#604B40
Closest named color: Purple Brown (#673A3F). oklch(43.2% 0.034 49.1), rgb(96, 75, 64).
Aa
White text reads best on this color (8.14:1).
About this color
#604B40 is a dark, muted brown. In OKLCH its lightness is 43%, its chroma 0.034 and its hue 49°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.049 away. White text reads best on it, at 8.14:1.
| Hue family | Browns |
| Lightness | dark (43%) |
| Chroma | muted (0.034) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.57:1 |
| White text | 8.14:1 |
Values
| HEX | #604B40 |
| RGB | rgb(96, 75, 64) |
| HSL | hsl(21, 20%, 31%) |
| OKLCH | oklch(43.2% 0.034 49.1) |
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 #604B40 | 8.14:1 | AAA | Lc -92.8 | Preferred for body text |
| Black text on #604B40 | 2.57:1 | Fails | Lc 15.8 | Dividers and decoration only |
| #604B40 text on white | 8.14:1 | AAA | Lc 88.2 | Fine for body text |
| #604B40 text on black | 2.57:1 | Fails | Lc -14.0 | 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
#F7F5F4
oklch(97.1% 0.003 48.7)
-
Step 100
100
#EDE9E6
oklch(93.6% 0.006 59.6)
-
Step 200
200
#DFD7D3
oklch(88.4% 0.01 48.6)
-
Step 300
300
#CCBDB6
oklch(80.9% 0.02 46.8)
-
Step 400
400
#B29B90
oklch(70.7% 0.032 47.2)
-
Step 500
500
#9E8374
oklch(63.1% 0.04 50.7)
-
Step 600
600
#896C5D
oklch(55.6% 0.044 48.7)
-
Step 700
700
#745A4C
oklch(49% 0.041 49.7)
-
Step 800
800 (this color)
#604B40
oklch(43.2% 0.034 49.1)
-
Step 900
900
#4E3E35
oklch(37.8% 0.027 50.9)
-
Step 950
950
#2D241F
oklch(26.9% 0.016 50.7)
#604B40 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) | #514D3F | 0.027 |
| Deuteranopia (no green cones) | #555140 | 0.025 |
| Tritanopia (no blue cones) | #664748 | 0.023 |
| Achromatopsia (no color) | #4F4F4F | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #604B40
#604B40
oklch(43.2% 0.034 49.1)
- #3D545F
#3D545F
oklch(43.1% 0.033 229)
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 #604B40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.049
- Mud Brown #60460F ΔE 0.055
- Brownish Purple #76424E ΔE 0.056
- Milk Chocolate #7F4E1E ΔE 0.070
- Charcoal Grey #3C4142 ΔE 0.073
- Dark Slate Gray #2F4F4F ΔE 0.074
- Olive Brown #645403 ΔE 0.074
- Green Brown #544E03 ΔE 0.074
Use #604B40 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.