#3FA3C5
Closest named color: Turquoise Blue (#06B1C4). oklch(67.1% 0.104 224.2), rgb(63, 163, 197).
Aa
Black text reads best on this color (7.25:1).
About this color
#3FA3C5 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 67%, its chroma 0.104 and its hue 224°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.042 away. Black text reads best on it, at 7.25:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 7.25:1 |
| White text | 2.89:1 |
Values
| HEX | #3FA3C5 |
| RGB | rgb(63, 163, 197) |
| HSL | hsl(195, 54%, 51%) |
| OKLCH | oklch(67.1% 0.104 224.2) |
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 #3FA3C5 | 2.89:1 | Fails | Lc -60.2 | Content text, not long reading |
| Black text on #3FA3C5 | 7.25:1 | AAA | Lc 49.1 | Large or bold text, headings |
| #3FA3C5 text on white | 2.89:1 | Fails | Lc 54.9 | Large or bold text, headings |
| #3FA3C5 text on black | 7.25:1 | AAA | Lc -46.9 | Large or bold text, headings |
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
#F0F7FA
oklch(97.2% 0.008 225.1)
-
Step 100
100
#DDEDF3
oklch(93.6% 0.019 222.2)
-
Step 200
200
#C1DFEB
oklch(88.6% 0.036 223.9)
-
Step 300
300
#93CAE0
oklch(80.9% 0.065 224.7)
-
Step 400
400 (this color)
#3FA3C5
oklch(67.1% 0.104 224.2)
-
Step 500
500
#0098BF
oklch(63.2% 0.119 224.4)
-
Step 600
600
#0080A1
oklch(55.7% 0.105 224.1)
-
Step 700
700
#006B87
oklch(49% 0.092 224)
-
Step 800
800
#005870
oklch(42.8% 0.081 224.4)
-
Step 900
900
#00495D
oklch(37.7% 0.071 223.8)
-
Step 950
950
#002B39
oklch(26.9% 0.051 225.5)
#3FA3C5 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) | #909FC7 | 0.081 |
| Deuteranopia (no green cones) | #7D92C5 | 0.071 |
| Tritanopia (no blue cones) | #00ADAE | 0.056 |
| Achromatopsia (no color) | #989898 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FA3C5
#3FA3C5
oklch(67.1% 0.104 224.2)
- #CB805F
#CB805F
oklch(67.1% 0.104 44.3)
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 #3FA3C5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.042
- Greyblue #77A1B5 ΔE 0.052
- Cadet Blue #5F9EA0 ΔE 0.055
- Faded Blue #658CBB ΔE 0.066
- Bluegrey #85A3B2 ΔE 0.069
- Light Sea Green #20B2AA ΔE 0.070
- Bluey Grey #89A0B0 ΔE 0.074
- Silver Lake Blue #778DA9 ΔE 0.075
Use #3FA3C5 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.