#633600
Closest named color: Mud Brown (#60460F). oklch(38.1% 0.088 62), rgb(99, 54, 0).
Aa
White text reads best on this color (10.20:1).
About this color
#633600 is a dark, moderately saturated brown. In OKLCH its lightness is 38%, its chroma 0.088 and its hue 62°. 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 10.20:1.
| Hue family | Browns |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.088) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.05:1 |
| White text | 10.20:1 |
Values
| HEX | #633600 |
| RGB | rgb(99, 54, 0) |
| HSL | hsl(33, 100%, 19%) |
| OKLCH | oklch(38.1% 0.088 62) |
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 #633600 | 10.20:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #633600 | 2.05:1 | Fails | Lc 10.6 | Not readable |
| #633600 text on white | 10.20:1 | AAA | Lc 93.3 | Preferred for body text |
| #633600 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
#F4E7DD
oklch(93.6% 0.02 60.2)
-
Step 200
200
#EBD4C1
oklch(88.4% 0.036 61.9)
-
Step 300
300
#E0B895
oklch(80.9% 0.066 62.9)
-
Step 400
400
#D09158
oklch(70.7% 0.106 61.9)
-
Step 500
500
#C2741E
oklch(63.1% 0.135 62.1)
-
Step 600
600
#A75F00
oklch(55.6% 0.128 62.1)
-
Step 700
700
#8D4F00
oklch(49.1% 0.113 61.8)
-
Step 800
800
#744000
oklch(42.6% 0.098 61.8)
-
Step 900
900 (this color)
#633600
oklch(38.1% 0.088 62)
-
Step 950
950
#391F05
oklch(26.9% 0.055 61.7)
#633600 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 | 0.062 |
| Deuteranopia (no green cones) | #4F4500 | 0.056 |
| Tritanopia (no blue cones) | #6D2B2D | 0.064 |
| Achromatopsia (no color) | #414141 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #633600
#633600
oklch(38.1% 0.088 62)
- #05476D
#05476D
oklch(38.1% 0.088 242.1)
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 #633600, 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 0.070
- Green Brown #544E03 ΔE 0.072
- Reddy Brown #6E1005 ΔE 0.078
- Rust Brown #8B3103 ΔE 0.082
- Dark Olive #373E02 ΔE 0.085
- Olive Brown #645403 ΔE 0.085
Use #633600 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.