#3E4A7B
Closest named color: Dusk (#4E5481). oklch(42.2% 0.083 272), rgb(62, 74, 123).
Aa
White text reads best on this color (8.50:1).
About this color
#3E4A7B is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.083 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.040 away. White text reads best on it, at 8.50:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.47:1 |
| White text | 8.50:1 |
Values
| HEX | #3E4A7B |
| RGB | rgb(62, 74, 123) |
| HSL | hsl(228, 33%, 36%) |
| OKLCH | oklch(42.2% 0.083 272) |
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 #3E4A7B | 8.50:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #3E4A7B | 2.47:1 | Fails | Lc 14.8 | Not readable |
| #3E4A7B text on white | 8.50:1 | AAA | Lc 89.2 | Fine for body text |
| #3E4A7B text on black | 2.47:1 | Fails | Lc -13.1 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6E9F4
oklch(93.5% 0.015 273.8)
-
Step 200
200
#D3D8EC
oklch(88.4% 0.028 274.6)
-
Step 300
300
#B5BFE1
oklch(80.8% 0.049 272.4)
-
Step 400
400
#8F9ED2
oklch(70.7% 0.078 271.8)
-
Step 500
500
#7485C6
oklch(63% 0.1 272.1)
-
Step 600
600
#5D6EB2
oklch(55.5% 0.108 271.9)
-
Step 700
700
#4D5C99
oklch(49.1% 0.1 271.9)
-
Step 800
800 (this color)
#3E4A7B
oklch(42.2% 0.083 272)
-
Step 900
900
#363F64
oklch(37.7% 0.065 272.6)
-
Step 950
950
#1F253B
oklch(27% 0.042 271.7)
#3E4A7B 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) | #374F7D | 0.016 |
| Deuteranopia (no green cones) | #324A7A | 0.016 |
| Tritanopia (no blue cones) | #26545C | 0.074 |
| Achromatopsia (no color) | #4D4D4D | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3E4A7B
#3E4A7B
oklch(42.2% 0.083 272)
- #5E4C07
#5E4C07
oklch(42.3% 0.083 92.4)
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 #3E4A7B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.040
- Twilight #4E518B ΔE 0.041
- Dusk Blue #26538D ΔE 0.041
- Light Navy #155084 ΔE 0.042
- Light Navy Blue #2E5A88 ΔE 0.048
- Cobalt #1E488F ΔE 0.049
- Dark Slate Blue #483D8B ΔE 0.049
- Deep Sea Blue #015482 ΔE 0.051
Use #3E4A7B 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.