#3FAAD8
Closest named color: Turquoise Blue (#06B1C4). oklch(69.6% 0.117 230.5), rgb(63, 170, 216).
Aa
Black text reads best on this color (7.95:1).
About this color
#3FAAD8 is a medium-light, moderately saturated blue. In OKLCH its lightness is 70%, its chroma 0.117 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.045 away. Black text reads best on it, at 7.95:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 7.95:1 |
| White text | 2.64:1 |
Values
| HEX | #3FAAD8 |
| RGB | rgb(63, 170, 216) |
| HSL | hsl(198, 66%, 55%) |
| OKLCH | oklch(69.6% 0.117 230.5) |
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 #3FAAD8 | 2.64:1 | Fails | Lc -56.3 | Large or bold text, headings |
| Black text on #3FAAD8 | 7.95:1 | AAA | Lc 52.9 | Large or bold text, headings |
| #3FAAD8 text on white | 2.64:1 | Fails | Lc 51.1 | Large or bold text, headings |
| #3FAAD8 text on black | 7.95:1 | AAA | Lc -50.8 | 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
#EFF7FB
oklch(97.1% 0.01 228.9)
-
Step 100
100
#DCEDF6
oklch(93.6% 0.022 230.5)
-
Step 200
200
#BFDFEF
oklch(88.5% 0.04 229.4)
-
Step 300
300
#8FCAE7
oklch(80.9% 0.073 230)
-
Step 400
400 (this color)
#3FAAD8
oklch(69.6% 0.117 230.5)
-
Step 500
500
#0096C7
oklch(63.1% 0.126 230.5)
-
Step 600
600
#007EA8
oklch(55.6% 0.112 230.6)
-
Step 700
700
#006A8E
oklch(49.1% 0.099 230.6)
-
Step 800
800
#005775
oklch(42.8% 0.086 230.3)
-
Step 900
900
#004862
oklch(37.7% 0.076 230.8)
-
Step 950
950
#002B3C
oklch(27.1% 0.054 230.4)
#3FAAD8 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) | #93A8DA | 0.081 |
| Deuteranopia (no green cones) | #7E99D7 | 0.068 |
| Tritanopia (no blue cones) | #00B7B9 | 0.071 |
| Achromatopsia (no color) | #9F9F9F | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FAAD8
#3FAAD8
oklch(69.6% 0.117 230.5)
- #D78757
#D78757
oklch(69.7% 0.117 50.8)
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 #3FAAD8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.045
- Greyblue #77A1B5 ΔE 0.064
- Deep Sky Blue #00BFFF ΔE 0.069
- Chefchaouen Blue #4895EF ΔE 0.074
- Cornflower Blue #6495ED ΔE 0.076
- Bluegrey #85A3B2 ΔE 0.077
- Cadet Blue #5F9EA0 ΔE 0.081
- Light Sea Green #20B2AA ΔE 0.082
Use #3FAAD8 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.