#613A33
Closest named color: Purple Brown (#673A3F). oklch(39.3% 0.057 30.8), rgb(97, 58, 51).
Aa
White text reads best on this color (9.71:1).
About this color
#613A33 is a dark, muted red. In OKLCH its lightness is 39%, its chroma 0.057 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.023 away. White text reads best on it, at 9.71:1.
| Hue family | Reds |
| Lightness | dark (39%) |
| Chroma | muted (0.057) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.16:1 |
| White text | 9.71:1 |
Values
| HEX | #613A33 |
| RGB | rgb(97, 58, 51) |
| HSL | hsl(9, 31%, 29%) |
| OKLCH | oklch(39.3% 0.057 30.8) |
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 #613A33 | 9.71:1 | AAA | Lc -96.6 | Preferred for body text |
| Black text on #613A33 | 2.16:1 | Fails | Lc 11.6 | Not readable |
| #613A33 text on white | 9.71:1 | AAA | Lc 92.4 | Preferred for body text |
| #613A33 text on black | 2.16:1 | Fails | Lc -10.1 | 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
#E8D4D0
oklch(88.5% 0.023 31.1)
-
Step 300
300
#DBB7B0
oklch(80.9% 0.043 30.9)
-
Step 400
400
#C89187
oklch(70.7% 0.069 30.5)
-
Step 500
500
#B87569
oklch(63% 0.087 30.7)
-
Step 600
600
#A45D51
oklch(55.7% 0.095 30.5)
-
Step 700
700
#8C4C41
oklch(49.1% 0.089 30.8)
-
Step 800
800
#723F36
oklch(42.8% 0.073 31)
-
Step 900
900 (this color)
#613A33
oklch(39.3% 0.057 30.8)
-
Step 950
950
#36201C
oklch(27.1% 0.035 30.8)
#613A33 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) | #433F32 | 0.057 |
| Deuteranopia (no green cones) | #4C4732 | 0.053 |
| Tritanopia (no blue cones) | #693438 | 0.025 |
| Achromatopsia (no color) | #444444 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #613A33
#613A33
oklch(39.3% 0.057 30.8)
- #184E57
#184E57
oklch(39.3% 0.057 210.6)
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 #613A33, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.023
- Chestnut #742802 ΔE 0.061
- Brownish Purple #76424E ΔE 0.061
- Mud Brown #60460F ΔE 0.063
- Charcoal Grey #3C4142 ΔE 0.068
- Onyx #343A40 ΔE 0.084
- Reddy Brown #6E1005 ΔE 0.085
- Red Brown #8B2E16 ΔE 0.086
Use #613A33 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.