#4D438B
Closest named color: Dark Slate Blue (#483D8B). oklch(43% 0.115 286.9), rgb(77, 67, 139).
Aa
White text reads best on this color (8.42:1).
About this color
#4D438B is a dark, moderately saturated purple. In OKLCH its lightness is 43%, its chroma 0.115 and its hue 287°. 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 8.42:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.49:1 |
| White text | 8.42:1 |
Values
| HEX | #4D438B |
| RGB | rgb(77, 67, 139) |
| HSL | hsl(248, 35%, 40%) |
| OKLCH | oklch(43% 0.115 286.9) |
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 #4D438B | 8.42:1 | AAA | Lc -93.4 | Preferred for body text |
| Black text on #4D438B | 2.49:1 | Fails | Lc 15.1 | Dividers and decoration only |
| #4D438B text on white | 8.42:1 | AAA | Lc 88.9 | Fine for body text |
| #4D438B text on black | 2.49:1 | Fails | Lc -13.3 | 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
#F5F5FB
oklch(97.2% 0.008 286.3)
-
Step 100
100
#E8E8F7
oklch(93.5% 0.02 286)
-
Step 200
200
#D7D6F1
oklch(88.5% 0.037 287.3)
-
Step 300
300
#BDBBEB
oklch(81% 0.067 286.7)
-
Step 400
400
#9C96E1
oklch(70.7% 0.108 286.9)
-
Step 500
500
#857AD8
oklch(63.1% 0.138 287.1)
-
Step 600
600
#6F61C5
oklch(55.5% 0.15 286.9)
-
Step 700
700
#5D50AA
oklch(49% 0.139 286.7)
-
Step 800
800 (this color)
#4D438B
oklch(43% 0.115 286.9)
-
Step 900
900
#3F386E
oklch(37.6% 0.09 287.2)
-
Step 950
950
#252141
oklch(27% 0.058 287.5)
#4D438B 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) | #244F8E | 0.057 |
| Deuteranopia (no green cones) | #234B89 | 0.056 |
| Tritanopia (no blue cones) | #3A5260 | 0.097 |
| Achromatopsia (no color) | #4D4D4D | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4D438B
#4D438B
oklch(43% 0.115 286.9)
- #565300
#565300
oklch(43.1% 0.093 107.3)
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 #4D438B, 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 0.023
- Twilight #4E518B ΔE 0.039
- Dusk #4E5481 ΔE 0.054
- Cobalt #1E488F ΔE 0.059
- Rebecca Purple #663399 ΔE 0.060
- Dusk Blue #26538D ΔE 0.061
- Denim Blue #3B5B92 ΔE 0.067
Use #4D438B 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.