#3F88D3#3F88D3

#3F88D3 is a mid, vivid cyan. Relative luminance 0.234; OKLCH L 61.6% C 0.135 H 251.5°. Best body text is #000000 at 5.67:1 contrast (WCAG AA passes).

Color values

HEX	#3F88D3
RGB	rgb(63, 136, 211)
HSL	hsl(210, 63%, 54%)
HSV	hsv(210, 70%, 83%)
CMYK	cmyk(70.1%, 35.5%, 0%, 17.3%)
CIE-LAB	lab(55.45, 1.83, -45.16)
CIE-LCH	lch(55.45, 45.20, 272.33°)
OKLab	oklab(61.56% -0.043 -0.1283)
OKLCH	oklch(61.56% 0.135 251.5)
XYZ	xyz(22.6076, 23.3658, 64.9340)
Luminance	0.2337 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F88D3 #D38A3F

analogous

#3FD2D3 #3F88D3 #403FD3

triadic

#3F88D3 #D33F88 #88D33F

tetradic

#3F88D3 #D33FD2 #D38A3F #3FD340

square

#3F88D3 #D33FD2 #D38A3F #3FD340

split-complementary

#3F88D3 #D3403F #D2D33F

monochromatic

#1C4B7B #2869AD #3F88D3 #71A7DE #A3C6EA

Accessibility & contrast

On white

3.70

#3F88D3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.67

#3F88D3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F88D3

5.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F88D3	#FFFFFF	#000000	##000000
##3F88D3	1.00	3.70	5.67	5.67
#FFFFFF	3.70	1.00	21.00	21.00
#000000	5.67	21.00	1.00	1.00
##000000	5.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#668CD6

Deuteranopia (green-blind)

#517ED2

Tritanopia (blue-blind)

#009AA3

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #3f88d3;
/* rgb */ color: rgb(63, 136, 211);
/* oklch */ color: oklch(61.6% 0.135 251.5);

Tailwind

colors: {
  custom: {
    50: '#85aae1',
    500: '#3f88d3',
    950: '#000000',
  },
}

SCSS

$custom: #3f88d3;
$custom-light: #85aae1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f88d3",
  "rgb": {
    "r": 63,
    "g": 136,
    "b": 211
  },
  "hsl": {
    "h": 210.405,
    "s": 62.712,
    "l": 53.725
  },
  "oklch": {
    "l": 0.61561,
    "c": 0.13535,
    "h": 251.5
  },
  "luminance": 0.23368
}

Semantic roles & 50–950 ramp

primary

#3F88D3

secondary

#D7B797

accent

#9542E6

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #3F88D3

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

Preview Lab → · Contrast checker → · Palette generator →