#3B3FA7
Closest named color: Blueberry (#464196). oklch(43% 0.164 275.4), rgb(59, 63, 167).
Aa
White text reads best on this color (8.55:1).
About this color
#3B3FA7 is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.164 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.033 away. White text reads best on it, at 8.55:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.164) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.45:1 |
| White text | 8.55:1 |
Values
| HEX | #3B3FA7 |
| RGB | rgb(59, 63, 167) |
| HSL | hsl(238, 48%, 44%) |
| OKLCH | oklch(43% 0.164 275.4) |
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 #3B3FA7 | 8.55:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #3B3FA7 | 2.45:1 | Fails | Lc 15.1 | Dividers and decoration only |
| #3B3FA7 text on white | 8.55:1 | AAA | Lc 88.9 | Fine for body text |
| #3B3FA7 text on black | 2.45:1 | Fails | Lc -13.3 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FD
oklch(93.6% 0.028 274.7)
-
Step 200
200
#CFD7FD
oklch(88.5% 0.053 275.9)
-
Step 300
300
#AFBCFF
oklch(80.9% 0.096 275.6)
-
Step 400
400
#8796FF
oklch(70.7% 0.154 275.6)
-
Step 500
500
#6C78FD
oklch(63.2% 0.195 275.4)
-
Step 600
600
#575CEC
oklch(55.7% 0.212 275.5)
-
Step 700
700
#474ACD
oklch(49% 0.198 275.3)
-
Step 800
800 (this color)
#3B3FA7
oklch(43% 0.164 275.4)
-
Step 900
900
#313683
oklch(37.6% 0.127 275.6)
-
Step 950
950
#1C214D
oklch(27.1% 0.08 274.8)
#3B3FA7 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) | #0051AA | 0.056 |
| Deuteranopia (no green cones) | #0048A5 | 0.048 |
| Tritanopia (no blue cones) | #00596D | 0.136 |
| Achromatopsia (no color) | #4C4C4C | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B3FA7
#3B3FA7
oklch(43% 0.164 275.4)
- #5F4F00
#5F4F00
oklch(43.1% 0.089 95.6)
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 #3B3FA7, closest first.
No curated palette has a color within ΔE 0.04 of #3B3FA7.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.033
- Sapphire #2138AB ΔE 0.039
- Dark Slate Blue #483D8B ΔE 0.050
- Cobalt #1E488F ΔE 0.055
- Majorelle Blue #3F37C9 ΔE 0.056
- Blue Blue #2242C7 ΔE 0.057
- Blue With A Hint Of Purple #533CC6 ΔE 0.061
- Indigo Blue #3A18B1 ΔE 0.068
Use #3B3FA7 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.