#633604
Closest named color: Mud Brown (#60460F). oklch(38.2% 0.086 60.7), rgb(99, 54, 4).
Aa
White text reads best on this color (10.19:1).
About this color
#633604 is a dark, moderately saturated brown. In OKLCH its lightness is 38%, its chroma 0.086 and its hue 61°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.043 away. White text reads best on it, at 10.19:1.
| Hue family | Browns |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.086) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.05:1 |
| White text | 10.19:1 |
Values
| HEX | #633604 |
| RGB | rgb(99, 54, 4) |
| HSL | hsl(32, 92%, 20%) |
| OKLCH | oklch(38.2% 0.086 60.7) |
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 #633604 | 10.19:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #633604 | 2.05:1 | Fails | Lc 10.6 | Not readable |
| #633604 text on white | 10.19:1 | AAA | Lc 93.3 | Preferred for body text |
| #633604 text on black | 2.05:1 | 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
#FAF4F0
oklch(97.1% 0.008 56.3)
-
Step 100
100
#F4E7DE
oklch(93.6% 0.019 57.2)
-
Step 200
200
#EBD4C2
oklch(88.4% 0.035 60.4)
-
Step 300
300
#E0B897
oklch(81% 0.064 61.2)
-
Step 400
400
#D0915B
oklch(70.7% 0.104 60.5)
-
Step 500
500
#C27425
oklch(63.1% 0.132 60.7)
-
Step 600
600
#A85E00
oklch(55.6% 0.129 60.9)
-
Step 700
700
#8E4E00
oklch(49% 0.114 60.5)
-
Step 800
800
#754000
oklch(42.8% 0.099 61.2)
-
Step 900
900 (this color)
#633604
oklch(38.2% 0.086 60.7)
-
Step 950
950
#391F06
oklch(26.9% 0.055 60.7)
#633604 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) | #443B00 | 0.063 |
| Deuteranopia (no green cones) | #4F4504 | 0.056 |
| Tritanopia (no blue cones) | #6D2C2D | 0.061 |
| Achromatopsia (no color) | #414141 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #633604
#633604
oklch(38.2% 0.086 60.7)
- #04476C
#04476C
oklch(38.1% 0.087 241.2)
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 #633604, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.043
- Chestnut #742802 ΔE 0.045
- Purple Brown #673A3F ΔE 0.068
- Green Brown #544E03 ΔE 0.073
- Reddy Brown #6E1005 ΔE 0.077
- Rust Brown #8B3103 ΔE 0.082
- Red Brown #8B2E16 ΔE 0.085
- Dark Olive #373E02 ΔE 0.085
Use #633604 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.