#3D4D91
Closest named color: Dusk Blue (#26538D). oklch(44.3% 0.113 271.2), rgb(61, 77, 145).
Aa
White text reads best on this color (7.86:1).
About this color
#3D4D91 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.113 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.030 away. White text reads best on it, at 7.86:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.113) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.66:1 |
| White text | 7.86:1 |
Values
| HEX | #3D4D91 |
| RGB | rgb(61, 77, 145) |
| HSL | hsl(229, 41%, 40%) |
| OKLCH | oklch(44.3% 0.113 271.2) |
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 #3D4D91 | 7.86:1 | AAA | Lc -91.8 | Preferred for body text |
| Black text on #3D4D91 | 2.66:1 | Fails | Lc 16.9 | Dividers and decoration only |
| #3D4D91 text on white | 7.86:1 | AAA | Lc 87.1 | Fine for body text |
| #3D4D91 text on black | 2.66:1 | Fails | Lc -15.0 | 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
#E5E9F7
oklch(93.5% 0.019 273.2)
-
Step 200
200
#D0D8F2
oklch(88.4% 0.037 272)
-
Step 300
300
#B1BFEC
oklch(80.9% 0.066 271.4)
-
Step 400
400
#889DE3
oklch(70.8% 0.106 270.8)
-
Step 500
500
#6C83DB
oklch(63.2% 0.135 271.1)
-
Step 600
600
#556AC8
oklch(55.5% 0.147 271.4)
-
Step 700
700
#4558AD
oklch(49% 0.137 271.1)
-
Step 800
800 (this color)
#3D4D91
oklch(44.3% 0.113 271.2)
-
Step 900
900
#313D70
oklch(37.6% 0.088 271.6)
-
Step 950
950
#1D2442
oklch(27% 0.057 272.2)
#3D4D91 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) | #2E5594 | 0.026 |
| Deuteranopia (no green cones) | #234E90 | 0.028 |
| Tritanopia (no blue cones) | #075C68 | 0.100 |
| Achromatopsia (no color) | #525252 | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D4D91
#3D4D91
oklch(44.3% 0.113 271.2)
- #665100
#665100
oklch(44.4% 0.091 91.5)
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 #3D4D91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.030
- Twilight #4E518B ΔE 0.030
- Blueberry #464196 ΔE 0.035
- Cobalt #1E488F ΔE 0.039
- Denim Blue #3B5B92 ΔE 0.040
- Dark Slate Blue #483D8B ΔE 0.043
- Dusk #4E5481 ΔE 0.044
- Light Navy Blue #2E5A88 ΔE 0.045
Use #3D4D91 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.