#511501
Closest named color: Chocolate Brown (#411900). oklch(29.4% 0.094 38.2), rgb(81, 21, 1).
Aa
White text reads best on this color (14.40:1).
About this color
#511501 is a dark, moderately saturated red. In OKLCH its lightness is 29%, its chroma 0.094 and its hue 38°. Its hue sits on the warm side of the wheel. The nearest named color is Chocolate Brown (#411900), ΔE 0.037 away. White text reads best on it, at 14.40:1.
| Hue family | Reds |
| Lightness | dark (29%) |
| Chroma | moderately saturated (0.094) |
| Temperature | warm |
| Nearest name | Chocolate Brown (#411900) |
| Black text | 1.45:1 |
| White text | 14.40:1 |
Values
| HEX | #511501 |
| RGB | rgb(81, 21, 1) |
| HSL | hsl(15, 98%, 16%) |
| OKLCH | oklch(29.4% 0.094 38.2) |
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 #511501 | 14.40:1 | AAA | Lc -103.5 | Preferred for body text |
| Black text on #511501 | 1.45:1 | Fails | Lc 0.0 | Not readable |
| #511501 text on white | 14.40:1 | AAA | Lc 100.4 | Preferred for body text |
| #511501 text on black | 1.45:1 | 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
#FFF2EE
oklch(97% 0.015 37.9)
-
Step 100
100
#FEE3DB
oklch(93.6% 0.032 37.1)
-
Step 200
200
#FFCCBC
oklch(88.6% 0.062 38.1)
-
Step 300
300
#FFA78B
oklch(80.9% 0.112 38.4)
-
Step 400
400
#FA7145
oklch(70.7% 0.178 38.1)
-
Step 500
500
#EA4B00
oklch(63.1% 0.206 38.2)
-
Step 600
600
#C63E00
oklch(55.6% 0.181 38.2)
-
Step 700
700
#A73300
oklch(49% 0.16 38.2)
-
Step 800
800
#8A2900
oklch(42.7% 0.139 38.4)
-
Step 900
900
#742100
oklch(37.7% 0.122 38.4)
-
Step 950
950 (this color)
#511501
oklch(29.4% 0.094 38.2)
#511501 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) | #272100 | 0.095 |
| Deuteranopia (no green cones) | #362F00 | 0.086 |
| Tritanopia (no blue cones) | #5A0211 | 0.039 |
| Achromatopsia (no color) | #2A2A2A | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #511501
#511501
oklch(29.4% 0.094 38.2)
- #00323E
#00323E
oklch(29.3% 0.053 219.2)
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 #511501, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chocolate Brown #411900 ΔE 0.037
- Mahogany #4A0100 ΔE 0.040
- Deep Brown #410200 ΔE 0.057
- Claret #680018 ΔE 0.063
- Dark Brown #341C02 ΔE 0.066
- Burgundy #610023 ΔE 0.066
- Reddy Brown #6E1005 ΔE 0.066
- Dark Maroon #3C0008 ΔE 0.075
Use #511501 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.