#583837
Closest named color: Purple Brown (#673A3F). oklch(37.8% 0.046 21.4), rgb(88, 56, 55).
Aa
White text reads best on this color (10.31:1).
About this color
#583837 is a dark, muted red. In OKLCH its lightness is 38%, its chroma 0.046 and its hue 21°. 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 10.31:1.
| Hue family | Reds |
| Lightness | dark (38%) |
| Chroma | muted (0.046) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.03:1 |
| White text | 10.31:1 |
Values
| HEX | #583837 |
| RGB | rgb(88, 56, 55) |
| HSL | hsl(2, 23%, 28%) |
| OKLCH | oklch(37.8% 0.046 21.4) |
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 #583837 | 10.31:1 | AAA | Lc -97.9 | Preferred for body text |
| Black text on #583837 | 2.03:1 | Fails | Lc 10.1 | Not readable |
| #583837 text on white | 10.31:1 | AAA | Lc 93.8 | Preferred for body text |
| #583837 text on black | 2.03:1 | Fails | Lc -8.7 | 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
#F0E7E7
oklch(93.5% 0.01 17.3)
-
Step 200
200
#E6D4D3
oklch(88.4% 0.02 21.4)
-
Step 300
300
#D6B8B7
oklch(80.8% 0.035 20.2)
-
Step 400
400
#C19391
oklch(70.6% 0.056 21.4)
-
Step 500
500
#B07977
oklch(63.2% 0.069 21.5)
-
Step 600
600
#9B615F
oklch(55.6% 0.076 21.9)
-
Step 700
700
#85504F
oklch(49.2% 0.072 21.1)
-
Step 800
800
#6C4241
oklch(42.8% 0.059 21.3)
-
Step 900
900 (this color)
#583837
oklch(37.8% 0.046 21.4)
-
Step 950
950
#332120
oklch(27% 0.028 22.7)
#583837 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) | #3E3D37 | 0.049 |
| Deuteranopia (no green cones) | #464337 | 0.045 |
| Tritanopia (no blue cones) | #5E3438 | 0.016 |
| Achromatopsia (no color) | #404040 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #583837
#583837
oklch(37.8% 0.046 21.4)
- #20494C
#20494C
oklch(37.7% 0.046 201.8)
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 #583837, 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 0.053
- Onyx #343A40 ΔE 0.065
- Brownish Purple #76424E ΔE 0.074
- Chestnut #742802 ΔE 0.074
- Mud Brown #60460F ΔE 0.075
- Dark Slate Gray #2F4F4F ΔE 0.087
- Charcoal #264653 ΔE 0.088
Use #583837 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.