#603729
Closest named color: Purple Brown (#673A3F). oklch(38.4% 0.063 39.6), rgb(96, 55, 41).
Aa
White text reads best on this color (10.11:1).
About this color
#603729 is a dark, muted red. In OKLCH its lightness is 38%, its chroma 0.063 and its hue 40°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.036 away. White text reads best on it, at 10.11:1.
| Hue family | Reds |
| Lightness | dark (38%) |
| Chroma | muted (0.063) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.07:1 |
| White text | 10.11:1 |
Values
| HEX | #603729 |
| RGB | rgb(96, 55, 41) |
| HSL | hsl(15, 40%, 27%) |
| OKLCH | oklch(38.4% 0.063 39.6) |
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 #603729 | 10.11:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #603729 | 2.07:1 | Fails | Lc 10.7 | Not readable |
| #603729 text on white | 10.11:1 | AAA | Lc 93.3 | Preferred for body text |
| #603729 text on black | 2.07:1 | Fails | Lc -9.2 | 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 900.
-
Step 50
50
#F9F4F2
oklch(97% 0.006 43.3)
-
Step 100
100
#F3E7E3
oklch(93.6% 0.014 39.4)
-
Step 200
200
#EAD4CC
oklch(88.6% 0.027 41.1)
-
Step 300
300
#DDB7AA
oklch(80.9% 0.048 39.8)
-
Step 400
400
#CA917D
oklch(70.7% 0.075 40.2)
-
Step 500
500
#BC745C
oklch(63.1% 0.098 39.2)
-
Step 600
600
#A75C42
oklch(55.6% 0.106 39.7)
-
Step 700
700
#8F4B34
oklch(49.1% 0.098 39.3)
-
Step 800
800
#743E2B
oklch(42.7% 0.081 39.9)
-
Step 900
900 (this color)
#603729
oklch(38.4% 0.063 39.6)
-
Step 950
950
#371F17
oklch(26.9% 0.04 39.2)
#603729 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) | #413C28 | 0.060 |
| Deuteranopia (no green cones) | #4B4529 | 0.055 |
| Tritanopia (no blue cones) | #693033 | 0.032 |
| Achromatopsia (no color) | #424242 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #603729
#603729
oklch(38.4% 0.063 39.6)
- #0F4B5A
#0F4B5A
oklch(38.4% 0.063 219)
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 #603729, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.036
- Chestnut #742802 ΔE 0.052
- Mud Brown #60460F ΔE 0.059
- Charcoal Grey #3C4142 ΔE 0.071
- Brownish Purple #76424E ΔE 0.074
- Reddy Brown #6E1005 ΔE 0.076
- Onyx #343A40 ΔE 0.085
- Red Brown #8B2E16 ΔE 0.086
Use #603729 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.