#3F170F
Closest named color: Chocolate Brown (#411900). oklch(26.5% 0.065 33), rgb(63, 23, 15).
Aa
White text reads best on this color (15.66:1).
About this color
#3F170F is a dark, muted red. In OKLCH its lightness is 26%, its chroma 0.065 and its hue 33°. Its hue sits on the warm side of the wheel. The nearest named color is Chocolate Brown (#411900), ΔE 0.021 away. White text reads best on it, at 15.66:1.
| Hue family | Reds |
| Lightness | dark (26%) |
| Chroma | muted (0.065) |
| Temperature | warm |
| Nearest name | Chocolate Brown (#411900) |
| Black text | 1.34:1 |
| White text | 15.66:1 |
Values
| HEX | #3F170F |
| RGB | rgb(63, 23, 15) |
| HSL | hsl(10, 62%, 15%) |
| OKLCH | oklch(26.5% 0.065 33) |
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 #3F170F | 15.66:1 | AAA | Lc -105.0 | Preferred for body text |
| Black text on #3F170F | 1.34:1 | Fails | Lc 0.0 | Not readable |
| #3F170F text on white | 15.66:1 | AAA | Lc 102.3 | Preferred for body text |
| #3F170F text on black | 1.34:1 | 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
#FCF3F1
oklch(97.1% 0.01 32.5)
-
Step 100
100
#F8E5E0
oklch(93.6% 0.022 35.1)
-
Step 200
200
#F4D0C7
oklch(88.6% 0.043 34.3)
-
Step 300
300
#EEAFA1
oklch(80.9% 0.077 32.9)
-
Step 400
400
#E2826E
oklch(70.6% 0.123 32.7)
-
Step 500
500
#D75F47
oklch(63.1% 0.156 33)
-
Step 600
600
#C34128
oklch(55.7% 0.17 32.9)
-
Step 700
700
#A8311A
oklch(49.1% 0.159 32.9)
-
Step 800
800
#882A18
oklch(42.6% 0.132 32.9)
-
Step 900
900
#6E281A
oklch(37.8% 0.103 33.1)
-
Step 950
950 (this color)
#3F170F
oklch(26.5% 0.065 33)
#3F170F 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) | #221E0E | 0.065 |
| Deuteranopia (no green cones) | #2B270E | 0.062 |
| Tritanopia (no blue cones) | #460F15 | 0.026 |
| Achromatopsia (no color) | #232323 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F170F
#3F170F
oklch(26.5% 0.065 33)
- #002B32
#002B32
oklch(26.5% 0.046 211.3)
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 #3F170F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chocolate Brown #411900 ΔE 0.021
- Dark Brown #341C02 ΔE 0.036
- Deep Brown #410200 ΔE 0.040
- Mahogany #4A0100 ΔE 0.040
- Dark Maroon #3C0008 ΔE 0.050
- Jet #212529 ΔE 0.073
- Dark Plum #3F012C ΔE 0.079
- Aubergine #3D0734 ΔE 0.084
Use #3F170F 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.