#280509
Closest named color: Very Dark Brown (#1D0200). oklch(18.7% 0.059 17.4), rgb(40, 5, 9).
Aa
White text reads best on this color (18.81:1).
About this color
#280509 is a very dark, muted red. In OKLCH its lightness is 19%, its chroma 0.059 and its hue 17°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.040 away. White text reads best on it, at 18.81:1.
| Hue family | Reds |
| Lightness | very dark (19%) |
| Chroma | muted (0.059) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.11:1 |
| White text | 18.81:1 |
Values
| HEX | #280509 |
| RGB | rgb(40, 5, 9) |
| HSL | hsl(353, 78%, 9%) |
| OKLCH | oklch(18.7% 0.059 17.4) |
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 #280509 | 18.81:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #280509 | 1.11:1 | Fails | Lc 0.0 | Not readable |
| #280509 text on white | 18.81:1 | AAA | Lc 104.9 | Preferred for body text |
| #280509 text on black | 1.11:1 | 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
#FCF3F3
oklch(97.1% 0.01 17.3)
-
Step 100
100
#F7E5E5
oklch(93.6% 0.02 17.5)
-
Step 200
200
#F2CFD0
oklch(88.4% 0.039 16)
-
Step 300
300
#EBAFB0
oklch(81% 0.07 17.6)
-
Step 400
400
#DE8387
oklch(70.8% 0.112 17.5)
-
Step 500
500
#D26069
oklch(63.1% 0.144 17.3)
-
Step 600
600
#BD4351
oklch(55.6% 0.156 17.1)
-
Step 700
700
#A33441
oklch(49.2% 0.146 17.6)
-
Step 800
800
#842C36
oklch(42.7% 0.121 17.2)
-
Step 900
900
#6A292F
oklch(37.6% 0.093 17.2)
-
Step 950
950 (this color)
#280509
oklch(18.7% 0.059 17.4)
#280509 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) | #0E0D09 | 0.065 |
| Deuteranopia (no green cones) | #171408 | 0.059 |
| Tritanopia (no blue cones) | #2D0107 | 0.014 |
| Achromatopsia (no color) | #111111 | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #280509
#280509
oklch(18.7% 0.059 17.4)
- #001718
#001718
oklch(18.6% 0.032 198.5)
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 #280509, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.040
- Dark Maroon #3C0008 ΔE 0.049
- Deep Brown #410200 ΔE 0.064
- Almost Black #070D0D ΔE 0.077
- Dark Brown #341C02 ΔE 0.081
- Mahogany #4A0100 ΔE 0.086
- Dark Plum #3F012C ΔE 0.086
- Very Dark Purple #2A0134 ΔE 0.088
Use #280509 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.