#42A1D9#42A1D9

#42A1D9 is a light, vivid cyan. Relative luminance 0.317; OKLCH L 67.7% C 0.121 H 238.3°. Best body text is #000000 at 7.33:1 contrast (WCAG AA passes).

Color values

HEX	#42A1D9
RGB	rgb(66, 161, 217)
HSL	hsl(202, 67%, 55%)
HSV	hsv(202, 70%, 85%)
CMYK	cmyk(69.6%, 25.8%, 0%, 14.9%)
CIE-LAB	lab(63.06, -10.02, -36.55)
CIE-LCH	lch(63.06, 37.90, 254.68°)
OKLab	oklab(67.68% -0.0636 -0.103)
OKLCH	oklch(67.68% 0.121 238.3)
XYZ	xyz(27.5111, 31.6547, 70.2923)
Luminance	0.3166 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A1D9 #D97A42

analogous

#42D9C6 #42A1D9 #4255D9

triadic

#42A1D9 #D942A1 #A1D942

tetradic

#42A1D9 #C642D9 #D97A42 #55D942

square

#42A1D9 #C642D9 #D97A42 #55D942

split-complementary

#42A1D9 #D94255 #D9C642

monochromatic

#1B5E86 #2582B9 #42A1D9 #75BAE3 #A8D4ED

Accessibility & contrast

On white

2.86

#42A1D9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.33

#42A1D9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A1D9

7.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A1D9	#FFFFFF	#000000	##000000
##42A1D9	1.00	2.86	7.33	7.33
#FFFFFF	2.86	1.00	21.00	21.00
#000000	7.33	21.00	1.00	1.00
##000000	7.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#87A1DC

Deuteranopia (green-blind)

#7292D8

Tritanopia (blue-blind)

#00AFB4

Achromatopsia (no color)

#999999

Design tokens & code

CSS

--color: #42a1d9;
/* rgb */ color: rgb(66, 161, 217);
/* oklch */ color: oklch(67.7% 0.121 238.3);

Tailwind

colors: {
  custom: {
    50: '#88bce5',
    500: '#42a1d9',
    950: '#000000',
  },
}

SCSS

$custom: #42a1d9;
$custom-light: #88bce5;
$custom-dark: #000000;

JSON

{
  "hex": "#42a1d9",
  "rgb": {
    "r": 66,
    "g": 161,
    "b": 217
  },
  "hsl": {
    "h": 202.252,
    "s": 66.52,
    "l": 55.49
  },
  "oklch": {
    "l": 0.67682,
    "c": 0.12104,
    "h": 238.3
  },
  "luminance": 0.31658
}

Semantic roles & 50–950 ramp

primary

#42A1D9

secondary

#DBB39C

accent

#7E3EE9

background

#F9FBFE

surface

#F1F6FC

border

#CBD0D5

text

#0D1215

muted

#7E8184

Preview Lab

Preview with #42A1D9

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

Preview Lab → · Contrast checker → · Palette generator →