#66383F
Closest named color: Purple Brown (#673A3F). oklch(40% 0.066 10.7), rgb(102, 56, 63).
Aa
White text reads best on this color (9.53:1).
About this color
#66383F is a dark, muted red. In OKLCH its lightness is 40%, its chroma 0.066 and its hue 11°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.006 away. White text reads best on it, at 9.53:1.
| Hue family | Reds |
| Lightness | dark (40%) |
| Chroma | muted (0.066) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.20:1 |
| White text | 9.53:1 |
Values
| HEX | #66383F |
| RGB | rgb(102, 56, 63) |
| HSL | hsl(351, 29%, 31%) |
| OKLCH | oklch(40% 0.066 10.7) |
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 #66383F | 9.53:1 | AAA | Lc -96.1 | Preferred for body text |
| Black text on #66383F | 2.20:1 | Fails | Lc 12.1 | Not readable |
| #66383F text on white | 9.53:1 | AAA | Lc 91.9 | Preferred for body text |
| #66383F text on black | 2.20:1 | Fails | Lc -10.5 | 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
#FAF4F4
oklch(97.2% 0.006 17.3)
-
Step 100
100
#F3E6E7
oklch(93.6% 0.014 12)
-
Step 200
200
#EBD2D5
oklch(88.5% 0.028 9.4)
-
Step 300
300
#DEB4B9
oklch(80.9% 0.049 10.2)
-
Step 400
400
#CC8C95
oklch(70.6% 0.079 10)
-
Step 500
500
#BE6F7B
oklch(63.2% 0.101 10.6)
-
Step 600
600
#A95664
oklch(55.7% 0.109 10.6)
-
Step 700
700
#914653
oklch(49.2% 0.102 10.6)
-
Step 800
800
#763A44
oklch(42.8% 0.084 10.8)
-
Step 900
900 (this color)
#66383F
oklch(40% 0.066 10.7)
-
Step 950
950
#381E21
oklch(27.1% 0.041 12.7)
#66383F 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) | #40403F | 0.072 |
| Deuteranopia (no green cones) | #4C493E | 0.067 |
| Tritanopia (no blue cones) | #6E343B | 0.018 |
| Achromatopsia (no color) | #454545 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66383F
#66383F
oklch(40% 0.066 10.7)
- #095350
#095350
oklch(40.1% 0.066 190.5)
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 #66383F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.006
- Brownish Purple #76424E ΔE 0.047
- Chestnut #742802 ΔE 0.069
- Charcoal Grey #3C4142 ΔE 0.078
- Mud Brown #60460F ΔE 0.084
- Red Brown #8B2E16 ΔE 0.085
- Wine Red #7B0323 ΔE 0.086
- Bordeaux #7B002C ΔE 0.088
Use #66383F 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.