#581501
Closest named color: Reddy Brown (#6E1005). oklch(30.8% 0.102 36.7), rgb(88, 21, 1).
Aa
White text reads best on this color (13.79:1).
About this color
#581501 is a dark, moderately saturated red. In OKLCH its lightness is 31%, its chroma 0.102 and its hue 37°. Its hue sits on the warm side of the wheel. The nearest named color is Reddy Brown (#6E1005), ΔE 0.050 away. White text reads best on it, at 13.79:1.
| Hue family | Reds |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.102) |
| Temperature | warm |
| Nearest name | Reddy Brown (#6E1005) |
| Black text | 1.52:1 |
| White text | 13.79:1 |
Values
| HEX | #581501 |
| RGB | rgb(88, 21, 1) |
| HSL | hsl(14, 98%, 17%) |
| OKLCH | oklch(30.8% 0.102 36.7) |
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 #581501 | 13.79:1 | AAA | Lc -102.7 | Preferred for body text |
| Black text on #581501 | 1.52:1 | Fails | Lc 0.0 | Not readable |
| #581501 text on white | 13.79:1 | AAA | Lc 99.5 | Preferred for body text |
| #581501 text on black | 1.52:1 | 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
#FFF2EF
oklch(97.1% 0.015 33.1)
-
Step 100
100
#FFE3DB
oklch(93.7% 0.033 36.5)
-
Step 200
200
#FFCCBD
oklch(88.6% 0.062 37)
-
Step 300
300
#FFA78E
oklch(80.9% 0.111 36.6)
-
Step 400
400
#FF6C41
oklch(70.7% 0.189 36.8)
-
Step 500
500
#ED4600
oklch(63.1% 0.212 36.8)
-
Step 600
600
#C83A00
oklch(55.6% 0.186 36.9)
-
Step 700
700
#AA2F00
oklch(49.1% 0.166 36.6)
-
Step 800
800
#8C2500
oklch(42.6% 0.144 36.6)
-
Step 900
900
#761E00
oklch(37.7% 0.127 36.7)
-
Step 950
950 (this color)
#581501
oklch(30.8% 0.102 36.7)
#581501 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) | #2A2300 | 0.104 |
| Deuteranopia (no green cones) | #3A3200 | 0.093 |
| Tritanopia (no blue cones) | #620011 | 0.039 |
| Achromatopsia (no color) | #2D2D2D | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #581501
#581501
oklch(30.8% 0.102 36.7)
- #003642
#003642
oklch(30.7% 0.055 217.9)
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 #581501, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Reddy Brown #6E1005 ΔE 0.050
- Claret #680018 ΔE 0.050
- Mahogany #4A0100 ΔE 0.052
- Chocolate Brown #411900 ΔE 0.052
- Burgundy #610023 ΔE 0.059
- Blood #770001 ΔE 0.069
- Deep Brown #410200 ΔE 0.071
- Chestnut #742802 ΔE 0.080
Use #581501 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.