#AB451F
Closest named color: Burnt Umber (#A0450E). oklch(52.2% 0.143 39.4), rgb(171, 69, 31).
Aa
White text reads best on this color (5.82:1).
About this color
#AB451F is a medium-dark, vivid red. In OKLCH its lightness is 52%, its chroma 0.143 and its hue 39°. Its hue sits on the warm side of the wheel. The nearest named color is Burnt Umber (#A0450E), ΔE 0.025 away. White text reads best on it, at 5.82:1.
| Hue family | Reds |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.143) |
| Temperature | warm |
| Nearest name | Burnt Umber (#A0450E) |
| Black text | 3.60:1 |
| White text | 5.82:1 |
Values
| HEX | #AB451F |
| RGB | rgb(171, 69, 31) |
| HSL | hsl(16, 69%, 40%) |
| OKLCH | oklch(52.2% 0.143 39.4) |
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 #AB451F | 5.82:1 | AA | Lc -83.7 | Fine for body text |
| Black text on #AB451F | 3.60:1 | AA large text | Lc 25.7 | Dividers and decoration only |
| #AB451F text on white | 5.82:1 | AA | Lc 78.4 | Fine for body text |
| #AB451F text on black | 3.60:1 | AA large text | Lc -23.4 | 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
#FBF3F1
oklch(97% 0.009 34.3)
-
Step 100
100
#F7E6E0
oklch(93.7% 0.02 40.5)
-
Step 200
200
#F1D1C7
oklch(88.5% 0.039 38.1)
-
Step 300
300
#E9B2A0
oklch(80.9% 0.069 38.9)
-
Step 400
400
#DB886B
oklch(70.7% 0.11 40)
-
Step 500
500
#CF6743
oklch(63% 0.141 39.4)
-
Step 600
600
#BB4B21
oklch(55.6% 0.155 39.4)
-
Step 700
700 (this color)
#AB451F
oklch(52.2% 0.143 39.4)
-
Step 800
800
#823214
oklch(42.6% 0.118 39.4)
-
Step 900
900
#692D18
oklch(37.7% 0.092 39.3)
-
Step 950
950
#3E1B0F
oklch(27% 0.059 39.4)
#AB451F 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) | #625719 | 0.141 |
| Deuteranopia (no green cones) | #7B6E1B | 0.129 |
| Tritanopia (no blue cones) | #BC2C3D | 0.065 |
| Achromatopsia (no color) | #656565 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AB451F
#AB451F
oklch(52.2% 0.143 39.4)
- #00768F
#00768F
oklch(52.3% 0.095 219.4)
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 #AB451F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burnt Umber #A0450E ΔE 0.025
- Cinnamon #AC4F06 ΔE 0.029
- Sienna #A0522D ΔE 0.031
- Sinopia #BB3E03 ΔE 0.031
- Russet #A13905 ΔE 0.035
- Rusty Red #AF2F0D ΔE 0.036
- Brick #A03623 ΔE 0.042
- Burnt Siena #B75203 ΔE 0.043
Use #AB451F 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.