	0.2173 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7FE2 #E2A23F

analogous

#3FD0E2 #3F7FE2 #513FE2

triadic

#3F7FE2 #E23F7F #7FE23F

tetradic

#3F7FE2 #E23FD0 #E2A23F #3FE251

square

#3F7FE2 #E23FD0 #E2A23F #3FE251

split-complementary

#3F7FE2 #E2513F #D0E23F

monochromatic

#164691 #1E60C6 #3F7FE2 #74A2EA #A9C6F2

Accessibility & contrast

On white

3.93

#3F7FE2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.35

#3F7FE2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7FE2

5.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7FE2	#FFFFFF	#000000	##000000
##3F7FE2	1.00	3.93	5.35	5.35
#FFFFFF	3.93	1.00	21.00	21.00
#000000	5.35	21.00	1.00	1.00
##000000	5.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D88E6

Deuteranopia (green-blind)

#2E79E0

Tritanopia (blue-blind)

#0096A5

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #3f7fe2;
/* rgb */ color: rgb(63, 127, 226);
/* oklch */ color: oklch(60.5% 0.164 259.0);

Tailwind

colors: {
  custom: {
    50: '#88a3ec',
    500: '#3f7fe2',
    950: '#000000',
  },
}

SCSS

$custom: #3f7fe2;
$custom-light: #88a3ec;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7fe2",
  "rgb": {
    "r": 63,
    "g": 127,
    "b": 226
  },
  "hsl": {
    "h": 216.442,
    "s": 73.756,
    "l": 56.667
  },
  "oklch": {
    "l": 0.60495,
    "c": 0.16426,
    "h": 259
  },
  "luminance": 0.21726
}

Semantic roles & 50–950 ramp

primary

#3F7FE2

secondary

#E0C69D

accent

#A837F0

background

#F9FAFE

surface

#F1F3FD

border

#CBCDD5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #3F7FE2

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

Preview Lab → · Contrast checker → · Palette generator →