#661F06
Closest named color: Reddy Brown (#6E1005). oklch(34.8% 0.107 37.8), rgb(102, 31, 6).
Aa
White text reads best on this color (11.90:1).
About this color
#661F06 is a dark, moderately saturated red. In OKLCH its lightness is 35%, its chroma 0.107 and its hue 38°. Its hue sits on the warm side of the wheel. The nearest named color is Reddy Brown (#6E1005), ΔE 0.026 away. White text reads best on it, at 11.90:1.
| Hue family | Reds |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.107) |
| Temperature | warm |
| Nearest name | Reddy Brown (#6E1005) |
| Black text | 1.76:1 |
| White text | 11.90:1 |
Values
| HEX | #661F06 |
| RGB | rgb(102, 31, 6) |
| HSL | hsl(16, 89%, 21%) |
| OKLCH | oklch(34.8% 0.107 37.8) |
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 #661F06 | 11.90:1 | AAA | Lc -100.1 | Preferred for body text |
| Black text on #661F06 | 1.76:1 | Fails | Lc 7.5 | Not readable |
| #661F06 text on white | 11.90:1 | AAA | Lc 96.4 | Preferred for body text |
| #661F06 text on black | 1.76:1 | 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 900.
-
Step 50
50
#FCF3F0
oklch(97% 0.011 39.4)
-
Step 100
100
#F9E5DF
oklch(93.6% 0.023 37.4)
-
Step 200
200
#F5D0C4
oklch(88.6% 0.045 38.8)
-
Step 300
300
#EFAF9B
oklch(80.9% 0.081 38.1)
-
Step 400
400
#E48264
oklch(70.7% 0.129 37.8)
-
Step 500
500
#DA5E37
oklch(63.2% 0.165 37.7)
-
Step 600
600
#C53F08
oklch(55.6% 0.179 37.8)
-
Step 700
700
#A83200
oklch(49.1% 0.162 37.8)
-
Step 800
800
#8A2903
oklch(42.7% 0.138 37.8)
-
Step 900
900 (this color)
#661F06
oklch(34.8% 0.107 37.8)
-
Step 950
950
#41180B
oklch(26.9% 0.068 38)
#661F06 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) | #342D02 | 0.109 |
| Deuteranopia (no green cones) | #453D03 | 0.099 |
| Tritanopia (no blue cones) | #71091B | 0.045 |
| Achromatopsia (no color) | #373737 | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #661F06
#661F06
oklch(34.8% 0.107 37.8)
- #004250
#004250
oklch(35% 0.063 217.7)
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 #661F06, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Reddy Brown #6E1005 ΔE 0.026
- Chestnut #742802 ΔE 0.039
- Blood #770001 ΔE 0.045
- Claret #680018 ΔE 0.051
- Maroon #800000 ΔE 0.058
- Wine Red #7B0323 ΔE 0.065
- Burgundy #610023 ΔE 0.068
- Bordeaux #7B002C ΔE 0.075
Use #661F06 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.