#583B37
Closest named color: Purple Brown (#673A3F). oklch(38.4% 0.042 27.9), rgb(88, 59, 55).
Aa
White text reads best on this color (10.02:1).
About this color
#583B37 is a dark, muted red. In OKLCH its lightness is 38%, its chroma 0.042 and its hue 28°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.033 away. White text reads best on it, at 10.02:1.
| Hue family | Reds |
| Lightness | dark (38%) |
| Chroma | muted (0.042) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.09:1 |
| White text | 10.02:1 |
Values
| HEX | #583B37 |
| RGB | rgb(88, 59, 55) |
| HSL | hsl(7, 23%, 28%) |
| OKLCH | oklch(38.4% 0.042 27.9) |
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 #583B37 | 10.02:1 | AAA | Lc -97.3 | Preferred for body text |
| Black text on #583B37 | 2.09:1 | Fails | Lc 10.8 | Not readable |
| #583B37 text on white | 10.02:1 | AAA | Lc 93.2 | Preferred for body text |
| #583B37 text on black | 2.09:1 | Fails | Lc -9.3 | 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
#F8F4F4
oklch(97% 0.004 17.2)
-
Step 100
100
#F0E8E6
oklch(93.7% 0.009 34.3)
-
Step 200
200
#E5D5D3
oklch(88.5% 0.018 26.1)
-
Step 300
300
#D4B9B5
oklch(80.8% 0.032 27.8)
-
Step 400
400
#BE958F
oklch(70.6% 0.05 28)
-
Step 500
500
#AD7B74
oklch(63.1% 0.064 27.9)
-
Step 600
600
#98635C
oklch(55.5% 0.07 27.8)
-
Step 700
700
#82524C
oklch(49.1% 0.066 27.5)
-
Step 800
800
#6A433E
oklch(42.6% 0.055 27.6)
-
Step 900
900 (this color)
#583B37
oklch(38.4% 0.042 27.9)
-
Step 950
950
#32221F
oklch(27.1% 0.025 30.8)
#583B37 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) | #413F37 | 0.043 |
| Deuteranopia (no green cones) | #484437 | 0.038 |
| Tritanopia (no blue cones) | #5E373A | 0.018 |
| Achromatopsia (no color) | #424242 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #583B37
#583B37
oklch(38.4% 0.042 27.9)
- #264A4F
#264A4F
oklch(38.4% 0.042 207.2)
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 #583B37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.033
- Charcoal Grey #3C4142 ΔE 0.051
- Onyx #343A40 ΔE 0.066
- Mud Brown #60460F ΔE 0.068
- Brownish Purple #76424E ΔE 0.072
- Chestnut #742802 ΔE 0.075
- Dark Slate Gray #2F4F4F ΔE 0.081
- Charcoal #264653 ΔE 0.085
Use #583B37 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.