#40B0D9#40B0D9

#40B0D9 is a light, moderate cyan. Relative luminance 0.371; OKLCH L 71.1% C 0.115 H 226.5°. Best body text is #000000 at 8.43:1 contrast (WCAG AA passes).

Color values

HEX	#40B0D9
RGB	rgb(64, 176, 217)
HSL	hsl(196, 67%, 55%)
HSV	hsv(196, 71%, 85%)
CMYK	cmyk(70.5%, 18.9%, 0%, 14.9%)
CIE-LAB	lab(67.39, -18.39, -29.83)
CIE-LCH	lch(67.39, 35.05, 238.34°)
OKLab	oklab(71.12% -0.0794 -0.0836)
OKLCH	oklch(71.12% 0.115 226.5)
XYZ	xyz(30.1590, 37.1470, 71.2128)
Luminance	0.3715 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B0D9 #D96940

analogous

#40D9B5 #40B0D9 #4064D9

triadic

#40B0D9 #D940B0 #B0D940

tetradic

#40B0D9 #B540D9 #D96940 #64D940

square

#40B0D9 #B540D9 #D96940 #64D940

split-complementary

#40B0D9 #D94064 #D9B540

monochromatic

#1A6884 #2490B7 #40B0D9 #73C5E3 #A6DAED

Accessibility & contrast

On white

2.49

#40B0D9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.43

#40B0D9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B0D9

8.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B0D9	#FFFFFF	#000000	##000000
##40B0D9	1.00	2.49	8.43	8.43
#FFFFFF	2.49	1.00	21.00	21.00
#000000	8.43	21.00	1.00	1.00
##000000	8.43	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9AADDB

Deuteranopia (green-blind)

#859DD9

Tritanopia (blue-blind)

#00BCBD

Achromatopsia (no color)

#A4A4A4

Design tokens & code

CSS

--color: #40b0d9;
/* rgb */ color: rgb(64, 176, 217);
/* oklch */ color: oklch(71.1% 0.115 226.5);

Tailwind

colors: {
  custom: {
    50: '#88c7e5',
    500: '#40b0d9',
    950: '#000000',
  },
}

SCSS

$custom: #40b0d9;
$custom-light: #88c7e5;
$custom-dark: #000000;

JSON

{
  "hex": "#40b0d9",
  "rgb": {
    "r": 64,
    "g": 176,
    "b": 217
  },
  "hsl": {
    "h": 196.078,
    "s": 66.812,
    "l": 55.098
  },
  "oklch": {
    "l": 0.71118,
    "c": 0.11528,
    "h": 226.5
  },
  "luminance": 0.3715
}

Semantic roles & 50–950 ramp

primary

#40B0D9

secondary

#DAAC9A

accent

#6C3EEA

background

#F9FCFE

surface

#F1F8FC

border

#CBD1D5

text

#0D1315

muted

#7E8284

Preview Lab

Preview with #40B0D9

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

Preview Lab → · Contrast checker → · Palette generator →