#42A9CD#42A9CD

#42A9CD is a light, moderate cyan. Relative luminance 0.339; OKLCH L 69.0% C 0.107 H 224.9°. Best body text is #000000 at 7.79:1 contrast (WCAG AA passes).

Color values

HEX	#42A9CD
RGB	rgb(66, 169, 205)
HSL	hsl(196, 58%, 53%)
HSV	hsv(196, 68%, 80%)
CMYK	cmyk(67.8%, 17.6%, 0%, 19.6%)
CIE-LAB	lab(64.91, -18.27, -27.02)
CIE-LCH	lch(64.91, 32.61, 235.93°)
OKLab	oklab(69% -0.0758 -0.0755)
OKLCH	oklch(69% 0.107 224.9)
XYZ	xyz(27.4497, 33.9389, 62.8500)
Luminance	0.3394 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42A9CD #CD6642

analogous

#42CDAC #42A9CD #4263CD

triadic

#42A9CD #CD42A9 #A9CD42

tetradic

#42A9CD #AC42CD #CD6642 #63CD42

square

#42A9CD #AC42CD #CD6642 #63CD42

split-complementary

#42A9CD #CD4263 #CDAC42

monochromatic

#1F5F76 #2C86A6 #42A9CD #72BFDA #A3D5E7

Accessibility & contrast

On white

2.70

#42A9CD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.79

#42A9CD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42A9CD

7.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42A9CD	#FFFFFF	#000000	##000000
##42A9CD	1.00	2.70	7.79	7.79
#FFFFFF	2.70	1.00	21.00	21.00
#000000	7.79	21.00	1.00	1.00
##000000	7.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#95A5CF

Deuteranopia (green-blind)

#8297CD

Tritanopia (blue-blind)

#00B4B5

Achromatopsia (no color)

#9D9D9D

Design tokens & code

CSS

--color: #42a9cd;
/* rgb */ color: rgb(66, 169, 205);
/* oklch */ color: oklch(69.0% 0.107 224.9);

Tailwind

colors: {
  custom: {
    50: '#86c2dc',
    500: '#42a9cd',
    950: '#000000',
  },
}

SCSS

$custom: #42a9cd;
$custom-light: #86c2dc;
$custom-dark: #000000;

JSON

{
  "hex": "#42a9cd",
  "rgb": {
    "r": 66,
    "g": 169,
    "b": 205
  },
  "hsl": {
    "h": 195.54,
    "s": 58.159,
    "l": 53.137
  },
  "oklch": {
    "l": 0.69001,
    "c": 0.10702,
    "h": 224.9
  },
  "luminance": 0.33942
}

Semantic roles & 50–950 ramp

primary

#42A9CD

secondary

#D3A797

accent

#6F46E1

background

#F8FBFD

surface

#F0F7FB

border

#CBD0D4

text

#0C1215

muted

#7D8183

Preview Lab

Preview with #42A9CD

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

Preview Lab → · Contrast checker → · Palette generator →