#AC420F
Closest named color: Burnt Umber (#A0450E). oklch(51.8% 0.15 41.4), rgb(172, 66, 15).
Aa
White text reads best on this color (5.93:1).
About this color
#AC420F is a medium-dark, vivid orange. In OKLCH its lightness is 52%, its chroma 0.150 and its hue 41°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Umber (#A0450E), ΔE 0.024 away. White text reads best on it, at 5.93:1.
| Hue family | Oranges |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.150) |
| Temperature | warm |
| Nearest name | Burnt Umber (#A0450E) |
| Black text | 3.54:1 |
| White text | 5.93:1 |
Values
| HEX | #AC420F |
| RGB | rgb(172, 66, 15) |
| HSL | hsl(19, 84%, 37%) |
| OKLCH | oklch(51.8% 0.15 41.4) |
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 #AC420F | 5.93:1 | AA | Lc -84.0 | Fine for body text |
| Black text on #AC420F | 3.54:1 | AA large text | Lc 25.3 | Dividers and decoration only |
| #AC420F text on white | 5.93:1 | AA | Lc 78.8 | Fine for body text |
| #AC420F text on black | 3.54:1 | AA large text | Lc -23.0 | 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
#FCF3F0
oklch(97% 0.011 39.4)
-
Step 100
100
#F7E6DF
oklch(93.7% 0.021 43.9)
-
Step 200
200
#F2D1C5
oklch(88.5% 0.041 41)
-
Step 300
300
#EAB29C
oklch(80.9% 0.072 42.4)
-
Step 400
400
#DD8766
oklch(70.7% 0.116 41.6)
-
Step 500
500
#D2663A
oklch(63.2% 0.148 41.7)
-
Step 600
600
#BD4911
oklch(55.5% 0.161 41.4)
-
Step 700
700 (this color)
#AC420F
oklch(51.8% 0.15 41.4)
-
Step 800
800
#843108
oklch(42.7% 0.124 41.7)
-
Step 900
900
#6B2C12
oklch(37.8% 0.098 41.2)
-
Step 950
950
#3F1B0C
oklch(27.1% 0.061 42.2)
#AC420F 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) | #615503 | 0.146 |
| Deuteranopia (no green cones) | #7B6D07 | 0.133 |
| Tritanopia (no blue cones) | #BE2639 | 0.071 |
| Achromatopsia (no color) | #646464 | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AC420F
#AC420F
oklch(51.8% 0.15 41.4)
- #00748F
#00748F
oklch(51.8% 0.095 221.5)
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 #AC420F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Umber #A0450E ΔE 0.024
- Cinnamon #AC4F06 ΔE 0.029
- Sinopia #BB3E03 ΔE 0.029
- Russet #A13905 ΔE 0.031
- Rusty Red #AF2F0D ΔE 0.032
- Sienna #A0522D ΔE 0.037
- Brick #A03623 ΔE 0.042
- Burnt Siena #B75203 ΔE 0.044
Use #AC420F 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.