#280303
Closest named color: Very Dark Brown (#1D0200). oklch(18.1% 0.064 26.4), rgb(40, 3, 3).
Aa
White text reads best on this color (19.01:1).
About this color
#280303 is a very dark, muted red. In OKLCH its lightness is 18%, its chroma 0.064 and its hue 26°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.033 away. White text reads best on it, at 19.01:1.
| Hue family | Reds |
| Lightness | very dark (18%) |
| Chroma | muted (0.064) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.10:1 |
| White text | 19.01:1 |
Values
| HEX | #280303 |
| RGB | rgb(40, 3, 3) |
| HSL | hsl(0, 86%, 8%) |
| OKLCH | oklch(18.1% 0.064 26.4) |
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 #280303 | 19.01:1 | AAA | Lc -107.1 | Preferred for body text |
| Black text on #280303 | 1.10:1 | Fails | Lc 0.0 | Not readable |
| #280303 text on white | 19.01:1 | AAA | Lc 104.9 | Preferred for body text |
| #280303 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
#FCF3F2
oklch(97.1% 0.01 25.1)
-
Step 100
100
#F8E5E2
oklch(93.6% 0.021 28.3)
-
Step 200
200
#F4CFCB
oklch(88.5% 0.042 25.3)
-
Step 300
300
#EEAEA7
oklch(80.9% 0.076 25.9)
-
Step 400
400
#E28178
oklch(70.6% 0.121 26.2)
-
Step 500
500
#D75D55
oklch(63% 0.155 26.2)
-
Step 600
600
#C23F3A
oklch(55.5% 0.168 26.4)
-
Step 700
700
#A7302C
oklch(49.1% 0.156 26.6)
-
Step 800
800
#882926
oklch(42.7% 0.13 26.1)
-
Step 900
900
#6D2723
oklch(37.6% 0.101 26.3)
-
Step 950
950 (this color)
#280303
oklch(18.1% 0.064 26.4)
#280303 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) | #0D0B03 | 0.069 |
| Deuteranopia (no green cones) | #171302 | 0.062 |
| Tritanopia (no blue cones) | #2D0003 | 0.014 |
| Achromatopsia (no color) | #101010 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #280303
#280303
oklch(18.1% 0.064 26.4)
- #001619
#001619
oklch(18.3% 0.031 206.1)
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 #280303, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.033
- Dark Maroon #3C0008 ΔE 0.052
- Deep Brown #410200 ΔE 0.065
- Almost Black #070D0D ΔE 0.079
- Dark Brown #341C02 ΔE 0.082
- Mahogany #4A0100 ΔE 0.087
- Chocolate Brown #411900 ΔE 0.093
- Rich Navy #001219 ΔE 0.095
Use #280303 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.