#40EFE7
Closest named color: Bright Aqua (#0BF9EA). oklch(86.5% 0.137 190.3), rgb(64, 239, 231).
Aa
Black text reads best on this color (14.71:1).
About this color
#40EFE7 is a light, moderately saturated teal or cyan. In OKLCH its lightness is 87%, its chroma 0.137 and its hue 190°. Its hue sits on the cool side of the wheel. The nearest named color is Bright Aqua (#0BF9EA), ΔE 0.027 away. Black text reads best on it, at 14.71:1.
| Hue family | Teals and cyans |
| Lightness | light (87%) |
| Chroma | moderately saturated (0.137) |
| Temperature | cool |
| Nearest name | Bright Aqua (#0BF9EA) |
| Black text | 14.71:1 |
| White text | 1.42:1 |
Values
| HEX | #40EFE7 |
| RGB | rgb(64, 239, 231) |
| HSL | hsl(177, 85%, 59%) |
| OKLCH | oklch(86.5% 0.137 190.3) |
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 #40EFE7 | 1.42:1 | Fails | Lc -22.8 | Dividers and decoration only |
| Black text on #40EFE7 | 14.71:1 | AAA | Lc 83.7 | Fine for body text |
| #40EFE7 text on white | 1.42:1 | Fails | Lc 20.0 | Dividers and decoration only |
| #40EFE7 text on black | 14.71:1 | AAA | Lc -83.4 | Fine for body text |
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 200.
-
Step 50
50
#E5FBF9
oklch(97.1% 0.023 190.2)
-
Step 100
100
#C4F5F1
oklch(93.5% 0.05 190.2)
-
Step 200
200 (this color)
#40EFE7
oklch(86.5% 0.137 190.3)
-
Step 300
300
#00DDD5
oklch(81% 0.14 190.1)
-
Step 400
400
#00B8B2
oklch(70.6% 0.122 190.6)
-
Step 500
500
#009E98
oklch(63.1% 0.109 190)
-
Step 600
600
#008580
oklch(55.7% 0.096 190.1)
-
Step 700
700
#00706C
oklch(49.2% 0.085 190.4)
-
Step 800
800
#005C58
oklch(42.8% 0.074 189.6)
-
Step 900
900
#004C49
oklch(37.6% 0.065 190.2)
-
Step 950
950
#002D2C
oklch(26.9% 0.046 192.5)
#40EFE7 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) | #E1E2E7 | 0.145 |
| Deuteranopia (no green cones) | #C8D0E8 | 0.136 |
| Tritanopia (no blue cones) | #00F6EC | 0.020 |
| Achromatopsia (no color) | #D8D8D8 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40EFE7
#40EFE7
oklch(86.5% 0.137 190.3)
- #FFBFC7
#FFBFC7
oklch(86.5% 0.074 10.4)
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 #40EFE7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bright Aqua #0BF9EA ΔE 0.027
- Bright Light Blue #26F7FD ΔE 0.031
- Bright Turquoise #0FFEF9 ΔE 0.040
- Bright Cyan #41FDFE ΔE 0.043
- Robin's Egg #6DEDFD ΔE 0.044
- Turquoise #40E0D0 ΔE 0.045
- Cyan #00FFFF ΔE 0.045
- Light Turquoise #7EF4CC ΔE 0.054
Use #40EFE7 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.