#280403
Closest named color: Very Dark Brown (#1D0200). oklch(18.3% 0.062 28), rgb(40, 4, 3).
Aa
White text reads best on this color (18.93:1).
About this color
#280403 is a very dark, muted red. In OKLCH its lightness is 18%, its chroma 0.062 and its hue 28°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.034 away. White text reads best on it, at 18.93:1.
| Hue family | Reds |
| Lightness | very dark (18%) |
| Chroma | muted (0.062) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.10:1 |
| White text | 18.93:1 |
Values
| HEX | #280403 |
| RGB | rgb(40, 4, 3) |
| HSL | hsl(2, 86%, 8%) |
| OKLCH | oklch(18.3% 0.062 28) |
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 #280403 | 18.93:1 | AAA | Lc -107.1 | Preferred for body text |
| Black text on #280403 | 1.10:1 | Fails | Lc 0.0 | Not readable |
| #280403 text on white | 18.93:1 | AAA | Lc 104.9 | Preferred for body text |
| #280403 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
#F3D0CA
oklch(88.6% 0.04 29.4)
-
Step 300
300
#EDAFA6
oklch(80.9% 0.074 28.1)
-
Step 400
400
#E08377
oklch(70.7% 0.117 28.2)
-
Step 500
500
#D56054
oklch(63.1% 0.15 28)
-
Step 600
600
#C04238
oklch(55.5% 0.163 28.1)
-
Step 700
700
#A6332B
oklch(49.2% 0.152 28)
-
Step 800
800
#872B25
oklch(42.7% 0.127 27.5)
-
Step 900
900
#6C2922
oklch(37.7% 0.097 28.5)
-
Step 950
950 (this color)
#280403
oklch(18.3% 0.062 28)
#280403 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) | #0E0B03 | 0.066 |
| Deuteranopia (no green cones) | #171402 | 0.062 |
| Tritanopia (no blue cones) | #2D0004 | 0.016 |
| Achromatopsia (no color) | #111111 | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #280403
#280403
oklch(18.3% 0.062 28)
- #00161A
#00161A
oklch(18.3% 0.032 209.8)
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 #280403, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.034
- Dark Maroon #3C0008 ΔE 0.052
- Deep Brown #410200 ΔE 0.064
- Almost Black #070D0D ΔE 0.078
- Dark Brown #341C02 ΔE 0.079
- Mahogany #4A0100 ΔE 0.086
- Chocolate Brown #411900 ΔE 0.090
- Rich Navy #001219 ΔE 0.094
Use #280403 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.