#3B3F97
Closest named color: Blueberry (#464196). oklch(41.7% 0.141 276.4), rgb(59, 63, 151).
Aa
White text reads best on this color (8.95:1).
About this color
#3B3F97 is a dark, vivid blue. In OKLCH its lightness is 42%, its chroma 0.141 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.018 away. White text reads best on it, at 8.95:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | vivid (0.141) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.34:1 |
| White text | 8.95:1 |
Values
| HEX | #3B3F97 |
| RGB | rgb(59, 63, 151) |
| HSL | hsl(237, 44%, 41%) |
| OKLCH | oklch(41.7% 0.141 276.4) |
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 #3B3F97 | 8.95:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #3B3F97 | 2.34:1 | Fails | Lc 13.8 | Not readable |
| #3B3F97 text on white | 8.95:1 | AAA | Lc 90.2 | Preferred for body text |
| #3B3F97 text on black | 2.34:1 | Fails | Lc -12.1 | Not readable |
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 800.
-
Step 50
50
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9FA
oklch(93.6% 0.023 275.4)
-
Step 200
200
#D1D7F8
oklch(88.5% 0.046 277.3)
-
Step 300
300
#B2BCF6
oklch(80.8% 0.083 276.8)
-
Step 400
400
#8B98F2
oklch(70.7% 0.132 276.2)
-
Step 500
500
#717BED
oklch(63% 0.169 276.6)
-
Step 600
600
#5B61DC
oklch(55.6% 0.184 276.5)
-
Step 700
700
#4B50BF
oklch(49.2% 0.171 276.2)
-
Step 800
800 (this color)
#3B3F97
oklch(41.7% 0.141 276.4)
-
Step 900
900
#34397B
oklch(37.8% 0.11 276.5)
-
Step 950
950
#1E2248
oklch(27% 0.07 276.2)
#3B3F97 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) | #004D9A | 0.053 |
| Deuteranopia (no green cones) | #004595 | 0.049 |
| Tritanopia (no blue cones) | #005464 | 0.123 |
| Achromatopsia (no color) | #494949 | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B3F97
#3B3F97
oklch(41.7% 0.141 276.4)
- #5A4B00
#5A4B00
oklch(41.6% 0.086 95.8)
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 #3B3F97, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.018
- Dark Slate Blue #483D8B ΔE 0.028
- Cobalt #1E488F ΔE 0.040
- Sapphire #2138AB ΔE 0.050
- Dusk Blue #26538D ΔE 0.060
- Twilight #4E518B ΔE 0.065
- Light Navy #155084 ΔE 0.067
- Twilight Blue #0A437A ΔE 0.070
Use #3B3F97 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.