#39B9E9#39B9E9

#39B9E9 is a light, vivid cyan. Relative luminance 0.415; OKLCH L 73.8% C 0.128 H 228.0°. Best body text is #000000 at 9.29:1 contrast (WCAG AA passes).

Color values

HEX	#39B9E9
RGB	rgb(57, 185, 233)
HSL	hsl(196, 80%, 57%)
HSV	hsv(196, 76%, 91%)
CMYK	cmyk(75.5%, 20.6%, 0%, 8.6%)
CIE-LAB	lab(70.49, -18.77, -33.80)
CIE-LCH	lch(70.49, 38.66, 240.96°)
OKLab	oklab(73.76% -0.0854 -0.0949)
OKLCH	oklch(73.76% 0.128 228)
XYZ	xyz(33.7383, 41.4469, 83.2969)
Luminance	0.4145 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#39B9E9 #E96939

analogous

#39E9C1 #39B9E9 #3961E9

triadic

#39B9E9 #E939B9 #B9E939

tetradic

#39B9E9 #C139E9 #E96939 #61E939

square

#39B9E9 #C139E9 #E96939 #61E939

split-complementary

#39B9E9 #E93961 #E9C139

monochromatic

#117297 #179CCE #39B9E9 #70CCEF #A7E0F5

Accessibility & contrast

On white

2.26

#39B9E9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.29

#39B9E9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #39B9E9

9.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##39B9E9	#FFFFFF	#000000	##000000
##39B9E9	1.00	2.26	9.29	9.29
#FFFFFF	2.26	1.00	21.00	21.00
#000000	9.29	21.00	1.00	1.00
##000000	9.29	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A0B6EB

Deuteranopia (green-blind)

#88A5E8

Tritanopia (blue-blind)

#00C7C9

Achromatopsia (no color)

#ACACAC

Design tokens & code

CSS

--color: #39b9e9;
/* rgb */ color: rgb(57, 185, 233);
/* oklch */ color: oklch(73.8% 0.128 228.0);

Tailwind

colors: {
  custom: {
    50: '#88cef0',
    500: '#39b9e9',
    950: '#000000',
  },
}

SCSS

$custom: #39b9e9;
$custom-light: #88cef0;
$custom-dark: #000000;

JSON

{
  "hex": "#39b9e9",
  "rgb": {
    "r": 57,
    "g": 185,
    "b": 233
  },
  "hsl": {
    "h": 196.364,
    "s": 80,
    "l": 56.863
  },
  "oklch": {
    "l": 0.73761,
    "c": 0.1277,
    "h": 228
  },
  "luminance": 0.41451
}

Semantic roles & 50–950 ramp

primary

#39B9E9

secondary

#E3AF9B

accent

#6731F6

background

#F9FCFE

surface

#F1F9FD

border

#CBD2D5

text

#0D1316

muted

#7E8284

Preview Lab

Preview with #39B9E9

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

Preview Lab → · Contrast checker → · Palette generator →