#A55A3F
Closest named color: Sienna (#A0522D). oklch(55% 0.106 40.3), rgb(165, 90, 63).
Aa
White text reads best on this color (5.07:1).
About this color
#A55A3F is a medium-dark, moderately saturated brown. In OKLCH its lightness is 55%, its chroma 0.106 and its hue 40°. Its hue sits on the warm side of the wheel. The nearest named color is Sienna (#A0522D), ΔE 0.026 away. White text reads best on it, at 5.07:1.
| Hue family | Browns |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.106) |
| Temperature | warm |
| Nearest name | Sienna (#A0522D) |
| Black text | 4.13:1 |
| White text | 5.07:1 |
Values
| HEX | #A55A3F |
| RGB | rgb(165, 90, 63) |
| HSL | hsl(16, 45%, 45%) |
| OKLCH | oklch(55% 0.106 40.3) |
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 #A55A3F | 5.07:1 | AA | Lc -80.1 | Fine for body text |
| Black text on #A55A3F | 4.13:1 | AA large text | Lc 29.3 | Dividers and decoration only |
| #A55A3F text on white | 5.07:1 | AA | Lc 74.7 | Content text, not long reading |
| #A55A3F text on black | 4.13:1 | AA large text | Lc -27.0 | 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 600.
-
Step 50
50
#F9F4F2
oklch(97% 0.006 43.3)
-
Step 100
100
#F3E7E3
oklch(93.6% 0.014 39.4)
-
Step 200
200
#EAD4CC
oklch(88.6% 0.027 41.1)
-
Step 300
300
#DDB7AA
oklch(80.9% 0.048 39.8)
-
Step 400
400
#CB917C
oklch(70.8% 0.077 40.7)
-
Step 500
500
#BC745B
oklch(63.1% 0.098 39.9)
-
Step 600
600 (this color)
#A55A3F
oklch(55% 0.106 40.3)
-
Step 700
700
#8F4B33
oklch(49.1% 0.099 39.9)
-
Step 800
800
#743E2B
oklch(42.7% 0.081 39.9)
-
Step 900
900
#5E3527
oklch(37.6% 0.064 39.5)
-
Step 950
950
#371F17
oklch(26.9% 0.04 39.2)
#A55A3F 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) | #6E643C | 0.099 |
| Deuteranopia (no green cones) | #80753E | 0.093 |
| Tritanopia (no blue cones) | #B44C53 | 0.054 |
| Achromatopsia (no color) | #6E6E6E | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A55A3F
#A55A3F
oklch(55% 0.106 40.3)
- #007E9A
#007E9A
oklch(54.9% 0.1 220.6)
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 #A55A3F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sienna #A0522D ΔE 0.026
- Earth #A2653E ΔE 0.028
- Sepia #985E2B ΔE 0.037
- Cinnamon #AC4F06 ΔE 0.042
- Raw Umber #A75E09 ΔE 0.046
- Burnt Siena #B75203 ΔE 0.048
- Copper #B66325 ΔE 0.050
- Orangey Brown #B16002 ΔE 0.053
Use #A55A3F 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.