#A13B05
Closest named color: Russet (#A13905). oklch(49% 0.146 41.6), rgb(161, 59, 5).
Aa
White text reads best on this color (6.68:1).
About this color
#A13B05 is a medium-dark, vivid orange. In OKLCH its lightness is 49%, its chroma 0.146 and its hue 42°. Its hue sits on the warm side of the wheel. The nearest named color is Russet (#A13905), ΔE 0.004 away. White text reads best on it, at 6.68:1.
| Hue family | Oranges |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.146) |
| Temperature | warm |
| Nearest name | Russet (#A13905) |
| Black text | 3.14:1 |
| White text | 6.68:1 |
Values
| HEX | #A13B05 |
| RGB | rgb(161, 59, 5) |
| HSL | hsl(21, 94%, 33%) |
| OKLCH | oklch(49% 0.146 41.6) |
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 #A13B05 | 6.68:1 | AA | Lc -87.1 | Fine for body text |
| Black text on #A13B05 | 3.14:1 | AA large text | Lc 22.0 | Dividers and decoration only |
| #A13B05 text on white | 6.68:1 | AA | Lc 82.1 | Fine for body text |
| #A13B05 text on black | 3.14:1 | AA large text | Lc -19.8 | 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
#F7E6DF
oklch(93.7% 0.021 43.9)
-
Step 200
200
#F1D1C5
oklch(88.4% 0.04 41.7)
-
Step 300
300
#E9B29D
oklch(80.9% 0.071 41.9)
-
Step 400
400
#DC8867
oklch(70.7% 0.113 42.1)
-
Step 500
500
#D0673D
oklch(63.1% 0.144 41.5)
-
Step 600
600
#BB4B17
oklch(55.5% 0.157 41.6)
-
Step 700
700 (this color)
#A13B05
oklch(49% 0.146 41.6)
-
Step 800
800
#83320C
oklch(42.7% 0.121 41.6)
-
Step 900
900
#6A2D14
oklch(37.8% 0.095 41.4)
-
Step 950
950
#3E1B0D
oklch(27% 0.06 41.7)
#A13B05 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) | #594E00 | 0.142 |
| Deuteranopia (no green cones) | #726500 | 0.129 |
| Tritanopia (no blue cones) | #B21E32 | 0.069 |
| Achromatopsia (no color) | #5C5C5C | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A13B05
#A13B05
oklch(49% 0.146 41.6)
- #006B85
#006B85
oklch(48.9% 0.091 222.2)
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 #A13B05, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Russet #A13905 ΔE 0.004
- Burnt Umber #A0450E ΔE 0.020
- Brick #A03623 ΔE 0.024
- Rusty Red #AF2F0D ΔE 0.032
- Rust Red #AA2704 ΔE 0.034
- Burnt Red #9F2305 ΔE 0.041
- Saddle Brown #8B4513 ΔE 0.044
- Warm Brown #964E02 ΔE 0.044
Use #A13B05 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.