#5CFFF9
Closest named color: Bright Cyan (#41FDFE). oklch(91.5% 0.134 191.6), rgb(92, 255, 249).
Aa
Black text reads best on this color (17.12:1).
About this color
#5CFFF9 is a very light, moderately saturated teal or cyan. In OKLCH its lightness is 91%, its chroma 0.134 and its hue 192°. Its hue sits on the cool side of the wheel. The nearest named color is Bright Cyan (#41FDFE), ΔE 0.016 away. Black text reads best on it, at 17.12:1.
| Hue family | Teals and cyans |
| Lightness | very light (91%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Bright Cyan (#41FDFE) |
| Black text | 17.12:1 |
| White text | 1.22:1 |
Values
| HEX | #5CFFF9 |
| RGB | rgb(92, 255, 249) |
| HSL | hsl(178, 100%, 68%) |
| OKLCH | oklch(91.5% 0.134 191.6) |
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 #5CFFF9 | 1.22:1 | Fails | Lc -12.6 | Not readable |
| Black text on #5CFFF9 | 17.12:1 | AAA | Lc 92.8 | Preferred for body text |
| #5CFFF9 text on white | 1.22:1 | Fails | Lc 10.8 | Not readable |
| #5CFFF9 text on black | 17.12:1 | AAA | Lc -93.3 | Preferred 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 100.
-
Step 50
50
#E5FBF9
oklch(97.1% 0.023 190.2)
-
Step 100
100 (this color)
#5CFFF9
oklch(91.5% 0.134 191.6)
-
Step 200
200
#88EEE9
oklch(88.6% 0.096 191.5)
-
Step 300
300
#00DCD7
oklch(80.8% 0.139 191.8)
-
Step 400
400
#00B8B3
oklch(70.7% 0.122 191.3)
-
Step 500
500
#009E9A
oklch(63.2% 0.109 191.6)
-
Step 600
600
#008581
oklch(55.7% 0.096 191.1)
-
Step 700
700
#00706D
oklch(49.2% 0.085 191.5)
-
Step 800
800
#005B59
oklch(42.6% 0.073 192.2)
-
Step 900
900
#004C4A
oklch(37.6% 0.065 191.7)
-
Step 950
950
#002D2C
oklch(26.9% 0.046 192.5)
#5CFFF9 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) | #F0F3F9 | 0.140 |
| Deuteranopia (no green cones) | #D8E0FA | 0.133 |
| Tritanopia (no blue cones) | #00FFFD | 0.024 |
| Achromatopsia (no color) | #E8E8E8 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5CFFF9
#5CFFF9
oklch(91.5% 0.134 191.6)
- #FFD7DB
#FFD7DB
oklch(91.4% 0.045 11.2)
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 #5CFFF9, closest first.
No curated palette has a color within ΔE 0.04 of #5CFFF9.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bright Cyan #41FDFE ΔE 0.016
- Bright Turquoise #0FFEF9 ΔE 0.024
- Cyan #00FFFF ΔE 0.024
- Bright Light Blue #26F7FD ΔE 0.034
- Bright Aqua #0BF9EA ΔE 0.038
- Light Aqua #8CFFDB ΔE 0.048
- Robin Egg Blue #8AF1FE ΔE 0.049
- Robin's Egg #6DEDFD ΔE 0.051
Use #5CFFF9 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.