#3FA1BA
Closest named color: Cadet Blue (#5F9EA0). oklch(66.2% 0.097 217.8), rgb(63, 161, 186).
Aa
Black text reads best on this color (7.01:1).
About this color
#3FA1BA is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.097 and its hue 218°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.042 away. Black text reads best on it, at 7.01:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 7.01:1 |
| White text | 2.99:1 |
Values
| HEX | #3FA1BA |
| RGB | rgb(63, 161, 186) |
| HSL | hsl(192, 49%, 49%) |
| OKLCH | oklch(66.2% 0.097 217.8) |
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 #3FA1BA | 2.99:1 | Fails | Lc -61.6 | Content text, not long reading |
| Black text on #3FA1BA | 7.01:1 | AAA | Lc 47.8 | Large or bold text, headings |
| #3FA1BA text on white | 2.99:1 | Fails | Lc 56.3 | Large or bold text, headings |
| #3FA1BA text on black | 7.01:1 | AAA | Lc -45.5 | 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 500.
-
Step 50
50
#F1F7F8
oklch(97.2% 0.007 208.8)
-
Step 100
100
#E0ECF0
oklch(93.5% 0.014 219.6)
-
Step 200
200
#C7DEE5
oklch(88.6% 0.026 218)
-
Step 300
300
#9FC9D5
oklch(81% 0.047 217.1)
-
Step 400
400
#67ACC0
oklch(70.6% 0.076 218.4)
-
Step 500
500 (this color)
#3FA1BA
oklch(66.2% 0.097 217.8)
-
Step 600
600
#00819A
oklch(55.7% 0.1 217.7)
-
Step 700
700
#006C82
oklch(49.1% 0.088 218.4)
-
Step 800
800
#00596B
oklch(42.8% 0.077 217.7)
-
Step 900
900
#0B4958
oklch(37.6% 0.063 218.9)
-
Step 950
950
#0A2B33
oklch(26.9% 0.04 217)
#3FA1BA 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) | #919CBB | 0.084 |
| Deuteranopia (no green cones) | #7F90BA | 0.074 |
| Tritanopia (no blue cones) | #00AAA9 | 0.047 |
| Achromatopsia (no color) | #959595 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FA1BA
#3FA1BA
oklch(66.2% 0.097 217.8)
- #C67D67
#C67D67
oklch(66.1% 0.097 37.5)
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 #3FA1BA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.042
- Turquoise Blue #06B1C4 ΔE 0.044
- Greyblue #77A1B5 ΔE 0.051
- Sea #3C9992 ΔE 0.060
- Light Sea Green #20B2AA ΔE 0.062
- Dull Teal #5F9E8F ΔE 0.064
- Faded Blue #658CBB ΔE 0.065
- Persian Green #2A9D8F ΔE 0.067
Use #3FA1BA 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.