#3FA3D0
Closest named color: Turquoise Blue (#06B1C4). oklch(67.6% 0.113 231.4), rgb(63, 163, 208).
Aa
Black text reads best on this color (7.36:1).
About this color
#3FA3D0 is a medium-light, moderately saturated blue. In OKLCH its lightness is 68%, its chroma 0.113 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.051 away. Black text reads best on it, at 7.36:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.113) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 7.36:1 |
| White text | 2.85:1 |
Values
| HEX | #3FA3D0 |
| RGB | rgb(63, 163, 208) |
| HSL | hsl(199, 61%, 53%) |
| OKLCH | oklch(67.6% 0.113 231.4) |
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 #3FA3D0 | 2.85:1 | Fails | Lc -59.6 | Large or bold text, headings |
| Black text on #3FA3D0 | 7.36:1 | AAA | Lc 49.7 | Large or bold text, headings |
| #3FA3D0 text on white | 2.85:1 | Fails | Lc 54.3 | Large or bold text, headings |
| #3FA3D0 text on black | 7.36:1 | AAA | Lc -47.5 | 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 400.
-
Step 50
50
#EFF7FB
oklch(97.1% 0.01 228.9)
-
Step 100
100
#DDEDF5
oklch(93.7% 0.02 229)
-
Step 200
200
#C0DEEF
oklch(88.4% 0.04 232.7)
-
Step 300
300
#92C9E6
oklch(80.8% 0.07 231.7)
-
Step 400
400 (this color)
#3FA3D0
oklch(67.6% 0.113 231.4)
-
Step 500
500
#0096C8
oklch(63.1% 0.127 231)
-
Step 600
600
#007EA9
oklch(55.6% 0.112 231.2)
-
Step 700
700
#006A8F
oklch(49.2% 0.1 231.3)
-
Step 800
800
#005776
oklch(42.8% 0.087 231.2)
-
Step 900
900
#004863
oklch(37.7% 0.077 231.8)
-
Step 950
950
#002B3C
oklch(27.1% 0.054 230.4)
#3FA3D0 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) | #8CA1D2 | 0.075 |
| Deuteranopia (no green cones) | #7993CF | 0.065 |
| Tritanopia (no blue cones) | #00AFB2 | 0.068 |
| Achromatopsia (no color) | #999999 | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FA3D0
#3FA3D0
oklch(67.6% 0.113 231.4)
- #CE8253
#CE8253
oklch(67.7% 0.113 51.6)
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 #3FA3D0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.051
- Greyblue #77A1B5 ΔE 0.059
- Faded Blue #658CBB ΔE 0.066
- Chefchaouen Blue #4895EF ΔE 0.068
- Cadet Blue #5F9EA0 ΔE 0.071
- Cornflower Blue #6495ED ΔE 0.071
- Dark Sky Blue #448EE4 ΔE 0.072
- Bluegrey #85A3B2 ΔE 0.076
Use #3FA3D0 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.