#3F0903
Closest named color: Deep Brown (#410200). oklch(24.2% 0.084 31.7), rgb(63, 9, 3).
Aa
White text reads best on this color (16.77:1).
About this color
#3F0903 is a very dark, moderately saturated red. In OKLCH its lightness is 24%, its chroma 0.084 and its hue 32°. Its hue sits on the warm side of the wheel. The nearest named color is Deep Brown (#410200), ΔE 0.011 away. White text reads best on it, at 16.77:1.
| Hue family | Reds |
| Lightness | very dark (24%) |
| Chroma | moderately saturated (0.084) |
| Temperature | warm |
| Nearest name | Deep Brown (#410200) |
| Black text | 1.25:1 |
| White text | 16.77:1 |
Values
| HEX | #3F0903 |
| RGB | rgb(63, 9, 3) |
| HSL | hsl(6, 91%, 13%) |
| OKLCH | oklch(24.2% 0.084 31.7) |
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 #3F0903 | 16.77:1 | AAA | Lc -105.5 | Preferred for body text |
| Black text on #3F0903 | 1.25:1 | Fails | Lc 0.0 | Not readable |
| #3F0903 text on white | 16.77:1 | AAA | Lc 103.0 | Preferred for body text |
| #3F0903 text on black | 1.25:1 | 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
#FEF2F0
oklch(97% 0.013 28.9)
-
Step 100
100
#FDE3DE
oklch(93.6% 0.03 30.6)
-
Step 200
200
#FCCDC3
oklch(88.6% 0.055 32.1)
-
Step 300
300
#FAA999
oklch(81% 0.099 31.6)
-
Step 400
400
#F3765F
oklch(70.7% 0.159 32)
-
Step 500
500
#EB482E
oklch(63.2% 0.204 31.8)
-
Step 600
600
#D32200
oklch(55.6% 0.212 31.7)
-
Step 700
700
#B31B00
oklch(49.2% 0.188 31.7)
-
Step 800
800
#941400
oklch(42.7% 0.164 31.6)
-
Step 900
900
#78190A
oklch(37.6% 0.132 31.7)
-
Step 950
950 (this color)
#3F0903
oklch(24.2% 0.084 31.7)
#3F0903 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) | #1A1602 | 0.089 |
| Deuteranopia (no green cones) | #272201 | 0.082 |
| Tritanopia (no blue cones) | #460008 | 0.023 |
| Achromatopsia (no color) | #1D1D1D | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F0903
#3F0903
oklch(24.2% 0.084 31.7)
- #00252B
#00252B
oklch(24.2% 0.042 210.7)
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 #3F0903, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Brown #410200 ΔE 0.011
- Dark Maroon #3C0008 ΔE 0.025
- Mahogany #4A0100 ΔE 0.026
- Chocolate Brown #411900 ΔE 0.038
- Dark Brown #341C02 ΔE 0.050
- Dark Plum #3F012C ΔE 0.077
- Aubergine #3D0734 ΔE 0.087
- Eggplant #380835 ΔE 0.091
Use #3F0903 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.