#603F3D
Closest named color: Purple Brown (#673A3F). oklch(40.5% 0.047 23.2), rgb(96, 63, 61).
Aa
White text reads best on this color (9.22:1).
About this color
#603F3D is a dark, muted red. In OKLCH its lightness is 40%, its chroma 0.047 and its hue 23°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.020 away. White text reads best on it, at 9.22:1.
| Hue family | Reds |
| Lightness | dark (40%) |
| Chroma | muted (0.047) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.27:1 |
| White text | 9.22:1 |
Values
| HEX | #603F3D |
| RGB | rgb(96, 63, 61) |
| HSL | hsl(3, 22%, 31%) |
| OKLCH | oklch(40.5% 0.047 23.2) |
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 #603F3D | 9.22:1 | AAA | Lc -95.5 | Preferred for body text |
| Black text on #603F3D | 2.27:1 | Fails | Lc 12.8 | Not readable |
| #603F3D text on white | 9.22:1 | AAA | Lc 91.2 | Preferred for body text |
| #603F3D text on black | 2.27:1 | Fails | Lc -11.2 | 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
#F8F4F4
oklch(97% 0.004 17.2)
-
Step 100
100
#EFE8E7
oklch(93.6% 0.008 27.2)
-
Step 200
200
#E3D5D4
oklch(88.4% 0.016 22.4)
-
Step 300
300
#D2BAB8
oklch(80.9% 0.028 23.4)
-
Step 400
400
#BB9694
oklch(70.7% 0.045 21.9)
-
Step 500
500
#A97D7A
oklch(63.2% 0.055 23.2)
-
Step 600
600
#946562
oklch(55.5% 0.061 23.3)
-
Step 700
700
#7E5451
oklch(49.1% 0.057 23.9)
-
Step 800
800 (this color)
#603F3D
oklch(40.5% 0.047 23.2)
-
Step 900
900
#533A38
oklch(37.6% 0.036 24.1)
-
Step 950
950
#312221
oklch(27% 0.023 23.1)
#603F3D 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) | #46443D | 0.048 |
| Deuteranopia (no green cones) | #4D4A3D | 0.046 |
| Tritanopia (no blue cones) | #673B3F | 0.018 |
| Achromatopsia (no color) | #474747 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #603F3D
#603F3D
oklch(40.5% 0.047 23.2)
- #275154
#275154
oklch(40.6% 0.047 201.6)
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 #603F3D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.020
- Brownish Purple #76424E ΔE 0.052
- Charcoal Grey #3C4142 ΔE 0.063
- Mud Brown #60460F ΔE 0.066
- Chestnut #742802 ΔE 0.075
- Onyx #343A40 ΔE 0.083
- Dark Slate Gray #2F4F4F ΔE 0.084
- Milk Chocolate #7F4E1E ΔE 0.090
Use #603F3D 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.