#40C3DE#40C3DE

#40C3DE is a light, moderate cyan. Relative luminance 0.454; OKLCH L 75.8% C 0.117 H 214.5°. Best body text is #000000 at 10.08:1 contrast (WCAG AA passes).

Color values

HEX	#40C3DE
RGB	rgb(64, 195, 222)
HSL	hsl(190, 71%, 56%)
HSV	hsv(190, 71%, 87%)
CMYK	cmyk(71.2%, 12.2%, 0%, 12.9%)
CIE-LAB	lab(73.15, -26.53, -23.72)
CIE-LCH	lch(73.15, 35.59, 221.80°)
OKLab	oklab(75.8% -0.0961 -0.0661)
OKLCH	oklch(75.8% 0.117 214.5)
XYZ	xyz(34.8087, 45.3901, 76.0197)
Luminance	0.4539 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40C3DE #DE5B40

analogous

#40DEAA #40C3DE #4074DE

triadic

#40C3DE #DE40C3 #C3DE40

tetradic

#40C3DE #AA40DE #DE5B40 #74DE40

square

#40C3DE #AA40DE #DE5B40 #74DE40

split-complementary

#40C3DE #DE4074 #DEAA40

monochromatic

#18788B #21A5C0 #40C3DE #74D3E7 #A8E4F0

Accessibility & contrast

On white

2.08

#40C3DE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.08

#40C3DE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40C3DE

10.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40C3DE	#FFFFFF	#000000	##000000
##40C3DE	1.00	2.08	10.08	10.08
#FFFFFF	2.08	1.00	21.00	21.00
#000000	10.08	21.00	1.00	1.00
##000000	10.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B0BDE0

Deuteranopia (green-blind)

#9AADDE

Tritanopia (blue-blind)

#00CDCB

Achromatopsia (no color)

#B4B4B4

Design tokens & code

CSS

--color: #40c3de;
/* rgb */ color: rgb(64, 195, 222);
/* oklch */ color: oklch(75.8% 0.117 214.5);

Tailwind

colors: {
  custom: {
    50: '#8ad5e8',
    500: '#40c3de',
    950: '#000000',
  },
}

SCSS

$custom: #40c3de;
$custom-light: #8ad5e8;
$custom-dark: #000000;

JSON

{
  "hex": "#40c3de",
  "rgb": {
    "r": 64,
    "g": 195,
    "b": 222
  },
  "hsl": {
    "h": 190.253,
    "s": 70.536,
    "l": 56.078
  },
  "oklch": {
    "l": 0.75802,
    "c": 0.11663,
    "h": 214.5
  },
  "luminance": 0.45394
}

Semantic roles & 50–950 ramp

primary

#40C3DE

secondary

#DEA79C

accent

#593AED

background

#F9FDFE

surface

#F2FAFC

border

#CCD3D5

text

#0D1416

muted

#7E8384

Preview Lab

Preview with #40C3DE

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

Preview Lab → · Contrast checker → · Palette generator →