#661739
Closest named color: Merlot (#730039). oklch(34.9% 0.115 358.9), rgb(102, 23, 57).
Aa
White text reads best on this color (12.02:1).
About this color
#661739 is a dark, moderately saturated red. In OKLCH its lightness is 35%, its chroma 0.115 and its hue 359°. Its hue sits on the warm side of the wheel. The nearest named color is Merlot (#730039), ΔE 0.032 away. White text reads best on it, at 12.02:1.
| Hue family | Reds |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.115) |
| Temperature | warm |
| Nearest name | Merlot (#730039) |
| Black text | 1.74:1 |
| White text | 12.02:1 |
Values
| HEX | #661739 |
| RGB | rgb(102, 23, 57) |
| HSL | hsl(334, 63%, 25%) |
| OKLCH | oklch(34.9% 0.115 358.9) |
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 #661739 | 12.02:1 | AAA | Lc -100.2 | Preferred for body text |
| Black text on #661739 | 1.74:1 | Fails | Lc 7.4 | Not readable |
| #661739 text on white | 12.02:1 | AAA | Lc 96.5 | Preferred for body text |
| #661739 text on black | 1.74:1 | 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
#FDF2F5
oklch(97.1% 0.012 358.8)
-
Step 100
100
#F9E3E9
oklch(93.5% 0.025 359.2)
-
Step 200
200
#F5CDD8
oklch(88.6% 0.047 359.7)
-
Step 300
300
#F0A9BF
oklch(80.8% 0.088 359)
-
Step 400
400
#E4799F
oklch(70.7% 0.138 358.7)
-
Step 500
500
#D95187
oklch(63% 0.177 358.9)
-
Step 600
600
#C42E71
oklch(55.5% 0.192 358.8)
-
Step 700
700
#A91E5E
oklch(49% 0.179 359.1)
-
Step 800
800
#891D4D
oklch(42.6% 0.148 358.9)
-
Step 900
900 (this color)
#661739
oklch(34.9% 0.115 358.9)
-
Step 950
950
#411426
oklch(27% 0.073 358.3)
#661739 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) | #282D3A | 0.129 |
| Deuteranopia (no green cones) | #3D3C37 | 0.117 |
| Tritanopia (no blue cones) | #6F0C26 | 0.035 |
| Achromatopsia (no color) | #363636 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #661739
#661739
oklch(34.9% 0.115 358.9)
- #00453B
#00453B
oklch(35% 0.064 179)
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 #661739, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Merlot #730039 ΔE 0.032
- Burgundy #610023 ΔE 0.042
- Bordeaux #7B002C ΔE 0.049
- Claret #680018 ΔE 0.050
- Grape Purple #5D1451 ΔE 0.051
- Velvet #750851 ΔE 0.054
- Wine Red #7B0323 ΔE 0.055
- Wine #80013F ΔE 0.057
Use #661739 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.