#280003
Closest named color: Very Dark Brown (#1D0200). oklch(17.5% 0.07 22.1), rgb(40, 0, 3).
Aa
White text reads best on this color (19.23:1).
About this color
#280003 is a very dark, moderately saturated red. In OKLCH its lightness is 17%, its chroma 0.070 and its hue 22°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.032 away. White text reads best on it, at 19.23:1.
| Hue family | Reds |
| Lightness | very dark (17%) |
| Chroma | moderately saturated (0.070) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.09:1 |
| White text | 19.23:1 |
Values
| HEX | #280003 |
| RGB | rgb(40, 0, 3) |
| HSL | hsl(356, 100%, 8%) |
| OKLCH | oklch(17.5% 0.07 22.1) |
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 #280003 | 19.23:1 | AAA | Lc -107.1 | Preferred for body text |
| Black text on #280003 | 1.09:1 | Fails | Lc 0.0 | Not readable |
| #280003 text on white | 19.23:1 | AAA | Lc 104.9 | Preferred for body text |
| #280003 text on black | 1.09:1 | 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
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#FAE4E3
oklch(93.6% 0.024 20.7)
-
Step 200
200
#F7CECB
oklch(88.6% 0.047 23)
-
Step 300
300
#F2ACA8
oklch(81% 0.083 22.7)
-
Step 400
400
#E87C7A
oklch(70.7% 0.134 22.1)
-
Step 500
500
#DE5558
oklch(63.1% 0.172 22.2)
-
Step 600
600
#C9343E
oklch(55.7% 0.185 22.3)
-
Step 700
700
#AD2430
oklch(49.1% 0.172 22.2)
-
Step 800
800
#8D2129
oklch(42.8% 0.143 22)
-
Step 900
900
#712225
oklch(37.7% 0.111 22.1)
-
Step 950
950 (this color)
#280003
oklch(17.5% 0.07 22.1)
#280003 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) | #0A0803 | 0.078 |
| Deuteranopia (no green cones) | #151202 | 0.072 |
| Tritanopia (no blue cones) | #2D0001 | 0.015 |
| Achromatopsia (no color) | #0E0E0E | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #280003
#280003
oklch(17.5% 0.07 22.1)
- #001416
#001416
oklch(17.4% 0.03 202.8)
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 #280003, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.032
- Dark Maroon #3C0008 ΔE 0.054
- Deep Brown #410200 ΔE 0.069
- Almost Black #070D0D ΔE 0.083
- Mahogany #4A0100 ΔE 0.091
- Dark Brown #341C02 ΔE 0.092
- Dark Plum #3F012C ΔE 0.096
- Very Dark Purple #2A0134 ΔE 0.099
Use #280003 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.