#40CFD0
Closest named color: Medium Turquoise (#48D1CC). oklch(78.1% 0.118 195.7), rgb(64, 207, 208).
Aa
Black text reads best on this color (11.05:1).
About this color
#40CFD0 is a light, moderately saturated teal or cyan. In OKLCH its lightness is 78%, its chroma 0.118 and its hue 196°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Turquoise (#48D1CC), ΔE 0.010 away. Black text reads best on it, at 11.05:1.
| Hue family | Teals and cyans |
| Lightness | light (78%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Medium Turquoise (#48D1CC) |
| Black text | 11.05:1 |
| White text | 1.89:1 |
Values
| HEX | #40CFD0 |
| RGB | rgb(64, 207, 208) |
| HSL | hsl(180, 61%, 53%) |
| OKLCH | oklch(78.1% 0.118 195.7) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #40CFD0 | 1.89:1 | Fails | Lc -40.0 | Non-text elements, placeholder text |
| Black text on #40CFD0 | 11.05:1 | AAA | Lc 68.1 | Content text, not long reading |
| #40CFD0 text on white | 1.89:1 | Fails | Lc 35.8 | Non-text elements, placeholder text |
| #40CFD0 text on black | 11.05:1 | AAA | Lc -66.7 | Content text, not long reading |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 300.
-
Step 50
50
#EAF9F9
oklch(97.1% 0.016 196.9)
-
Step 100
100
#D1F1F1
oklch(93.5% 0.033 196.6)
-
Step 200
200
#A6E7E7
oklch(88.5% 0.065 196)
-
Step 300
300 (this color)
#40CFD0
oklch(78.1% 0.118 195.7)
-
Step 400
400
#00B7B9
oklch(70.6% 0.12 196.2)
-
Step 500
500
#009D9E
oklch(63.1% 0.108 195.6)
-
Step 600
600
#008485
oklch(55.6% 0.095 195.7)
-
Step 700
700
#006F70
oklch(49.1% 0.084 195.9)
-
Step 800
800
#005B5C
oklch(42.7% 0.073 196.1)
-
Step 900
900
#004C4C
oklch(37.7% 0.064 194.8)
-
Step 950
950
#002D2E
oklch(27% 0.046 197.1)
#40CFD0 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #C1C5D0 | 0.122 |
| Deuteranopia (no green cones) | #ACB5D1 | 0.115 |
| Tritanopia (no blue cones) | #00D6CF | 0.023 |
| Achromatopsia (no color) | #BCBCBC | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40CFD0
#40CFD0
oklch(78.1% 0.118 195.7)
- #FA989E
#FA989E
oklch(78.2% 0.118 16.2)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #40CFD0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Turquoise #48D1CC ΔE 0.010
- Dark Turquoise #00CED1 ΔE 0.017
- Aqua Blue #02D8E9 ΔE 0.037
- Turquoise #40E0D0 ΔE 0.049
- Seafoam Blue #78D1B6 ΔE 0.051
- Medium Aquamarine #66CDAA ΔE 0.054
- Vivid Sky Blue #4CC9F0 ΔE 0.055
- Pale Teal #82CBB2 ΔE 0.056
Use #40CFD0 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.