#40A3CF#40A3CF

#40A3CF is a light, moderate cyan. Relative luminance 0.318; OKLCH L 67.6% C 0.111 H 231.0°. Best body text is #000000 at 7.36:1 contrast (WCAG AA passes).

Color values

HEX	#40A3CF
RGB	rgb(64, 163, 207)
HSL	hsl(198, 60%, 53%)
HSV	hsv(198, 69%, 81%)
CMYK	cmyk(69.1%, 21.3%, 0%, 18.8%)
CIE-LAB	lab(63.17, -14.72, -30.83)
CIE-LCH	lch(63.17, 34.16, 244.49°)
OKLab	oklab(67.61% -0.0701 -0.0865)
OKLCH	oklch(67.61% 0.111 231)
XYZ	xyz(26.4695, 31.7864, 63.7598)
Luminance	0.3179 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40A3CF #CF6C40

analogous

#40CFB4 #40A3CF #405BCF

triadic

#40A3CF #CF40A3 #A3CF40

tetradic

#40A3CF #B440CF #CF6C40 #5BCF40

square

#40A3CF #B440CF #CF6C40 #5BCF40

split-complementary

#40A3CF #CF405B #CFB440

monochromatic

#1E5B77 #2A81A8 #40A3CF #71BBDB #A2D2E8

Accessibility & contrast

On white

2.85

#40A3CF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.36

#40A3CF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40A3CF

7.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40A3CF	#FFFFFF	#000000	##000000
##40A3CF	1.00	2.85	7.36	7.36
#FFFFFF	2.85	1.00	21.00	21.00
#000000	7.36	21.00	1.00	1.00
##000000	7.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8DA1D1

Deuteranopia (green-blind)

#7993CE

Tritanopia (blue-blind)

#00AFB2

Achromatopsia (no color)

#999999

Design tokens & code

CSS

--color: #40a3cf;
/* rgb */ color: rgb(64, 163, 207);
/* oklch */ color: oklch(67.6% 0.111 231.0);

Tailwind

colors: {
  custom: {
    50: '#86bedd',
    500: '#40a3cf',
    950: '#000000',
  },
}

SCSS

$custom: #40a3cf;
$custom-light: #86bedd;
$custom-dark: #000000;

JSON

{
  "hex": "#40a3cf",
  "rgb": {
    "r": 64,
    "g": 163,
    "b": 207
  },
  "hsl": {
    "h": 198.462,
    "s": 59.833,
    "l": 53.137
  },
  "oklch": {
    "l": 0.67614,
    "c": 0.11136,
    "h": 231
  },
  "luminance": 0.31789
}

Semantic roles & 50–950 ramp

primary

#40A3CF

secondary

#D4AA97

accent

#7545E3

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0C1215

muted

#7D8183

Preview Lab

Preview with #40A3CF

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

Preview Lab → · Contrast checker → · Palette generator →