#613C33
Closest named color: Purple Brown (#673A3F). oklch(39.7% 0.055 34.4), rgb(97, 60, 51).
Aa
White text reads best on this color (9.53:1).
About this color
#613C33 is a dark, muted red. In OKLCH its lightness is 40%, its chroma 0.055 and its hue 34°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.025 away. White text reads best on it, at 9.53:1.
| Hue family | Reds |
| Lightness | dark (40%) |
| Chroma | muted (0.055) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.20:1 |
| White text | 9.53:1 |
Values
| HEX | #613C33 |
| RGB | rgb(97, 60, 51) |
| HSL | hsl(12, 31%, 29%) |
| OKLCH | oklch(39.7% 0.055 34.4) |
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 #613C33 | 9.53:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #613C33 | 2.20:1 | Fails | Lc 12.0 | Not readable |
| #613C33 text on white | 9.53:1 | AAA | Lc 91.9 | Preferred for body text |
| #613C33 text on black | 2.20:1 | Fails | Lc -10.5 | 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
#F9F4F3
oklch(97.1% 0.006 31.1)
-
Step 100
100
#F2E7E5
oklch(93.6% 0.012 29.9)
-
Step 200
200
#E8D4CF
oklch(88.5% 0.023 34.3)
-
Step 300
300
#DAB8AF
oklch(81% 0.041 35.2)
-
Step 400
400
#C69285
oklch(70.6% 0.066 34.5)
-
Step 500
500
#B67767
oklch(63.1% 0.083 34.9)
-
Step 600
600
#A25F4F
oklch(55.7% 0.092 34.3)
-
Step 700
700
#8A4E3F
oklch(49.1% 0.085 34.9)
-
Step 800
800
#704034
oklch(42.6% 0.07 34.9)
-
Step 900
900 (this color)
#613C33
oklch(39.7% 0.055 34.4)
-
Step 950
950
#35201B
oklch(26.9% 0.034 34)
#613C33 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) | #454132 | 0.053 |
| Deuteranopia (no green cones) | #4E4833 | 0.048 |
| Tritanopia (no blue cones) | #69373A | 0.025 |
| Achromatopsia (no color) | #454545 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #613C33
#613C33
oklch(39.7% 0.055 34.4)
- #1E4F59
#1E4F59
oklch(39.9% 0.055 213.3)
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 #613C33, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.025
- Mud Brown #60460F ΔE 0.058
- Brownish Purple #76424E ΔE 0.060
- Chestnut #742802 ΔE 0.063
- Charcoal Grey #3C4142 ΔE 0.067
- Onyx #343A40 ΔE 0.084
- Red Brown #8B2E16 ΔE 0.086
- Green Brown #544E03 ΔE 0.087
Use #613C33 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.