#661B49
Closest named color: Grape Purple (#5D1451). oklch(36% 0.118 347), rgb(102, 27, 73).
Aa
White text reads best on this color (11.55:1).
About this color
#661B49 is a dark, moderately saturated red. In OKLCH its lightness is 36%, its chroma 0.118 and its hue 347°. Its hue sits on the warm side of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.032 away. White text reads best on it, at 11.55:1.
| Hue family | Reds |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.118) |
| Temperature | warm |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.81:1 |
| White text | 11.55:1 |
Values
| HEX | #661B49 |
| RGB | rgb(102, 27, 73) |
| HSL | hsl(323, 58%, 25%) |
| OKLCH | oklch(36% 0.118 347) |
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 #661B49 | 11.55:1 | AAA | Lc -99.5 | Preferred for body text |
| Black text on #661B49 | 1.81:1 | Fails | Lc 8.2 | Not readable |
| #661B49 text on white | 11.55:1 | AAA | Lc 95.7 | Preferred for body text |
| #661B49 text on black | 1.81:1 | 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
#FCF2F7
oklch(97% 0.013 345.5)
-
Step 100
100
#F8E3ED
oklch(93.6% 0.026 347.1)
-
Step 200
200
#F3CDDF
oklch(88.6% 0.049 347.9)
-
Step 300
300
#ECAACC
oklch(81% 0.088 347)
-
Step 400
400
#DF79B2
oklch(70.7% 0.143 346.7)
-
Step 500
500
#D3529E
oklch(63.1% 0.181 347.1)
-
Step 600
600
#BE3089
oklch(55.6% 0.197 347)
-
Step 700
700
#A42074
oklch(49.1% 0.184 347.3)
-
Step 800
800
#851E5F
oklch(42.7% 0.152 346.9)
-
Step 900
900 (this color)
#661B49
oklch(36% 0.118 347)
-
Step 950
950
#3F142D
oklch(26.9% 0.075 347.3)
#661B49 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) | #25314A | 0.130 |
| Deuteranopia (no green cones) | #3B3E47 | 0.116 |
| Tritanopia (no blue cones) | #6D192F | 0.047 |
| Achromatopsia (no color) | #393939 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #661B49
#661B49
oklch(36% 0.118 347)
- #004935
#004935
oklch(36% 0.073 167.3)
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 #661B49, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.032
- Velvet #750851 ΔE 0.038
- Merlot #730039 ΔE 0.041
- Rich Purple #720058 ΔE 0.046
- Wine #80013F ΔE 0.058
- Red Purple #820747 ΔE 0.060
- Bordeaux #7B002C ΔE 0.064
- Burgundy #610023 ΔE 0.066
Use #661B49 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.