#3F97BA
Closest named color: Faded Blue (#658CBB). oklch(63.8% 0.098 227.7), rgb(63, 151, 186).
Aa
Black text reads best on this color (6.34:1).
About this color
#3F97BA is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 64%, its chroma 0.098 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.044 away. Black text reads best on it, at 6.34:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.34:1 |
| White text | 3.30:1 |
Values
| HEX | #3F97BA |
| RGB | rgb(63, 151, 186) |
| HSL | hsl(197, 49%, 49%) |
| OKLCH | oklch(63.8% 0.098 227.7) |
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 #3F97BA | 3.30:1 | AA large text | Lc -65.7 | Content text, not long reading |
| Black text on #3F97BA | 6.34:1 | AA | Lc 43.9 | Non-text elements, placeholder text |
| #3F97BA text on white | 3.30:1 | AA large text | Lc 60.2 | Content text, not long reading |
| #3F97BA text on black | 6.34:1 | AA | Lc -41.5 | 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
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C8DDE7
oklch(88.5% 0.026 227.9)
-
Step 300
300
#A1C7D9
oklch(80.8% 0.048 228.3)
-
Step 400
400
#6BAAC6
oklch(70.6% 0.077 228.1)
-
Step 500
500 (this color)
#3F97BA
oklch(63.8% 0.098 227.7)
-
Step 600
600
#077FA4
oklch(55.7% 0.107 227.5)
-
Step 700
700
#006A8B
oklch(49% 0.096 228.3)
-
Step 800
800
#025772
oklch(42.7% 0.082 227.8)
-
Step 900
900
#12485C
oklch(37.7% 0.064 227.4)
-
Step 950
950
#0D2A36
oklch(26.9% 0.041 228.4)
#3F97BA 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) | #8594BC | 0.073 |
| Deuteranopia (no green cones) | #7388BA | 0.062 |
| Tritanopia (no blue cones) | #00A1A2 | 0.059 |
| Achromatopsia (no color) | #8D8D8D | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F97BA
#3F97BA
oklch(63.8% 0.098 227.7)
- #BC7856
#BC7856
oklch(63.7% 0.098 47)
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 #3F97BA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.044
- Blue NCS #118AB2 ΔE 0.048
- Dusty Blue #5A86AD ΔE 0.049
- Off Blue #5684AE ΔE 0.053
- Cool Blue #4984B8 ΔE 0.054
- Cadet Blue #5F9EA0 ΔE 0.056
- Silver Lake Blue #778DA9 ΔE 0.059
- Steel Blue #4682B4 ΔE 0.059
Use #3F97BA 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.