#613337
Closest named color: Purple Brown (#673A3F). oklch(38.1% 0.066 15.2), rgb(97, 51, 55).
Aa
White text reads best on this color (10.30:1).
About this color
#613337 is a dark, muted red. In OKLCH its lightness is 38%, its chroma 0.066 and its hue 15°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.024 away. White text reads best on it, at 10.30:1.
| Hue family | Reds |
| Lightness | dark (38%) |
| Chroma | muted (0.066) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.03:1 |
| White text | 10.30:1 |
Values
| HEX | #613337 |
| RGB | rgb(97, 51, 55) |
| HSL | hsl(355, 31%, 29%) |
| OKLCH | oklch(38.1% 0.066 15.2) |
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 #613337 | 10.30:1 | AAA | Lc -97.8 | Preferred for body text |
| Black text on #613337 | 2.03:1 | Fails | Lc 10.2 | Not readable |
| #613337 text on white | 10.30:1 | AAA | Lc 93.7 | Preferred for body text |
| #613337 text on black | 2.03:1 | Fails | Lc -8.8 | 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 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
#EBD2D3
oklch(88.5% 0.028 14.9)
-
Step 300
300
#DFB4B6
oklch(80.9% 0.05 15.1)
-
Step 400
400
#CD8C90
oklch(70.6% 0.08 15.2)
-
Step 500
500
#BF6F75
oklch(63.2% 0.102 15.6)
-
Step 600
600
#AA565E
oklch(55.7% 0.11 15.3)
-
Step 700
700
#92464D
oklch(49.2% 0.103 15.9)
-
Step 800
800
#763A40
oklch(42.7% 0.084 15)
-
Step 900
900 (this color)
#613337
oklch(38.1% 0.066 15.2)
-
Step 950
950
#381E20
oklch(27.1% 0.041 15.2)
#613337 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) | #3C3B37 | 0.072 |
| Deuteranopia (no green cones) | #474436 | 0.067 |
| Tritanopia (no blue cones) | #692E35 | 0.019 |
| Achromatopsia (no color) | #404040 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #613337
#613337
oklch(38.1% 0.066 15.2)
- #004D4D
#004D4D
oklch(38% 0.065 194.8)
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 #613337, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.024
- Chestnut #742802 ΔE 0.064
- Brownish Purple #76424E ΔE 0.066
- Charcoal Grey #3C4142 ΔE 0.074
- Reddy Brown #6E1005 ΔE 0.075
- Wine Red #7B0323 ΔE 0.081
- Bordeaux #7B002C ΔE 0.083
- Onyx #343A40 ΔE 0.083
Use #613337 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.