#3FFFEE
Closest named color: Bright Turquoise (#0FFEF9). oklch(90.5% 0.148 185.8), rgb(63, 255, 238).
Aa
Black text reads best on this color (16.74:1).
About this color
#3FFFEE is a very light, vivid teal or cyan. In OKLCH its lightness is 91%, its chroma 0.148 and its hue 186°. Its hue sits on the cool side of the wheel. The nearest named color is Bright Turquoise (#0FFEF9), ΔE 0.018 away. Black text reads best on it, at 16.74:1.
| Hue family | Teals and cyans |
| Lightness | very light (91%) |
| Chroma | vivid (0.148) |
| Temperature | cool |
| Nearest name | Bright Turquoise (#0FFEF9) |
| Black text | 16.74:1 |
| White text | 1.25:1 |
Values
| HEX | #3FFFEE |
| RGB | rgb(63, 255, 238) |
| HSL | hsl(175, 100%, 62%) |
| OKLCH | oklch(90.5% 0.148 185.8) |
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 #3FFFEE | 1.25:1 | Fails | Lc -14.0 | Not readable |
| Black text on #3FFFEE | 16.74:1 | AAA | Lc 91.5 | Preferred for body text |
| #3FFFEE text on white | 1.25:1 | Fails | Lc 12.1 | Not readable |
| #3FFFEE text on black | 16.74:1 | AAA | Lc -91.9 | 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 200.
-
Step 50
50
#E4FBF8
oklch(97.1% 0.024 187.3)
-
Step 100
100
#C1F6EF
oklch(93.5% 0.055 186.3)
-
Step 200
200 (this color)
#3FFFEE
oklch(90.5% 0.148 185.8)
-
Step 300
300
#00DECE
oklch(81% 0.142 185.7)
-
Step 400
400
#00B9AC
oklch(70.7% 0.124 186)
-
Step 500
500
#009F93
oklch(63.2% 0.111 185.4)
-
Step 600
600
#00857C
oklch(55.5% 0.097 186.5)
-
Step 700
700
#007068
oklch(49.1% 0.086 186.2)
-
Step 800
800
#005C55
oklch(42.7% 0.075 185.9)
-
Step 900
900
#004D47
oklch(37.8% 0.066 185.9)
-
Step 950
950
#002E2A
oklch(27.1% 0.048 185.8)
#3FFFEE 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) | #F2F1EE | 0.157 |
| Deuteranopia (no green cones) | #D8DEF0 | 0.148 |
| Tritanopia (no blue cones) | #00FFF9 | 0.017 |
| Achromatopsia (no color) | #E6E6E6 | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FFFEE
#3FFFEE
oklch(90.5% 0.148 185.8)
- #FFD2DA
#FFD2DA
oklch(90.4% 0.052 6.2)
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 #3FFFEE, closest first.
No curated palette has a color within ΔE 0.04 of #3FFFEE.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bright Turquoise #0FFEF9 ΔE 0.018
- Bright Aqua #0BF9EA ΔE 0.022
- Cyan #00FFFF ΔE 0.025
- Bright Cyan #41FDFE ΔE 0.025
- Bright Light Blue #26F7FD ΔE 0.036
- Aquamarine #7FFFD4 ΔE 0.045
- Light Aqua #8CFFDB ΔE 0.048
- Light Turquoise #7EF4CC ΔE 0.050
Use #3FFFEE 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.