#66190F
Closest named color: Reddy Brown (#6E1005). oklch(34.2% 0.111 30.8), rgb(102, 25, 15).
Aa
White text reads best on this color (12.27:1).
About this color
#66190F is a dark, moderately saturated red. In OKLCH its lightness is 34%, its chroma 0.111 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Reddy Brown (#6E1005), ΔE 0.019 away. White text reads best on it, at 12.27:1.
| Hue family | Reds |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.111) |
| Temperature | warm |
| Nearest name | Reddy Brown (#6E1005) |
| Black text | 1.71:1 |
| White text | 12.27:1 |
Values
| HEX | #66190F |
| RGB | rgb(102, 25, 15) |
| HSL | hsl(7, 74%, 23%) |
| OKLCH | oklch(34.2% 0.111 30.8) |
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 #66190F | 12.27:1 | AAA | Lc -100.6 | Preferred for body text |
| Black text on #66190F | 1.71:1 | Fails | Lc 0.0 | Not readable |
| #66190F text on white | 12.27:1 | AAA | Lc 96.9 | Preferred for body text |
| #66190F text on black | 1.71:1 | 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
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#FAE4E0
oklch(93.6% 0.025 29.9)
-
Step 200
200
#F6CFC7
oklch(88.6% 0.046 31.6)
-
Step 300
300
#F2ADA0
oklch(80.9% 0.084 30.9)
-
Step 400
400
#E87E6C
oklch(70.7% 0.134 30.8)
-
Step 500
500
#DD5845
oklch(63% 0.17 30.6)
-
Step 600
600
#C93724
oklch(55.6% 0.186 30.9)
-
Step 700
700
#AD2717
oklch(49% 0.173 30.7)
-
Step 800
800
#8D2316
oklch(42.7% 0.144 30.6)
-
Step 900
900 (this color)
#66190F
oklch(34.2% 0.111 30.8)
-
Step 950
950
#431610
oklch(27% 0.071 30)
#66190F 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) | #302A0D | 0.117 |
| Deuteranopia (no green cones) | #433B0B | 0.107 |
| Tritanopia (no blue cones) | #710017 | 0.036 |
| Achromatopsia (no color) | #353535 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66190F
#66190F
oklch(34.2% 0.111 30.8)
- #00404A
#00404A
oklch(34.1% 0.059 212)
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 #66190F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Reddy Brown #6E1005 ΔE 0.019
- Claret #680018 ΔE 0.035
- Blood #770001 ΔE 0.039
- Chestnut #742802 ΔE 0.049
- Burgundy #610023 ΔE 0.053
- Maroon #800000 ΔE 0.056
- Wine Red #7B0323 ΔE 0.056
- Bordeaux #7B002C ΔE 0.065
Use #66190F 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.