#3F93BB
Closest named color: Faded Blue (#658CBB). oklch(62.9% 0.1 232.2), rgb(63, 147, 187).
Aa
Black text reads best on this color (6.10:1).
About this color
#3F93BB is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.100 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.038 away. Black text reads best on it, at 6.10:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.10:1 |
| White text | 3.44:1 |
Values
| HEX | #3F93BB |
| RGB | rgb(63, 147, 187) |
| HSL | hsl(199, 50%, 49%) |
| OKLCH | oklch(62.9% 0.1 232.2) |
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 #3F93BB | 3.44:1 | AA large text | Lc -67.2 | Content text, not long reading |
| Black text on #3F93BB | 6.10:1 | AA | Lc 42.4 | Non-text elements, placeholder text |
| #3F93BB text on white | 3.44:1 | AA large text | Lc 61.7 | Content text, not long reading |
| #3F93BB text on black | 6.10:1 | AA | Lc -40.0 | Non-text elements, placeholder text |
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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C8DDE8
oklch(88.5% 0.027 230.4)
-
Step 300
300
#A2C7DB
oklch(80.9% 0.049 231.7)
-
Step 400
400
#6CAAC9
oklch(70.8% 0.078 231.1)
-
Step 500
500 (this color)
#3F93BB
oklch(62.9% 0.1 232.2)
-
Step 600
600
#127DA8
oklch(55.5% 0.109 232.5)
-
Step 700
700
#006A90
oklch(49.2% 0.1 232)
-
Step 800
800
#095675
oklch(42.7% 0.084 232.5)
-
Step 900
900
#15475E
oklch(37.6% 0.065 232.4)
-
Step 950
950
#0E2A37
oklch(27% 0.041 231.2)
#3F93BB 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) | #7F91BD | 0.066 |
| Deuteranopia (no green cones) | #6E85BA | 0.056 |
| Tritanopia (no blue cones) | #009EA0 | 0.065 |
| Achromatopsia (no color) | #8A8A8A | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F93BB
#3F93BB
oklch(62.9% 0.1 232.2)
- #B9774D
#B9774D
oklch(63% 0.101 52.4)
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 #3F93BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.038
- Blue NCS #118AB2 ΔE 0.039
- Dusty Blue #5A86AD ΔE 0.040
- Cool Blue #4984B8 ΔE 0.042
- Off Blue #5684AE ΔE 0.043
- Steel Blue #4682B4 ΔE 0.047
- Water Blue #0E87CC ΔE 0.055
- Silver Lake Blue #778DA9 ΔE 0.058
Use #3F93BB 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.