#A33506
Closest named color: Russet (#A13905). oklch(48.6% 0.153 38.6), rgb(163, 53, 6).
Aa
White text reads best on this color (6.84:1).
About this color
#A33506 is a medium-dark, vivid red. In OKLCH its lightness is 49%, its chroma 0.153 and its hue 39°. Its hue sits on the warm side of the wheel. The nearest named color is Russet (#A13905), ΔE 0.008 away. White text reads best on it, at 6.84:1.
| Hue family | Reds |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.153) |
| Temperature | warm |
| Nearest name | Russet (#A13905) |
| Black text | 3.06:1 |
| White text | 6.84:1 |
Values
| HEX | #A33506 |
| RGB | rgb(163, 53, 6) |
| HSL | hsl(18, 93%, 33%) |
| OKLCH | oklch(48.6% 0.153 38.6) |
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 #A33506 | 6.84:1 | AA | Lc -87.6 | Fine for body text |
| Black text on #A33506 | 3.06:1 | AA large text | Lc 21.5 | Dividers and decoration only |
| #A33506 text on white | 6.84:1 | AA | Lc 82.6 | Fine for body text |
| #A33506 text on black | 3.06:1 | AA large text | Lc -19.4 | 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
#FCF3F1
oklch(97.1% 0.01 32.5)
-
Step 100
100
#F8E5E0
oklch(93.6% 0.022 35.1)
-
Step 200
200
#F3D1C6
oklch(88.6% 0.041 38.7)
-
Step 300
300
#ECB19E
oklch(81% 0.074 38.6)
-
Step 400
400
#DF8568
oklch(70.6% 0.119 38.6)
-
Step 500
500
#D4633E
oklch(63.1% 0.152 38.5)
-
Step 600
600
#BF4619
oklch(55.5% 0.165 38.6)
-
Step 700
700 (this color)
#A33506
oklch(48.6% 0.153 38.6)
-
Step 800
800
#862E0E
oklch(42.7% 0.128 38.3)
-
Step 900
900
#6C2B15
oklch(37.8% 0.099 38.6)
-
Step 950
950
#3F1A0D
oklch(27% 0.062 39.6)
#A33506 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) | #564B00 | 0.154 |
| Deuteranopia (no green cones) | #716400 | 0.139 |
| Tritanopia (no blue cones) | #B40F2E | 0.066 |
| Achromatopsia (no color) | #5B5B5B | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A33506
#A33506
oklch(48.6% 0.153 38.6)
- #006B81
#006B81
oklch(48.7% 0.088 218.5)
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 #A33506, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Russet #A13905 ΔE 0.008
- Brick #A03623 ΔE 0.019
- Rust Red #AA2704 ΔE 0.023
- Rusty Red #AF2F0D ΔE 0.025
- Burnt Umber #A0450E ΔE 0.030
- Burnt Red #9F2305 ΔE 0.032
- Rufous #AE2012 ΔE 0.035
- Brown #A52A2A ΔE 0.037
Use #A33506 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.