#39B8E9#39B8E9

#39B8E9 is a light, vivid cyan. Relative luminance 0.410; OKLCH L 73.5% C 0.128 H 228.7°. Best body text is #000000 at 9.21:1 contrast (WCAG AA passes).

Color values

HEX	#39B8E9
RGB	rgb(57, 184, 233)
HSL	hsl(197, 80%, 57%)
HSV	hsv(197, 76%, 91%)
CMYK	cmyk(75.5%, 21%, 0%, 8.6%)
CIE-LAB	lab(70.20, -18.25, -34.25)
CIE-LCH	lch(70.20, 38.81, 241.95°)
OKLab	oklab(73.53% -0.0845 -0.0962)
OKLCH	oklch(73.53% 0.128 228.7)
XYZ	xyz(33.5298, 41.0300, 83.2274)
Luminance	0.4103 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#39B8E9 #E96A39

analogous

#39E9C2 #39B8E9 #3960E9

triadic

#39B8E9 #E939B8 #B8E939

tetradic

#39B8E9 #C239E9 #E96A39 #60E939

square

#39B8E9 #C239E9 #E96A39 #60E939

split-complementary

#39B8E9 #E93960 #E9C239

monochromatic

#117297 #179BCE #39B8E9 #70CCEF #A7E0F5

Accessibility & contrast

On white

2.28

#39B8E9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.21

#39B8E9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #39B8E9

9.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##39B8E9	#FFFFFF	#000000	##000000
##39B8E9	1.00	2.28	9.21	9.21
#FFFFFF	2.28	1.00	21.00	21.00
#000000	9.21	21.00	1.00	1.00
##000000	9.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9EB5EB

Deuteranopia (green-blind)

#87A4E8

Tritanopia (blue-blind)

#00C6C8

Achromatopsia (no color)

#ACACAC

Design tokens & code

CSS

--color: #39b8e9;
/* rgb */ color: rgb(57, 184, 233);
/* oklch */ color: oklch(73.5% 0.128 228.7);

Tailwind

colors: {
  custom: {
    50: '#88cdf0',
    500: '#39b8e9',
    950: '#000000',
  },
}

SCSS

$custom: #39b8e9;
$custom-light: #88cdf0;
$custom-dark: #000000;

JSON

{
  "hex": "#39b8e9",
  "rgb": {
    "r": 57,
    "g": 184,
    "b": 233
  },
  "hsl": {
    "h": 196.705,
    "s": 80,
    "l": 56.863
  },
  "oklch": {
    "l": 0.73528,
    "c": 0.12806,
    "h": 228.7
  },
  "luminance": 0.41034
}

Semantic roles & 50–950 ramp

primary

#39B8E9

secondary

#E3AF9B

accent

#6831F6

background

#F9FCFE

surface

#F1F9FD

border

#CBD2D5

text

#0D1316

muted

#7E8284

Preview Lab

Preview with #39B8E9

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

Preview Lab → · Contrast checker → · Palette generator →