#633907
Closest named color: Mud Brown (#60460F). oklch(38.8% 0.084 63.4), rgb(99, 57, 7).
Aa
White text reads best on this color (9.91:1).
About this color
#633907 is a dark, moderately saturated brown. In OKLCH its lightness is 39%, its chroma 0.084 and its hue 63°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.036 away. White text reads best on it, at 9.91:1.
| Hue family | Browns |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.084) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.11:1 |
| White text | 9.91:1 |
Values
| HEX | #633907 |
| RGB | rgb(99, 57, 7) |
| HSL | hsl(33, 87%, 21%) |
| OKLCH | oklch(38.8% 0.084 63.4) |
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 #633907 | 9.91:1 | AAA | Lc -96.9 | Preferred for body text |
| Black text on #633907 | 2.11:1 | Fails | Lc 11.3 | Not readable |
| #633907 text on white | 9.91:1 | AAA | Lc 92.7 | Preferred for body text |
| #633907 text on black | 2.11:1 | Fails | Lc -9.8 | 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
#F3E8DE
oklch(93.7% 0.018 64.9)
-
Step 200
200
#EAD5C2
oklch(88.5% 0.035 64.5)
-
Step 300
300
#DEB997
oklch(81% 0.063 64.3)
-
Step 400
400
#CD935C
oklch(70.8% 0.1 63.5)
-
Step 500
500
#BF7626
oklch(63.1% 0.128 63.2)
-
Step 600
600
#A66000
oklch(55.7% 0.127 63.3)
-
Step 700
700
#8C5000
oklch(49.1% 0.112 63.2)
-
Step 800
800
#734100
oklch(42.7% 0.097 63.4)
-
Step 900
900 (this color)
#633907
oklch(38.8% 0.084 63.4)
-
Step 950
950
#382006
oklch(27% 0.053 64.2)
#633907 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) | #463D00 | 0.058 |
| Deuteranopia (no green cones) | #504708 | 0.052 |
| Tritanopia (no blue cones) | #6D2F30 | 0.062 |
| Achromatopsia (no color) | #434343 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #633907
#633907
oklch(38.8% 0.084 63.4)
- #12486D
#12486D
oklch(38.7% 0.083 243.7)
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 #633907, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.036
- Chestnut #742802 ΔE 0.049
- Green Brown #544E03 ΔE 0.066
- Purple Brown #673A3F ΔE 0.067
- Olive Brown #645403 ΔE 0.078
- Rust Brown #8B3103 ΔE 0.081
- Milk Chocolate #7F4E1E ΔE 0.083
- Reddy Brown #6E1005 ΔE 0.084
Use #633907 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.