#3F9BCB#3F9BCB

#3F9BCB is a light, moderate cyan. Relative luminance 0.288; OKLCH L 65.5% C 0.112 H 235.0°. Best body text is #000000 at 6.76:1 contrast (WCAG AA passes).

Color values

HEX	#3F9BCB
RGB	rgb(63, 155, 203)
HSL	hsl(201, 57%, 52%)
HSV	hsv(201, 69%, 80%)
CMYK	cmyk(69%, 23.6%, 0%, 20.4%)
CIE-LAB	lab(60.61, -11.82, -32.56)
CIE-LCH	lch(60.61, 34.64, 250.06°)
OKLab	oklab(65.52% -0.0641 -0.0915)
OKLCH	oklch(65.52% 0.112 235)
XYZ	xyz(24.5465, 28.8086, 60.7553)
Luminance	0.2881 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F9BCB #CB6F3F

analogous

#3FCBB5 #3F9BCB #3F55CB

triadic

#3F9BCB #CB3F9B #9BCB3F

tetradic

#3F9BCB #B53FCB #CB6F3F #55CB3F

square

#3F9BCB #B53FCB #CB6F3F #55CB3F

split-complementary

#3F9BCB #CB3F55 #CBB53F

monochromatic

#1F5571 #2C79A1 #3F9BCB #6FB4D8 #9FCDE5

Accessibility & contrast

On white

3.11

#3F9BCB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.76

#3F9BCB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F9BCB

6.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F9BCB	#FFFFFF	#000000	##000000
##3F9BCB	1.00	3.11	6.76	6.76
#FFFFFF	3.11	1.00	21.00	21.00
#000000	6.76	21.00	1.00	1.00
##000000	6.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#849ACD

Deuteranopia (green-blind)

#718CCA

Tritanopia (blue-blind)

#00A8AB

Achromatopsia (no color)

#929292

Design tokens & code

CSS

--color: #3f9bcb;
/* rgb */ color: rgb(63, 155, 203);
/* oklch */ color: oklch(65.5% 0.112 235.0);

Tailwind

colors: {
  custom: {
    50: '#84b8db',
    500: '#3f9bcb',
    950: '#000000',
  },
}

SCSS

$custom: #3f9bcb;
$custom-light: #84b8db;
$custom-dark: #000000;

JSON

{
  "hex": "#3f9bcb",
  "rgb": {
    "r": 63,
    "g": 155,
    "b": 203
  },
  "hsl": {
    "h": 200.571,
    "s": 57.377,
    "l": 52.157
  },
  "oklch": {
    "l": 0.65518,
    "c": 0.11173,
    "h": 235
  },
  "luminance": 0.28811
}

Semantic roles & 50–950 ramp

primary

#3F9BCB

secondary

#D1A994

accent

#7C47E1

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0C1115

muted

#7D8083

Preview Lab

Preview with #3F9BCB

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

Preview Lab → · Contrast checker → · Palette generator →