#3B458A
Closest named color: Dark Slate Blue (#483D8B). oklch(41.9% 0.114 274.2), rgb(59, 69, 138).
Aa
White text reads best on this color (8.73:1).
About this color
#3B458A is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.114 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.027 away. White text reads best on it, at 8.73:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.114) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.40:1 |
| White text | 8.73:1 |
Values
| HEX | #3B458A |
| RGB | rgb(59, 69, 138) |
| HSL | hsl(232, 40%, 39%) |
| OKLCH | oklch(41.9% 0.114 274.2) |
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 #3B458A | 8.73:1 | AAA | Lc -94.2 | Preferred for body text |
| Black text on #3B458A | 2.40:1 | Fails | Lc 14.3 | Not readable |
| #3B458A text on white | 8.73:1 | AAA | Lc 89.7 | Fine for body text |
| #3B458A text on black | 2.40:1 | Fails | Lc -12.5 | 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 800.
-
Step 50
50
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E6E9F7
oklch(93.6% 0.019 276.3)
-
Step 200
200
#D1D8F2
oklch(88.5% 0.037 273.7)
-
Step 300
300
#B3BEEC
oklch(80.9% 0.066 274.3)
-
Step 400
400
#8C9BE3
oklch(70.6% 0.107 274.4)
-
Step 500
500
#7181DB
oklch(63.1% 0.136 274.2)
-
Step 600
600
#5A69C9
oklch(55.7% 0.148 273.9)
-
Step 700
700
#4A57AD
oklch(49.1% 0.137 273.8)
-
Step 800
800 (this color)
#3B458A
oklch(41.9% 0.114 274.2)
-
Step 900
900
#343C70
oklch(37.6% 0.089 274.7)
-
Step 950
950
#1E2442
oklch(27.1% 0.056 273.5)
#3B458A 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) | #244E8D | 0.033 |
| Deuteranopia (no green cones) | #184889 | 0.037 |
| Tritanopia (no blue cones) | #0F5461 | 0.100 |
| Achromatopsia (no color) | #4B4B4B | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B458A
#3B458A
oklch(41.9% 0.114 274.2)
- #5C4B00
#5C4B00
oklch(41.8% 0.086 94)
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 #3B458A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.027
- Blueberry #464196 ΔE 0.028
- Cobalt #1E488F ΔE 0.032
- Dusk Blue #26538D ΔE 0.042
- Twilight #4E518B ΔE 0.047
- Light Navy #155084 ΔE 0.047
- Twilight Blue #0A437A ΔE 0.057
- Dusk #4E5481 ΔE 0.058
Use #3B458A 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.