#43C1E5
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(75.7% 0.119 220.9), rgb(67, 193, 229).
Aa
Black text reads best on this color (9.99:1).
About this color
#43C1E5 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 76%, its chroma 0.119 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.026 away. Black text reads best on it, at 9.99:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 9.99:1 |
| White text | 2.10:1 |
Values
| HEX | #43C1E5 |
| RGB | rgb(67, 193, 229) |
| HSL | hsl(193, 76%, 58%) |
| OKLCH | oklch(75.7% 0.119 220.9) |
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 #43C1E5 | 2.10:1 | Fails | Lc -45.4 | Large or bold text, headings |
| Black text on #43C1E5 | 9.99:1 | AAA | Lc 63.2 | Content text, not long reading |
| #43C1E5 text on white | 2.10:1 | Fails | Lc 40.8 | Non-text elements, placeholder text |
| #43C1E5 text on black | 9.99:1 | AAA | Lc -61.5 | 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
#EFF7FA
oklch(97.1% 0.009 222.1)
-
Step 100
100
#DBEEF4
oklch(93.7% 0.022 218.6)
-
Step 200
200
#BCE0ED
oklch(88.5% 0.042 221.7)
-
Step 300
300
#89CCE3
oklch(80.9% 0.075 221.5)
-
Step 400
400 (this color)
#43C1E5
oklch(75.7% 0.119 220.9)
-
Step 500
500
#0099BA
oklch(63.2% 0.115 220.3)
-
Step 600
600
#00809D
oklch(55.6% 0.102 221.1)
-
Step 700
700
#006C84
oklch(49.2% 0.09 220.2)
-
Step 800
800
#00586D
oklch(42.6% 0.078 221.3)
-
Step 900
900
#00495B
oklch(37.6% 0.069 221.4)
-
Step 950
950
#002C37
oklch(27.1% 0.049 219.4)
#43C1E5 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) | #ABBCE7 | 0.098 |
| Deuteranopia (no green cones) | #95ACE5 | 0.087 |
| Tritanopia (no blue cones) | #00CDCC | 0.060 |
| Achromatopsia (no color) | #B3B3B3 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #43C1E5
#43C1E5
oklch(75.7% 0.119 220.9)
- #F09574
#F09574
oklch(75.6% 0.119 40.6)
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 #43C1E5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.026
- Bright Sky Blue #02CCFE ΔE 0.040
- Deep Sky Blue #00BFFF ΔE 0.043
- Lightblue #7BC8F6 ΔE 0.055
- Dark Turquoise #00CED1 ΔE 0.056
- Aqua Blue #02D8E9 ΔE 0.062
- Turquoise Blue #06B1C4 ΔE 0.066
- Medium Turquoise #48D1CC ΔE 0.067
Use #43C1E5 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.