#40A3CB#40A3CB

#40A3CB is a light, moderate cyan. Relative luminance 0.316; OKLCH L 67.4% C 0.108 H 228.5°. Best body text is #000000 at 7.32:1 contrast (WCAG AA passes).

Color values

HEX	#40A3CB
RGB	rgb(64, 163, 203)
HSL	hsl(197, 57%, 52%)
HSV	hsv(197, 68%, 80%)
CMYK	cmyk(68.5%, 19.7%, 0%, 20.4%)
CIE-LAB	lab(63.01, -16.02, -28.85)
CIE-LCH	lch(63.01, 33.00, 240.96°)
OKLab	oklab(67.43% -0.0716 -0.0808)
OKLCH	oklch(67.43% 0.108 228.5)
XYZ	xyz(25.9867, 31.5933, 61.2169)
Luminance	0.3160 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40A3CB #CB6840

analogous

#40CBAD #40A3CB #405ECB

triadic

#40A3CB #CB40A3 #A3CB40

tetradic

#40A3CB #AD40CB #CB6840 #5ECB40

square

#40A3CB #AD40CB #CB6840 #5ECB40

split-complementary

#40A3CB #CB405E #CBAD40

monochromatic

#1F5A72 #2C80A2 #40A3CB #70BAD8 #A0D1E5

Accessibility & contrast

On white

2.87

#40A3CB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.32

#40A3CB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40A3CB

7.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40A3CB	#FFFFFF	#000000	##000000
##40A3CB	1.00	2.87	7.32	7.32
#FFFFFF	2.87	1.00	21.00	21.00
#000000	7.32	21.00	1.00	1.00
##000000	7.32	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8EA0CD

Deuteranopia (green-blind)

#7B92CA

Tritanopia (blue-blind)

#00AEB0

Achromatopsia (no color)

#989898

Design tokens & code

CSS

--color: #40a3cb;
/* rgb */ color: rgb(64, 163, 203);
/* oklch */ color: oklch(67.4% 0.108 228.5);

Tailwind

colors: {
  custom: {
    50: '#85bedb',
    500: '#40a3cb',
    950: '#000000',
  },
}

SCSS

$custom: #40a3cb;
$custom-light: #85bedb;
$custom-dark: #000000;

JSON

{
  "hex": "#40a3cb",
  "rgb": {
    "r": 64,
    "g": 163,
    "b": 203
  },
  "hsl": {
    "h": 197.266,
    "s": 57.202,
    "l": 52.353
  },
  "oklch": {
    "l": 0.67433,
    "c": 0.10795,
    "h": 228.5
  },
  "luminance": 0.31596
}

Semantic roles & 50–950 ramp

primary

#40A3CB

secondary

#D2A795

accent

#7347E0

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0C1215

muted

#7D8183

Preview Lab

Preview with #40A3CB

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

Preview Lab → · Contrast checker → · Palette generator →