#AA451D
Closest named color: Burnt Umber (#A0450E). oklch(52% 0.143 40.2), rgb(170, 69, 29).
Aa
White text reads best on this color (5.86:1).
About this color
#AA451D is a medium-dark, vivid orange. In OKLCH its lightness is 52%, its chroma 0.143 and its hue 40°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Umber (#A0450E), ΔE 0.023 away. White text reads best on it, at 5.86:1.
| Hue family | Oranges |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.143) |
| Temperature | warm |
| Nearest name | Burnt Umber (#A0450E) |
| Black text | 3.57:1 |
| White text | 5.86:1 |
Values
| HEX | #AA451D |
| RGB | rgb(170, 69, 29) |
| HSL | hsl(17, 71%, 39%) |
| OKLCH | oklch(52% 0.143 40.2) |
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 #AA451D | 5.86:1 | AA | Lc -83.9 | Fine for body text |
| Black text on #AA451D | 3.57:1 | AA large text | Lc 25.5 | Dividers and decoration only |
| #AA451D text on white | 5.86:1 | AA | Lc 78.6 | Fine for body text |
| #AA451D text on black | 3.57:1 | AA large text | Lc -23.2 | 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
#F1D1C6
oklch(88.5% 0.039 39.9)
-
Step 300
300
#E9B29F
oklch(80.9% 0.07 39.9)
-
Step 400
400
#DB886B
oklch(70.7% 0.11 40)
-
Step 500
500
#CF6842
oklch(63.2% 0.141 40.4)
-
Step 600
600
#BA4C20
oklch(55.6% 0.153 40.2)
-
Step 700
700 (this color)
#AA451D
oklch(52% 0.143 40.2)
-
Step 800
800
#823313
oklch(42.7% 0.117 40.4)
-
Step 900
900
#692D17
oklch(37.7% 0.093 39.9)
-
Step 950
950
#3E1B0F
oklch(27% 0.059 39.4)
#AA451D 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) | #625617 | 0.139 |
| Deuteranopia (no green cones) | #7A6D19 | 0.127 |
| Tritanopia (no blue cones) | #BB2C3D | 0.067 |
| Achromatopsia (no color) | #656565 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AA451D
#AA451D
oklch(52% 0.143 40.2)
- #00758F
#00758F
oklch(52% 0.095 220.4)
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 #AA451D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Umber #A0450E ΔE 0.023
- Cinnamon #AC4F06 ΔE 0.028
- Sienna #A0522D ΔE 0.030
- Russet #A13905 ΔE 0.033
- Sinopia #BB3E03 ΔE 0.033
- Rusty Red #AF2F0D ΔE 0.036
- Brick #A03623 ΔE 0.041
- Burnt Siena #B75203 ΔE 0.044
Use #AA451D 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.