#42ABD9#42ABD9

#42ABD9 is a light, moderate cyan. Relative luminance 0.353; OKLCH L 70.0% C 0.116 H 230.7°. Best body text is #000000 at 8.06:1 contrast (WCAG AA passes).

Color values

HEX	#42ABD9
RGB	rgb(66, 171, 217)
HSL	hsl(198, 67%, 55%)
HSV	hsv(198, 70%, 85%)
CMYK	cmyk(69.6%, 21.2%, 0%, 14.9%)
CIE-LAB	lab(65.97, -15.46, -32.01)
CIE-LCH	lch(65.97, 35.55, 244.22°)
OKLab	oklab(70% -0.0735 -0.0898)
OKLCH	oklch(70% 0.116 230.7)
XYZ	xyz(29.3291, 35.2905, 70.8982)
Luminance	0.3529 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42ABD9 #D97042

analogous

#42D9BB #42ABD9 #425FD9

triadic

#42ABD9 #D942AB #ABD942

tetradic

#42ABD9 #BB42D9 #D97042 #5FD942

square

#42ABD9 #BB42D9 #D97042 #5FD942

split-complementary

#42ABD9 #D9425F #D9BB42

monochromatic

#1B6586 #258CB9 #42ABD9 #75C2E3 #A8D8ED

Accessibility & contrast

On white

2.61

#42ABD9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.06

#42ABD9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42ABD9

8.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42ABD9	#FFFFFF	#000000	##000000
##42ABD9	1.00	2.61	8.06	8.06
#FFFFFF	2.61	1.00	21.00	21.00
#000000	8.06	21.00	1.00	1.00
##000000	8.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#94A9DB

Deuteranopia (green-blind)

#7F9AD8

Tritanopia (blue-blind)

#00B8BA

Achromatopsia (no color)

#A0A0A0

Design tokens & code

CSS

--color: #42abd9;
/* rgb */ color: rgb(66, 171, 217);
/* oklch */ color: oklch(70.0% 0.116 230.7);

Tailwind

colors: {
  custom: {
    50: '#88c4e5',
    500: '#42abd9',
    950: '#000000',
  },
}

SCSS

$custom: #42abd9;
$custom-light: #88c4e5;
$custom-dark: #000000;

JSON

{
  "hex": "#42abd9",
  "rgb": {
    "r": 66,
    "g": 171,
    "b": 217
  },
  "hsl": {
    "h": 198.278,
    "s": 66.52,
    "l": 55.49
  },
  "oklch": {
    "l": 0.70004,
    "c": 0.11604,
    "h": 230.7
  },
  "luminance": 0.35294
}

Semantic roles & 50–950 ramp

primary

#42ABD9

secondary

#DBAF9C

accent

#723EE9

background

#F9FCFE

surface

#F1F8FC

border

#CBD1D5

text

#0D1215

muted

#7E8184

Preview Lab

Preview with #42ABD9

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

Preview Lab → · Contrast checker → · Palette generator →