#3FEAF9
Closest named color: Robin's Egg (#6DEDFD). oklch(86% 0.134 203.9), rgb(63, 234, 249).
Aa
Black text reads best on this color (14.34:1).
About this color
#3FEAF9 is a light, moderately saturated teal or cyan. In OKLCH its lightness is 86%, its chroma 0.134 and its hue 204°. Its hue sits on the cool side of the wheel. The nearest named color is Robin's Egg (#6DEDFD), ΔE 0.029 away. Black text reads best on it, at 14.34:1.
| Hue family | Teals and cyans |
| Lightness | light (86%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Robin's Egg (#6DEDFD) |
| Black text | 14.34:1 |
| White text | 1.46:1 |
Values
| HEX | #3FEAF9 |
| RGB | rgb(63, 234, 249) |
| HSL | hsl(185, 94%, 61%) |
| OKLCH | oklch(86% 0.134 203.9) |
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 #3FEAF9 | 1.46:1 | Fails | Lc -24.5 | Dividers and decoration only |
| Black text on #3FEAF9 | 14.34:1 | AAA | Lc 82.2 | Fine for body text |
| #3FEAF9 text on white | 1.46:1 | Fails | Lc 21.5 | Dividers and decoration only |
| #3FEAF9 text on black | 14.34:1 | AAA | Lc -81.8 | Fine 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
#E5FAFD
oklch(97.1% 0.022 207.1)
-
Step 100
100
#C4F4F9
oklch(93.5% 0.049 204.2)
-
Step 200
200 (this color)
#3FEAF9
oklch(86% 0.134 203.9)
-
Step 300
300
#00DAE9
oklch(81% 0.138 203.6)
-
Step 400
400
#00B6C3
oklch(70.8% 0.121 203.9)
-
Step 500
500
#009CA7
oklch(63.1% 0.108 203.6)
-
Step 600
600
#00838D
oklch(55.6% 0.095 204.2)
-
Step 700
700
#006E76
oklch(49.1% 0.084 203.6)
-
Step 800
800
#005A61
oklch(42.6% 0.073 204)
-
Step 900
900
#004B51
oklch(37.6% 0.064 204)
-
Step 950
950
#002D31
oklch(27.1% 0.046 204.1)
#3FEAF9 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) | #D7E0FA | 0.133 |
| Deuteranopia (no green cones) | #BDCDFA | 0.123 |
| Tritanopia (no blue cones) | #00F4EE | 0.037 |
| Achromatopsia (no color) | #D5D5D5 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FEAF9
#3FEAF9
oklch(86% 0.134 203.9)
- #FFBEB9
#FFBEB9
oklch(85.9% 0.076 23.8)
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 #3FEAF9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Robin's Egg #6DEDFD ΔE 0.029
- Bright Light Blue #26F7FD ΔE 0.034
- Bright Cyan #41FDFE ΔE 0.051
- Bright Aqua #0BF9EA ΔE 0.053
- Bright Turquoise #0FFEF9 ΔE 0.055
- Aqua Blue #02D8E9 ΔE 0.055
- Robin Egg Blue #8AF1FE ΔE 0.055
- Cyan #00FFFF ΔE 0.055
Use #3FEAF9 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.