#664E4E
Closest named color: Brownish Purple (#76424E). oklch(44.9% 0.032 18.4), rgb(102, 78, 78).
Aa
White text reads best on this color (7.59:1).
About this color
#664E4E is a dark, muted red. In OKLCH its lightness is 45%, its chroma 0.032 and its hue 18°. Its hue sits on the warm side of the wheel. The nearest named color is Brownish Purple (#76424E), ΔE 0.042 away. White text reads best on it, at 7.59:1.
| Hue family | Reds |
| Lightness | dark (45%) |
| Chroma | muted (0.032) |
| Temperature | warm |
| Nearest name | Brownish Purple (#76424E) |
| Black text | 2.76:1 |
| White text | 7.59:1 |
Values
| HEX | #664E4E |
| RGB | rgb(102, 78, 78) |
| HSL | hsl(0, 13%, 35%) |
| OKLCH | oklch(44.9% 0.032 18.4) |
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 #664E4E | 7.59:1 | AAA | Lc -91.2 | Preferred for body text |
| Black text on #664E4E | 2.76:1 | Fails | Lc 17.6 | Dividers and decoration only |
| #664E4E text on white | 7.59:1 | AAA | Lc 86.4 | Fine for body text |
| #664E4E text on black | 2.76:1 | Fails | Lc -15.7 | Dividers and decoration only |
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 800.
-
Step 50
50
#F7F5F5
oklch(97.2% 0.002 17.2)
-
Step 100
100
#EDE8E8
oklch(93.5% 0.005 17.3)
-
Step 200
200
#E0D6D6
oklch(88.4% 0.011 17.4)
-
Step 300
300
#CDBCBC
oklch(80.9% 0.019 17.6)
-
Step 400
400
#B39999
oklch(70.6% 0.031 17.9)
-
Step 500
500
#A08080
oklch(63% 0.04 18.3)
-
Step 600
600
#8B6A6A
oklch(55.7% 0.042 18.5)
-
Step 700
700
#765858
oklch(49.2% 0.04 18.6)
-
Step 800
800 (this color)
#664E4E
oklch(44.9% 0.032 18.4)
-
Step 900
900
#4E3C3C
oklch(37.6% 0.025 18.3)
-
Step 950
950
#2E2323
oklch(26.9% 0.017 18.3)
#664E4E 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) | #52514E | 0.034 |
| Deuteranopia (no green cones) | #58564E | 0.032 |
| Tritanopia (no blue cones) | #6B4C4E | 0.010 |
| Achromatopsia (no color) | #545454 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #664E4E
#664E4E
oklch(44.9% 0.032 18.4)
- #405B5C
#405B5C
oklch(45% 0.032 199)
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 #664E4E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brownish Purple #76424E ΔE 0.042
- Purple Brown #673A3F ΔE 0.054
- Dusty Grape #545775 ΔE 0.065
- Dark Mauve #874C62 ΔE 0.071
- Milk Chocolate #7F4E1E ΔE 0.074
- Slate #516572 ΔE 0.076
- Mud Brown #60460F ΔE 0.078
- Dim Gray #696969 ΔE 0.079
Use #664E4E 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.