#28184A
Closest named color: Dark Indigo (#1F0954). oklch(26.1% 0.089 294.1), rgb(40, 24, 74).
Aa
White text reads best on this color (15.91:1).
About this color
#28184A is a dark, moderately saturated purple. In OKLCH its lightness is 26%, its chroma 0.089 and its hue 294°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.042 away. White text reads best on it, at 15.91:1.
| Hue family | Purples |
| Lightness | dark (26%) |
| Chroma | moderately saturated (0.089) |
| Temperature | in between |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.31:1 |
| White text | 15.91:1 |
Values
| HEX | #28184A |
| RGB | rgb(40, 24, 74) |
| HSL | hsl(259, 51%, 19%) |
| OKLCH | oklch(26.1% 0.089 294.1) |
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 #28184A | 15.91:1 | AAA | Lc -105.3 | Preferred for body text |
| Black text on #28184A | 1.31:1 | Fails | Lc 0.0 | Not readable |
| #28184A text on white | 15.91:1 | AAA | Lc 102.6 | Preferred for body text |
| #28184A text on black | 1.31:1 | 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
#F6F4FE
oklch(97.2% 0.013 295.3)
-
Step 100
100
#EAE6FD
oklch(93.5% 0.031 293.8)
-
Step 200
200
#DBD2FD
oklch(88.5% 0.059 294.8)
-
Step 300
300
#C4B4FE
oklch(81% 0.104 293.9)
-
Step 400
400
#A888FE
oklch(70.7% 0.169 294.2)
-
Step 500
500
#9564FB
oklch(63% 0.215 294.4)
-
Step 600
600
#8144EA
oklch(55.5% 0.233 294.3)
-
Step 700
700
#6D34CC
oklch(49.1% 0.217 293.9)
-
Step 800
800
#592DA5
oklch(42.7% 0.18 294.2)
-
Step 900
900
#482B83
oklch(37.7% 0.14 293.7)
-
Step 950
950 (this color)
#28184A
oklch(26.1% 0.089 294.1)
#28184A 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) | #00234C | 0.058 |
| Deuteranopia (no green cones) | #002149 | 0.058 |
| Tritanopia (no blue cones) | #1F232E | 0.070 |
| Achromatopsia (no color) | #222222 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28184A
#28184A
oklch(26.1% 0.089 294.1)
- #242700
#242700
oklch(26.1% 0.059 114.1)
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 #28184A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.042
- Dark Purple #35063E ΔE 0.049
- Deep Purple #36013F ΔE 0.056
- Oxford Blue #1B263B ΔE 0.058
- Eggplant #380835 ΔE 0.060
- Midnight Purple #280137 ΔE 0.063
- Very Dark Purple #2A0134 ΔE 0.065
- Aubergine #3D0734 ΔE 0.068
Use #28184A 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.