#43D4BB
Closest named color: Medium Aquamarine (#66CDAA). oklch(78.8% 0.127 178.8), rgb(67, 212, 187).
Aa
Black text reads best on this color (11.37:1).
About this color
#43D4BB is a light, moderately saturated teal or cyan. In OKLCH its lightness is 79%, its chroma 0.127 and its hue 179°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Aquamarine (#66CDAA), ΔE 0.029 away. Black text reads best on it, at 11.37:1.
| Hue family | Teals and cyans |
| Lightness | light (79%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 11.37:1 |
| White text | 1.84:1 |
Values
| HEX | #43D4BB |
| RGB | rgb(67, 212, 187) |
| HSL | hsl(170, 63%, 55%) |
| OKLCH | oklch(78.8% 0.127 178.8) |
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 #43D4BB | 1.84:1 | Fails | Lc -38.5 | Non-text elements, placeholder text |
| Black text on #43D4BB | 11.37:1 | AAA | Lc 69.5 | Content text, not long reading |
| #43D4BB text on white | 1.84:1 | Fails | Lc 34.3 | Non-text elements, placeholder text |
| #43D4BB text on black | 11.37:1 | AAA | Lc -68.2 | 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
#EAF9F5
oklch(97% 0.017 178.3)
-
Step 100
100
#D1F2EA
oklch(93.5% 0.036 179.2)
-
Step 200
200
#A6E9DA
oklch(88.5% 0.07 179.1)
-
Step 300
300 (this color)
#43D4BB
oklch(78.8% 0.127 178.8)
-
Step 400
400
#00BAA2
oklch(70.6% 0.129 179.1)
-
Step 500
500
#00A08B
oklch(63.2% 0.115 179)
-
Step 600
600
#008674
oklch(55.5% 0.101 178.9)
-
Step 700
700
#007161
oklch(49.1% 0.09 178.4)
-
Step 800
800
#005D50
oklch(42.8% 0.078 178.9)
-
Step 900
900
#004D42
oklch(37.6% 0.069 179)
-
Step 950
950
#002E27
oklch(27% 0.049 179.5)
#43D4BB 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) | #CBC7BA | 0.133 |
| Deuteranopia (no green cones) | #B7B8BD | 0.128 |
| Tritanopia (no blue cones) | #00D7CC | 0.025 |
| Achromatopsia (no color) | #BFBFBF | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #43D4BB
#43D4BB
oklch(78.8% 0.127 178.8)
- #FB96B8
#FB96B8
oklch(78.7% 0.127 358.8)
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 #43D4BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Aquamarine #66CDAA ΔE 0.029
- Medium Turquoise #48D1CC ΔE 0.029
- Seafoam Blue #78D1B6 ΔE 0.035
- Turquoise #40E0D0 ΔE 0.038
- Dark Turquoise #00CED1 ΔE 0.043
- Emerald #06D6A0 ΔE 0.046
- Pale Teal #82CBB2 ΔE 0.047
- Aqua Marine #2EE8BB ΔE 0.056
Use #43D4BB 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.