#3D4291
Closest named color: Blueberry (#464196). oklch(42% 0.128 276.6), rgb(61, 66, 145).
Aa
White text reads best on this color (8.79:1).
About this color
#3D4291 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.128 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.016 away. White text reads best on it, at 8.79:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.128) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.38:1 |
| White text | 8.79:1 |
Values
| HEX | #3D4291 |
| RGB | rgb(61, 66, 145) |
| HSL | hsl(236, 41%, 40%) |
| OKLCH | oklch(42% 0.128 276.6) |
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 #3D4291 | 8.79:1 | AAA | Lc -94.3 | Preferred for body text |
| Black text on #3D4291 | 2.38:1 | Fails | Lc 14.1 | Not readable |
| #3D4291 text on white | 8.79:1 | AAA | Lc 89.8 | Fine for body text |
| #3D4291 text on black | 2.38:1 | Fails | Lc -12.4 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E6E9F9
oklch(93.6% 0.022 277.5)
-
Step 200
200
#D1D7F5
oklch(88.4% 0.042 276.6)
-
Step 300
300
#B3BDF1
oklch(80.9% 0.074 276.1)
-
Step 400
400
#8D99EB
oklch(70.7% 0.121 276.5)
-
Step 500
500
#737EE4
oklch(63.2% 0.152 276.5)
-
Step 600
600
#5D64D2
oklch(55.5% 0.167 276.8)
-
Step 700
700
#4D53B6
oklch(49.2% 0.154 276.5)
-
Step 800
800 (this color)
#3D4291
oklch(42% 0.128 276.6)
-
Step 900
900
#353A75
oklch(37.6% 0.1 276.8)
-
Step 950
950
#1F2345
oklch(27.1% 0.063 276.3)
#3D4291 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) | #134E94 | 0.047 |
| Deuteranopia (no green cones) | #00478F | 0.051 |
| Tritanopia (no blue cones) | #0C5463 | 0.112 |
| Achromatopsia (no color) | #4A4A4A | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D4291
#3D4291
oklch(42% 0.128 276.6)
- #5B4C00
#5B4C00
oklch(41.9% 0.086 96)
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 #3D4291, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.016
- Dark Slate Blue #483D8B ΔE 0.022
- Cobalt #1E488F ΔE 0.037
- Dusk Blue #26538D ΔE 0.052
- Twilight #4E518B ΔE 0.053
- Light Navy #155084 ΔE 0.059
- Sapphire #2138AB ΔE 0.062
- Twilight Blue #0A437A ΔE 0.065
Use #3D4291 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.