#3E428A
Closest named color: Dark Slate Blue (#483D8B). oklch(41.5% 0.118 277.6), rgb(62, 66, 138).
Aa
White text reads best on this color (8.93:1).
About this color
#3E428A is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.118 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.019 away. White text reads best on it, at 8.93:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.35:1 |
| White text | 8.93:1 |
Values
| HEX | #3E428A |
| RGB | rgb(62, 66, 138) |
| HSL | hsl(237, 38%, 39%) |
| OKLCH | oklch(41.5% 0.118 277.6) |
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 #3E428A | 8.93:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #3E428A | 2.35:1 | Fails | Lc 13.7 | Not readable |
| #3E428A text on white | 8.93:1 | AAA | Lc 90.3 | Preferred for body text |
| #3E428A text on black | 2.35:1 | Fails | Lc -12.0 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E6E9F7
oklch(93.6% 0.019 276.3)
-
Step 200
200
#D2D7F3
oklch(88.4% 0.039 277.6)
-
Step 300
300
#B5BDED
oklch(80.9% 0.068 277.4)
-
Step 400
400
#909AE5
oklch(70.8% 0.11 277.4)
-
Step 500
500
#767FDD
oklch(63.2% 0.14 277.4)
-
Step 600
600
#6066CA
oklch(55.6% 0.152 277.6)
-
Step 700
700
#5054AF
oklch(49.1% 0.142 277.9)
-
Step 800
800 (this color)
#3E428A
oklch(41.5% 0.118 277.6)
-
Step 900
900
#373B71
oklch(37.7% 0.091 277.9)
-
Step 950
950
#202342
oklch(27% 0.057 277.6)
#3E428A 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) | #1D4D8D | 0.043 |
| Deuteranopia (no green cones) | #134788 | 0.046 |
| Tritanopia (no blue cones) | #1B525F | 0.103 |
| Achromatopsia (no color) | #4A4A4A | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3E428A
#3E428A
oklch(41.5% 0.118 277.6)
- #594B00
#594B00
oklch(41.5% 0.085 96.8)
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 #3E428A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.019
- Blueberry #464196 ΔE 0.024
- Cobalt #1E488F ΔE 0.038
- Dusk Blue #26538D ΔE 0.051
- Twilight #4E518B ΔE 0.051
- Light Navy #155084 ΔE 0.055
- Twilight Blue #0A437A ΔE 0.060
- Dusk #4E5481 ΔE 0.063
Use #3E428A 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.