#40CFD8
Closest named color: Medium Turquoise (#48D1CC). oklch(78.4% 0.118 201.2), rgb(64, 207, 216).
Aa
Black text reads best on this color (11.13:1).
About this color
#40CFD8 is a light, moderately saturated teal or cyan. In OKLCH its lightness is 78%, its chroma 0.118 and its hue 201°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Turquoise (#48D1CC), ΔE 0.020 away. Black text reads best on it, at 11.13:1.
| Hue family | Teals and cyans |
| Lightness | light (78%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Medium Turquoise (#48D1CC) |
| Black text | 11.13:1 |
| White text | 1.88:1 |
Values
| HEX | #40CFD8 |
| RGB | rgb(64, 207, 216) |
| HSL | hsl(184, 66%, 55%) |
| OKLCH | oklch(78.4% 0.118 201.2) |
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 #40CFD8 | 1.88:1 | Fails | Lc -39.6 | Non-text elements, placeholder text |
| Black text on #40CFD8 | 11.13:1 | AAA | Lc 68.5 | Content text, not long reading |
| #40CFD8 text on white | 1.88:1 | Fails | Lc 35.4 | Non-text elements, placeholder text |
| #40CFD8 text on black | 11.13:1 | AAA | Lc -67.1 | 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
#EAF9FA
oklch(97.1% 0.016 201.7)
-
Step 100
100
#D1F1F3
oklch(93.6% 0.033 201.2)
-
Step 200
200
#A5E7EB
oklch(88.5% 0.066 200.8)
-
Step 300
300 (this color)
#40CFD8
oklch(78.4% 0.118 201.2)
-
Step 400
400
#00B6C0
oklch(70.7% 0.12 201.8)
-
Step 500
500
#009CA4
oklch(63% 0.107 201.2)
-
Step 600
600
#00838A
oklch(55.5% 0.094 201.4)
-
Step 700
700
#006E74
oklch(49% 0.083 201.4)
-
Step 800
800
#005A5F
oklch(42.5% 0.072 201.4)
-
Step 900
900
#004B50
oklch(37.6% 0.064 202.5)
-
Step 950
950
#002D30
oklch(27% 0.046 201.8)
#40CFD8 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) | #BFC6D9 | 0.119 |
| Deuteranopia (no green cones) | #A9B6D9 | 0.110 |
| Tritanopia (no blue cones) | #00D7D1 | 0.030 |
| Achromatopsia (no color) | #BDBDBD | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40CFD8
#40CFD8
oklch(78.4% 0.118 201.2)
- #FB9997
#FB9997
oklch(78.3% 0.118 21.4)
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 #40CFD8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Turquoise #48D1CC ΔE 0.020
- Dark Turquoise #00CED1 ΔE 0.021
- Aqua Blue #02D8E9 ΔE 0.029
- Vivid Sky Blue #4CC9F0 ΔE 0.044
- Turquoise #40E0D0 ΔE 0.053
- Bright Sky Blue #02CCFE ΔE 0.059
- Seafoam Blue #78D1B6 ΔE 0.059
- Sky Blue #87CEEB ΔE 0.063
Use #40CFD8 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.