#613F43
Closest named color: Purple Brown (#673A3F). oklch(40.8% 0.048 11.7), rgb(97, 63, 67).
Aa
White text reads best on this color (9.12:1).
About this color
#613F43 is a dark, muted red. In OKLCH its lightness is 41%, its chroma 0.048 and its hue 12°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.016 away. White text reads best on it, at 9.12:1.
| Hue family | Reds |
| Lightness | dark (41%) |
| Chroma | muted (0.048) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.30:1 |
| White text | 9.12:1 |
Values
| HEX | #613F43 |
| RGB | rgb(97, 63, 67) |
| HSL | hsl(353, 21%, 31%) |
| OKLCH | oklch(40.8% 0.048 11.7) |
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 #613F43 | 9.12:1 | AAA | Lc -95.3 | Preferred for body text |
| Black text on #613F43 | 2.30:1 | Fails | Lc 13.0 | Not readable |
| #613F43 text on white | 9.12:1 | AAA | Lc 90.9 | Preferred for body text |
| #613F43 text on black | 2.30:1 | Fails | Lc -11.4 | 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
#F8F4F5
oklch(97.1% 0.004 360)
-
Step 100
100
#EFE8E8
oklch(93.6% 0.008 17.3)
-
Step 200
200
#E3D5D6
oklch(88.5% 0.016 12.5)
-
Step 300
300
#D2BABC
oklch(81% 0.028 12)
-
Step 400
400
#BB9699
oklch(70.8% 0.045 12.8)
-
Step 500
500
#A97B80
oklch(63% 0.058 11.6)
-
Step 600
600
#94646A
oklch(55.6% 0.063 11.1)
-
Step 700
700
#7E5358
oklch(49.1% 0.058 11.8)
-
Step 800
800 (this color)
#613F43
oklch(40.8% 0.048 11.7)
-
Step 900
900
#54393C
oklch(37.7% 0.039 11.7)
-
Step 950
950
#312223
oklch(27.1% 0.023 14.3)
#613F43 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) | #454443 | 0.051 |
| Deuteranopia (no green cones) | #4D4B42 | 0.049 |
| Tritanopia (no blue cones) | #673C40 | 0.013 |
| Achromatopsia (no color) | #484848 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #613F43
#613F43
oklch(40.8% 0.048 11.7)
- #275250
#275250
oklch(40.7% 0.048 191.5)
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 #613F43, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.016
- Brownish Purple #76424E ΔE 0.046
- Charcoal Grey #3C4142 ΔE 0.066
- Mud Brown #60460F ΔE 0.075
- Chestnut #742802 ΔE 0.081
- Onyx #343A40 ΔE 0.084
- Dark Slate Gray #2F4F4F ΔE 0.086
- Dusty Grape #545775 ΔE 0.091
Use #613F43 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.