#40C7BD
Closest named color: Dark Turquoise (#00CED1). oklch(75.6% 0.115 187.9), rgb(64, 199, 189).
Aa
Black text reads best on this color (10.12:1).
About this color
#40C7BD is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 76%, its chroma 0.115 and its hue 188°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Turquoise (#00CED1), ΔE 0.030 away. Black text reads best on it, at 10.12:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | Dark Turquoise (#00CED1) |
| Black text | 10.12:1 |
| White text | 2.07:1 |
Values
| HEX | #40C7BD |
| RGB | rgb(64, 199, 189) |
| HSL | hsl(176, 55%, 52%) |
| OKLCH | oklch(75.6% 0.115 187.9) |
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 #40C7BD | 2.07:1 | Fails | Lc -44.7 | Non-text elements, placeholder text |
| Black text on #40C7BD | 10.12:1 | AAA | Lc 63.8 | Content text, not long reading |
| #40C7BD text on white | 2.07:1 | Fails | Lc 40.2 | Non-text elements, placeholder text |
| #40C7BD text on black | 10.12:1 | AAA | Lc -62.1 | 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 400.
-
Step 50
50
#EFF8F6
oklch(97.2% 0.01 181.4)
-
Step 100
100
#DBEFEC
oklch(93.7% 0.021 186)
-
Step 200
200
#BCE2DE
oklch(88.4% 0.04 188.6)
-
Step 300
300
#89D0C9
oklch(80.9% 0.072 188)
-
Step 400
400 (this color)
#40C7BD
oklch(75.6% 0.115 187.9)
-
Step 500
500
#009E96
oklch(63% 0.109 188.5)
-
Step 600
600
#00857E
oklch(55.6% 0.097 188.3)
-
Step 700
700
#00706A
oklch(49.1% 0.085 188.3)
-
Step 800
800
#005C56
oklch(42.8% 0.075 187.1)
-
Step 900
900
#004D48
oklch(37.8% 0.066 187.3)
-
Step 950
950
#002E2B
oklch(27.1% 0.047 188)
#40C7BD 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) | #BCBCBD | 0.122 |
| Deuteranopia (no green cones) | #A9AEBE | 0.115 |
| Tritanopia (no blue cones) | #00CCC4 | 0.019 |
| Achromatopsia (no color) | #B4B4B4 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40C7BD
#40C7BD
oklch(75.6% 0.115 187.9)
- #EE90A2
#EE90A2
oklch(75.6% 0.115 7.8)
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 #40C7BD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Turquoise #00CED1 ΔE 0.030
- Medium Turquoise #48D1CC ΔE 0.032
- Topaz #13BBAF ΔE 0.042
- Medium Aquamarine #66CDAA ΔE 0.043
- Seafoam Blue #78D1B6 ΔE 0.054
- Pale Teal #82CBB2 ΔE 0.054
- Light Sea Green #20B2AA ΔE 0.065
- Aqua Blue #02D8E9 ΔE 0.066
Use #40C7BD 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.