#3E4078
Closest named color: Dark Slate Blue (#483D8B). oklch(39.8% 0.093 279.7), rgb(62, 64, 120).
Aa
White text reads best on this color (9.50:1).
About this color
#3E4078 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.093 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.037 away. White text reads best on it, at 9.50:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.20:1 |
| White text | 9.50:1 |
Values
| HEX | #3E4078 |
| RGB | rgb(62, 64, 120) |
| HSL | hsl(238, 32%, 36%) |
| OKLCH | oklch(39.8% 0.093 279.7) |
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 #3E4078 | 9.50:1 | AAA | Lc -96.1 | Preferred for body text |
| Black text on #3E4078 | 2.20:1 | Fails | Lc 12.1 | Not readable |
| #3E4078 text on white | 9.50:1 | AAA | Lc 91.9 | Preferred for body text |
| #3E4078 text on black | 2.20:1 | Fails | Lc -10.5 | 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 900.
-
Step 50
50
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E7E9F8
oklch(93.7% 0.02 279.9)
-
Step 200
200
#D3D7F3
oklch(88.5% 0.039 279.1)
-
Step 300
300
#B7BCEE
oklch(80.8% 0.071 280.2)
-
Step 400
400
#9399E5
oklch(70.8% 0.111 279.7)
-
Step 500
500
#797DDD
oklch(63% 0.143 279.7)
-
Step 600
600
#6464CB
oklch(55.5% 0.156 280.1)
-
Step 700
700
#5353B0
oklch(49.2% 0.144 279.7)
-
Step 800
800
#44448E
oklch(42.7% 0.119 280.1)
-
Step 900
900 (this color)
#3E4078
oklch(39.8% 0.093 279.7)
-
Step 950
950
#212242
oklch(26.9% 0.059 280.3)
#3E4078 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) | #2A487A | 0.032 |
| Deuteranopia (no green cones) | #264377 | 0.032 |
| Tritanopia (no blue cones) | #2A4C56 | 0.081 |
| Achromatopsia (no color) | #464646 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3E4078
#3E4078
oklch(39.8% 0.093 279.7)
- #524800
#524800
oklch(39.9% 0.083 100.2)
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 #3E4078, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.037
- Blueberry #464196 ΔE 0.052
- Cobalt #1E488F ΔE 0.052
- Twilight Blue #0A437A ΔE 0.052
- Light Navy #155084 ΔE 0.058
- Twilight #4E518B ΔE 0.061
- Dusk Blue #26538D ΔE 0.061
- Dark Grey Blue #29465B ΔE 0.065
Use #3E4078 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.