#A6641D
Closest named color: Raw Umber (#A75E09). oklch(56.5% 0.117 62.2), rgb(166, 100, 29).
Aa
White text reads best on this color (4.70:1).
About this color
#A6641D is a medium-dark, moderately saturated brown. In OKLCH its lightness is 57%, its chroma 0.117 and its hue 62°. Its hue sits on the warm side of the wheel. The nearest named color is Raw Umber (#A75E09), ΔE 0.014 away. White text reads best on it, at 4.70:1.
| Hue family | Browns |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.117) |
| Temperature | warm |
| Nearest name | Raw Umber (#A75E09) |
| Black text | 4.46:1 |
| White text | 4.70:1 |
Values
| HEX | #A6641D |
| RGB | rgb(166, 100, 29) |
| HSL | hsl(31, 70%, 38%) |
| OKLCH | oklch(56.5% 0.117 62.2) |
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 #A6641D | 4.70:1 | AA | Lc -77.8 | Fine for body text |
| Black text on #A6641D | 4.46:1 | AA large text | Lc 31.7 | Non-text elements, placeholder text |
| #A6641D text on white | 4.70:1 | AA | Lc 72.4 | Content text, not long reading |
| #A6641D text on black | 4.46:1 | AA large text | Lc -29.3 | Dividers and decoration only |
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 600.
-
Step 50
50
#F9F4F1
oklch(97% 0.007 53.4)
-
Step 100
100
#F2E8E0
oklch(93.7% 0.015 61.3)
-
Step 200
200
#E8D5C6
oklch(88.4% 0.029 60.7)
-
Step 300
300
#DABA9E
oklch(80.9% 0.053 63.2)
-
Step 400
400
#C79569
oklch(70.7% 0.084 62.2)
-
Step 500
500
#B87A3E
oklch(63.2% 0.108 62.6)
-
Step 600
600 (this color)
#A6641D
oklch(56.5% 0.117 62.2)
-
Step 700
700
#8C5008
oklch(49.1% 0.11 61.9)
-
Step 800
800
#71420E
oklch(42.7% 0.09 62.5)
-
Step 900
900
#5C3815
oklch(37.7% 0.071 61.7)
-
Step 950
950
#36210E
oklch(27% 0.044 61.2)
#A6641D 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) | #796A10 | 0.082 |
| Deuteranopia (no green cones) | #887A1E | 0.075 |
| Tritanopia (no blue cones) | #B65556 | 0.086 |
| Achromatopsia (no color) | #747474 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A6641D
#A6641D
oklch(56.5% 0.117 62.2)
- #277DB5
#277DB5
oklch(56.6% 0.118 242.2)
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 #A6641D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Raw Umber #A75E09 ΔE 0.014
- Orangey Brown #B16002 ΔE 0.021
- Umber #B26400 ΔE 0.023
- Raw Sienna #9A6200 ΔE 0.027
- Earth #A2653E ΔE 0.029
- Copper #B66325 ΔE 0.031
- Sepia #985E2B ΔE 0.034
- Caramel #AF6F09 ΔE 0.036
Use #A6641D 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.