#3FA8DB
Closest named color: Turquoise Blue (#06B1C4). oklch(69.3% 0.12 233.6), rgb(63, 168, 219).
Aa
Black text reads best on this color (7.83:1).
About this color
#3FA8DB is a medium-light, moderately saturated blue. In OKLCH its lightness is 69%, its chroma 0.120 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.052 away. Black text reads best on it, at 7.83:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 7.83:1 |
| White text | 2.68:1 |
Values
| HEX | #3FA8DB |
| RGB | rgb(63, 168, 219) |
| HSL | hsl(200, 68%, 55%) |
| OKLCH | oklch(69.3% 0.12 233.6) |
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 #3FA8DB | 2.68:1 | Fails | Lc -56.9 | Large or bold text, headings |
| Black text on #3FA8DB | 7.83:1 | AAA | Lc 52.3 | Large or bold text, headings |
| #3FA8DB text on white | 2.68:1 | Fails | Lc 51.7 | Large or bold text, headings |
| #3FA8DB text on black | 7.83:1 | AAA | Lc -50.2 | 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
#BFDEF1
oklch(88.4% 0.042 234.9)
-
Step 300
300
#90C9EA
oklch(80.8% 0.075 234.3)
-
Step 400
400 (this color)
#3FA8DB
oklch(69.3% 0.12 233.6)
-
Step 500
500
#0095CC
oklch(63.1% 0.132 233.7)
-
Step 600
600
#007DAC
oklch(55.5% 0.116 233.8)
-
Step 700
700
#006991
oklch(49% 0.102 233.6)
-
Step 800
800
#005678
oklch(42.7% 0.089 233.9)
-
Step 900
900
#004864
oklch(37.8% 0.078 232.8)
-
Step 950
950
#002A3D
oklch(26.9% 0.056 233.8)
#3FA8DB 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) | #8FA6DD | 0.076 |
| Deuteranopia (no green cones) | #7A97DA | 0.065 |
| Tritanopia (no blue cones) | #00B6B9 | 0.077 |
| Achromatopsia (no color) | #9E9E9E | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FA8DB
#3FA8DB
oklch(69.3% 0.12 233.6)
- #D68650
#D68650
oklch(69.3% 0.121 53.4)
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 #3FA8DB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.052
- Chefchaouen Blue #4895EF ΔE 0.066
- Greyblue #77A1B5 ΔE 0.067
- Cornflower Blue #6495ED ΔE 0.068
- Deep Sky Blue #00BFFF ΔE 0.071
- Dark Sky Blue #448EE4 ΔE 0.076
- Faded Blue #658CBB ΔE 0.081
- Bluegrey #85A3B2 ΔE 0.081
Use #3FA8DB 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.