#28183F
Closest named color: Dark Purple (#35063E). oklch(25.2% 0.072 300.2), rgb(40, 24, 63).
Aa
White text reads best on this color (16.24:1).
About this color
#28183F is a dark, moderately saturated purple. In OKLCH its lightness is 25%, its chroma 0.072 and its hue 300°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Purple (#35063E), ΔE 0.045 away. White text reads best on it, at 16.24:1.
| Hue family | Purples |
| Lightness | dark (25%) |
| Chroma | moderately saturated (0.072) |
| Temperature | in between |
| Nearest name | Dark Purple (#35063E) |
| Black text | 1.29:1 |
| White text | 16.24:1 |
Values
| HEX | #28183F |
| RGB | rgb(40, 24, 63) |
| HSL | hsl(265, 45%, 17%) |
| OKLCH | oklch(25.2% 0.072 300.2) |
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 #28183F | 16.24:1 | AAA | Lc -105.6 | Preferred for body text |
| Black text on #28183F | 1.29:1 | Fails | Lc 0.0 | Not readable |
| #28183F text on white | 16.24:1 | AAA | Lc 103.0 | Preferred for body text |
| #28183F text on black | 1.29:1 | 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
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#ECE6F8
oklch(93.5% 0.025 301.1)
-
Step 200
200
#DED3F5
oklch(88.6% 0.048 300.2)
-
Step 300
300
#C9B4F0
oklch(80.8% 0.086 300.5)
-
Step 400
400
#AE8BE9
oklch(70.6% 0.138 300.1)
-
Step 500
500
#9B6BE2
oklch(63.1% 0.176 300)
-
Step 600
600
#874FCF
oklch(55.5% 0.19 300.4)
-
Step 700
700
#723FB4
oklch(49.1% 0.177 299.9)
-
Step 800
800
#5D3591
oklch(42.7% 0.146 300.3)
-
Step 900
900
#4C2F74
oklch(37.6% 0.115 300.4)
-
Step 950
950 (this color)
#28183F
oklch(25.2% 0.072 300.2)
#28183F 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) | #092040 | 0.052 |
| Deuteranopia (no green cones) | #0E203E | 0.047 |
| Tritanopia (no blue cones) | #232028 | 0.057 |
| Achromatopsia (no color) | #202020 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28183F
#28183F
oklch(25.2% 0.072 300.2)
- #1E2600
#1E2600
oklch(25.2% 0.06 120.9)
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 #28183F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Purple #35063E ΔE 0.045
- Oxford Blue #1B263B ΔE 0.049
- Eggplant #380835 ΔE 0.050
- Deep Purple #36013F ΔE 0.054
- Dark #1B2431 ΔE 0.055
- Midnight Purple #280137 ΔE 0.055
- Dark Indigo #1F0954 ΔE 0.056
- Very Dark Purple #2A0134 ΔE 0.057
Use #28183F 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.