#3D4E8E
Closest named color: Dusk Blue (#26538D). oklch(44.3% 0.107 270.4), rgb(61, 78, 142).
Aa
White text reads best on this color (7.83:1).
About this color
#3D4E8E is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.107 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.027 away. White text reads best on it, at 7.83:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.67:1 |
| White text | 7.83:1 |
Values
| HEX | #3D4E8E |
| RGB | rgb(61, 78, 142) |
| HSL | hsl(227, 40%, 40%) |
| OKLCH | oklch(44.3% 0.107 270.4) |
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 #3D4E8E | 7.83:1 | AAA | Lc -91.8 | Preferred for body text |
| Black text on #3D4E8E | 2.67:1 | Fails | Lc 17.0 | Dividers and decoration only |
| #3D4E8E text on white | 7.83:1 | AAA | Lc 87.0 | Fine for body text |
| #3D4E8E text on black | 2.67:1 | Fails | Lc -15.1 | Dividers and decoration only |
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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF6
oklch(93.7% 0.017 267.8)
-
Step 200
200
#D0D9F1
oklch(88.6% 0.034 269.3)
-
Step 300
300
#B1BFEA
oklch(80.8% 0.063 270.8)
-
Step 400
400
#899DE0
oklch(70.7% 0.101 270.9)
-
Step 500
500
#6C84D7
oklch(63.2% 0.128 270.2)
-
Step 600
600
#556CC4
oklch(55.6% 0.139 270.4)
-
Step 700
700
#455AA9
oklch(49.2% 0.128 270)
-
Step 800
800 (this color)
#3D4E8E
oklch(44.3% 0.107 270.4)
-
Step 900
900
#313E6E
oklch(37.7% 0.084 270.5)
-
Step 950
950
#1D2540
oklch(27.1% 0.052 270.2)
#3D4E8E 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) | #325690 | 0.024 |
| Deuteranopia (no green cones) | #284E8D | 0.024 |
| Tritanopia (no blue cones) | #0E5C67 | 0.095 |
| Achromatopsia (no color) | #525252 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D4E8E
#3D4E8E
oklch(44.3% 0.107 270.4)
- #665000
#665000
oklch(44.1% 0.09 90.4)
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 #3D4E8E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.027
- Twilight #4E518B ΔE 0.027
- Denim Blue #3B5B92 ΔE 0.037
- Blueberry #464196 ΔE 0.039
- Dusk #4E5481 ΔE 0.039
- Light Navy Blue #2E5A88 ΔE 0.040
- Cobalt #1E488F ΔE 0.040
- Light Navy #155084 ΔE 0.043
Use #3D4E8E 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.