#613F51
Closest named color: Purple Brown (#673A3F). oklch(41.3% 0.054 346.7), rgb(97, 63, 81).
Aa
White text reads best on this color (8.98:1).
About this color
#613F51 is a dark, muted red. In OKLCH its lightness is 41%, its chroma 0.054 and its hue 347°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.030 away. White text reads best on it, at 8.98:1.
| Hue family | Reds |
| Lightness | dark (41%) |
| Chroma | muted (0.054) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.33:1 |
| White text | 8.98:1 |
Values
| HEX | #613F51 |
| RGB | rgb(97, 63, 81) |
| HSL | hsl(328, 21%, 31%) |
| OKLCH | oklch(41.3% 0.054 346.7) |
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 #613F51 | 8.98:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #613F51 | 2.33:1 | Fails | Lc 13.4 | Not readable |
| #613F51 text on white | 8.98:1 | AAA | Lc 90.5 | Preferred for body text |
| #613F51 text on black | 2.33:1 | Fails | Lc -11.8 | 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 800.
-
Step 50
50
#F8F4F6
oklch(97.1% 0.005 345.3)
-
Step 100
100
#EFE7EB
oklch(93.5% 0.01 345.4)
-
Step 200
200
#E2D5DB
oklch(88.5% 0.016 347.7)
-
Step 300
300
#D1B9C5
oklch(81% 0.032 346.1)
-
Step 400
400
#B994A7
oklch(70.6% 0.051 346.2)
-
Step 500
500
#A77A91
oklch(63.1% 0.064 347)
-
Step 600
600
#92627B
oklch(55.5% 0.071 347.1)
-
Step 700
700
#7C5168
oklch(49% 0.066 346.5)
-
Step 800
800 (this color)
#613F51
oklch(41.3% 0.054 346.7)
-
Step 900
900
#523846
oklch(37.5% 0.043 345.8)
-
Step 950
950
#302129
oklch(26.9% 0.027 345.8)
#613F51 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) | #424652 | 0.056 |
| Deuteranopia (no green cones) | #4A4B50 | 0.052 |
| Tritanopia (no blue cones) | #663F45 | 0.022 |
| Achromatopsia (no color) | #494949 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #613F51
#613F51
oklch(41.3% 0.054 346.7)
- #2B5545
#2B5545
oklch(41.4% 0.055 166.9)
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 #613F51, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.030
- Brownish Purple #76424E ΔE 0.043
- Charcoal Grey #3C4142 ΔE 0.073
- Dusty Grape #545775 ΔE 0.078
- Dark Mauve #874C62 ΔE 0.086
- Dusk #4E5481 ΔE 0.088
- Onyx #343A40 ΔE 0.089
- Dark Grey Blue #29465B ΔE 0.089
Use #613F51 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.