#40BFC7
Closest named color: Dark Turquoise (#00CED1). oklch(74% 0.109 201.2), rgb(64, 191, 199).
Aa
Black text reads best on this color (9.49:1).
About this color
#40BFC7 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 74%, its chroma 0.109 and its hue 201°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Turquoise (#00CED1), ΔE 0.040 away. Black text reads best on it, at 9.49:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.109) |
| Temperature | cool |
| Nearest name | Dark Turquoise (#00CED1) |
| Black text | 9.49:1 |
| White text | 2.21:1 |
Values
| HEX | #40BFC7 |
| RGB | rgb(64, 191, 199) |
| HSL | hsl(184, 55%, 52%) |
| OKLCH | oklch(74% 0.109 201.2) |
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 #40BFC7 | 2.21:1 | Fails | Lc -48.0 | Large or bold text, headings |
| Black text on #40BFC7 | 9.49:1 | AAA | Lc 60.8 | Content text, not long reading |
| #40BFC7 text on white | 2.21:1 | Fails | Lc 43.2 | Non-text elements, placeholder text |
| #40BFC7 text on black | 9.49:1 | AAA | Lc -59.0 | Large or bold text, headings |
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 400.
-
Step 50
50
#EFF7F8
oklch(97% 0.009 205.9)
-
Step 100
100
#DCEEEF
oklch(93.6% 0.019 200.9)
-
Step 200
200
#BDE1E3
oklch(88.5% 0.038 200.6)
-
Step 300
300
#8BCED3
oklch(80.8% 0.068 201.8)
-
Step 400
400 (this color)
#40BFC7
oklch(74% 0.109 201.2)
-
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)
#40BFC7 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) | #B1B7C8 | 0.110 |
| Deuteranopia (no green cones) | #9DA8C8 | 0.102 |
| Tritanopia (no blue cones) | #00C6C1 | 0.029 |
| Achromatopsia (no color) | #AEAEAE | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40BFC7
#40BFC7
oklch(74% 0.109 201.2)
- #E78E8D
#E78E8D
oklch(73.9% 0.109 20.7)
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 #40BFC7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Turquoise #00CED1 ΔE 0.040
- Topaz #13BBAF ΔE 0.041
- Turquoise Blue #06B1C4 ΔE 0.047
- Medium Turquoise #48D1CC ΔE 0.051
- Light Sea Green #20B2AA ΔE 0.054
- Vivid Sky Blue #4CC9F0 ΔE 0.062
- Medium Aquamarine #66CDAA ΔE 0.071
- Greeny Blue #42B395 ΔE 0.071
Use #40BFC7 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.