#280309
Closest named color: Very Dark Brown (#1D0200). oklch(18.3% 0.063 14.7), rgb(40, 3, 9).
Aa
White text reads best on this color (18.96:1).
About this color
#280309 is a very dark, muted red. In OKLCH its lightness is 18%, its chroma 0.063 and its hue 15°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.039 away. White text reads best on it, at 18.96:1.
| Hue family | Reds |
| Lightness | very dark (18%) |
| Chroma | muted (0.063) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.10:1 |
| White text | 18.96:1 |
Values
| HEX | #280309 |
| RGB | rgb(40, 3, 9) |
| HSL | hsl(350, 86%, 8%) |
| OKLCH | oklch(18.3% 0.063 14.7) |
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 #280309 | 18.96:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #280309 | 1.10:1 | Fails | Lc 0.0 | Not readable |
| #280309 text on white | 18.96:1 | AAA | Lc 104.9 | Preferred for body text |
| #280309 text on black | 1.10:1 | 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
#F8E4E5
oklch(93.5% 0.022 14.1)
-
Step 200
200
#F4CFD0
oklch(88.6% 0.042 16.1)
-
Step 300
300
#EDADB1
oklch(80.8% 0.075 14.7)
-
Step 400
400
#E18089
oklch(70.8% 0.12 14.7)
-
Step 500
500
#D65C6B
oklch(63.2% 0.154 15.1)
-
Step 600
600
#C13D53
oklch(55.6% 0.168 14.9)
-
Step 700
700
#A62E44
oklch(49.1% 0.155 14.6)
-
Step 800
800
#872838
oklch(42.7% 0.129 14.8)
-
Step 900
900
#6D2630
oklch(37.7% 0.101 14.9)
-
Step 950
950 (this color)
#280309
oklch(18.3% 0.063 14.7)
#280309 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) | #0C0B09 | 0.070 |
| Deuteranopia (no green cones) | #161308 | 0.063 |
| Tritanopia (no blue cones) | #2D0005 | 0.014 |
| Achromatopsia (no color) | #101010 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #280309
#280309
oklch(18.3% 0.063 14.7)
- #001616
#001616
oklch(18.1% 0.031 194.8)
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 #280309, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.039
- Dark Maroon #3C0008 ΔE 0.051
- Deep Brown #410200 ΔE 0.067
- Almost Black #070D0D ΔE 0.080
- Dark Plum #3F012C ΔE 0.086
- Very Dark Purple #2A0134 ΔE 0.087
- Dark Brown #341C02 ΔE 0.087
- Mahogany #4A0100 ΔE 0.088
Use #280309 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.