#A3451E
Closest named color: Burnt Umber (#A0450E). oklch(50.9% 0.135 41.1), rgb(163, 69, 30).
Aa
White text reads best on this color (6.12:1).
About this color
#A3451E is a medium-dark, moderately saturated brown. In OKLCH its lightness is 51%, its chroma 0.135 and its hue 41°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Umber (#A0450E), ΔE 0.012 away. White text reads best on it, at 6.12:1.
| Hue family | Browns |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.135) |
| Temperature | warm |
| Nearest name | Burnt Umber (#A0450E) |
| Black text | 3.42:1 |
| White text | 6.12:1 |
Values
| HEX | #A3451E |
| RGB | rgb(163, 69, 30) |
| HSL | hsl(18, 69%, 38%) |
| OKLCH | oklch(50.9% 0.135 41.1) |
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 #A3451E | 6.12:1 | AA | Lc -85.1 | Fine for body text |
| Black text on #A3451E | 3.42:1 | AA large text | Lc 24.2 | Dividers and decoration only |
| #A3451E text on white | 6.12:1 | AA | Lc 79.9 | Fine for body text |
| #A3451E text on black | 3.42:1 | AA large text | Lc -21.9 | 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 700.
-
Step 50
50
#FBF4F1
oklch(97.2% 0.009 44.9)
-
Step 100
100
#F6E6E0
oklch(93.6% 0.019 41.8)
-
Step 200
200
#EFD2C7
oklch(88.5% 0.036 41.9)
-
Step 300
300
#E6B3A1
oklch(80.8% 0.065 40.3)
-
Step 400
400
#D88A6D
oklch(70.7% 0.104 41.1)
-
Step 500
500
#CB6A45
oklch(63% 0.133 41.1)
-
Step 600
600
#B75025
oklch(55.7% 0.145 41.3)
-
Step 700
700 (this color)
#A3451E
oklch(50.9% 0.135 41.1)
-
Step 800
800
#803517
oklch(42.8% 0.112 40.7)
-
Step 900
900
#672F19
oklch(37.7% 0.087 41.2)
-
Step 950
950
#3D1C10
oklch(27.1% 0.056 40.4)
#A3451E 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) | #605518 | 0.130 |
| Deuteranopia (no green cones) | #766A1B | 0.120 |
| Tritanopia (no blue cones) | #B32F3D | 0.065 |
| Achromatopsia (no color) | #626262 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A3451E
#A3451E
oklch(50.9% 0.135 41.1)
- #00718B
#00718B
oklch(50.8% 0.093 221.1)
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 #A3451E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Umber #A0450E ΔE 0.012
- Russet #A13905 ΔE 0.025
- Sienna #A0522D ΔE 0.027
- Brick #A03623 ΔE 0.034
- Cinnamon #AC4F06 ΔE 0.035
- Warm Brown #964E02 ΔE 0.038
- Rusty Red #AF2F0D ΔE 0.040
- Sinopia #BB3E03 ΔE 0.046
Use #A3451E 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.