#3F8DDD#3F8DDD

#3F8DDD is a light, vivid cyan. Relative luminance 0.253; OKLCH L 63.2% C 0.143 H 251.6°. Best body text is #000000 at 6.07:1 contrast (WCAG AA passes).

Color values

HEX	#3F8DDD
RGB	rgb(63, 141, 221)
HSL	hsl(210, 70%, 56%)
HSV	hsv(210, 71%, 87%)
CMYK	cmyk(71.5%, 36.2%, 0%, 13.3%)
CIE-LAB	lab(57.39, 2.40, -47.69)
CIE-LCH	lch(57.39, 47.75, 272.88°)
OKLab	oklab(63.25% -0.0451 -0.1357)
OKLCH	oklch(63.25% 0.143 251.6)
XYZ	xyz(24.6210, 25.3243, 71.9831)
Luminance	0.2533 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F8DDD #DD8F3F

analogous

#3FDCDD #3F8DDD #403FDD

triadic

#3F8DDD #DD3F8D #8DDD3F

tetradic

#3F8DDD #DD3FDC #DD8F3F #3FDD40

square

#3F8DDD #DD3FDC #DD8F3F #3FDD40

split-complementary

#3F8DDD #DD403F #DCDD3F

monochromatic

#185089 #226EBD #3F8DDD #73ACE6 #A7CBEF

Accessibility & contrast

On white

3.46

#3F8DDD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.07

#3F8DDD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F8DDD

6.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F8DDD	#FFFFFF	#000000	##000000
##3F8DDD	1.00	3.46	6.07	6.07
#FFFFFF	3.46	1.00	21.00	21.00
#000000	6.07	21.00	1.00	1.00
##000000	6.07	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6892E0

Deuteranopia (green-blind)

#5183DB

Tritanopia (blue-blind)

#00A0AA

Achromatopsia (no color)

#8A8A8A

Design tokens & code

CSS

--color: #3f8ddd;
/* rgb */ color: rgb(63, 141, 221);
/* oklch */ color: oklch(63.2% 0.143 251.6);

Tailwind

colors: {
  custom: {
    50: '#87ade8',
    500: '#3f8ddd',
    950: '#000000',
  },
}

SCSS

$custom: #3f8ddd;
$custom-light: #87ade8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f8ddd",
  "rgb": {
    "r": 63,
    "g": 141,
    "b": 221
  },
  "hsl": {
    "h": 210.38,
    "s": 69.912,
    "l": 55.686
  },
  "oklch": {
    "l": 0.6325,
    "c": 0.14299,
    "h": 251.6
  },
  "luminance": 0.25327
}

Semantic roles & 50–950 ramp

primary

#3F8DDD

secondary

#DDBC9B

accent

#953BED

background

#F9FAFE

surface

#F1F4FC

border

#CBCED5

text

#0D1016

muted

#7E7F84

Preview Lab

Preview with #3F8DDD

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

Preview Lab → · Contrast checker → · Palette generator →