#28184E
Closest named color: Dark Indigo (#1F0954). oklch(26.5% 0.095 292.4), rgb(40, 24, 78).
Aa
White text reads best on this color (15.77:1).
About this color
#28184E is a dark, moderately saturated purple. In OKLCH its lightness is 26%, its chroma 0.095 and its hue 292°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.039 away. White text reads best on it, at 15.77:1.
| Hue family | Purples |
| Lightness | dark (26%) |
| Chroma | moderately saturated (0.095) |
| Temperature | in between |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.33:1 |
| White text | 15.77:1 |
Values
| HEX | #28184E |
| RGB | rgb(40, 24, 78) |
| HSL | hsl(258, 53%, 20%) |
| OKLCH | oklch(26.5% 0.095 292.4) |
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 #28184E | 15.77:1 | AAA | Lc -105.1 | Preferred for body text |
| Black text on #28184E | 1.33:1 | Fails | Lc 0.0 | Not readable |
| #28184E text on white | 15.77:1 | AAA | Lc 102.5 | Preferred for body text |
| #28184E text on black | 1.33:1 | Fails | Lc 0.0 | 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 950.
-
Step 50
50
#F5F4FF
oklch(97.1% 0.015 290.3)
-
Step 100
100
#EAE6FE
oklch(93.5% 0.032 293.4)
-
Step 200
200
#D9D2FF
oklch(88.4% 0.062 292.2)
-
Step 300
300
#C2B4FF
oklch(80.9% 0.105 292.4)
-
Step 400
400
#A589FF
oklch(70.7% 0.169 292.5)
-
Step 500
500
#9265FF
oklch(63.2% 0.218 292.5)
-
Step 600
600
#7F3FF4
oklch(55.6% 0.249 292.4)
-
Step 700
700
#6C2ED5
oklch(49.1% 0.232 292.4)
-
Step 800
800
#5729AC
oklch(42.6% 0.192 292.2)
-
Step 900
900
#472988
oklch(37.7% 0.149 292.2)
-
Step 950
950 (this color)
#28184E
oklch(26.5% 0.095 292.4)
#28184E 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) | #002350 | 0.057 |
| Deuteranopia (no green cones) | #00224D | 0.058 |
| Tritanopia (no blue cones) | #1D2530 | 0.077 |
| Achromatopsia (no color) | #232323 | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28184E
#28184E
oklch(26.5% 0.095 292.4)
- #262800
#262800
oklch(26.6% 0.059 112.6)
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 #28184E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.039
- Dark Purple #35063E ΔE 0.053
- Deep Purple #36013F ΔE 0.059
- Oxford Blue #1B263B ΔE 0.062
- Eggplant #380835 ΔE 0.065
- Midnight Purple #280137 ΔE 0.067
- Midnight Blue #191970 ΔE 0.067
- Very Dark Purple #2A0134 ΔE 0.070
Use #28184E 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.