#A0403F
Closest named color: Brick (#A03623). oklch(50.2% 0.128 23.5), rgb(160, 64, 63).
Aa
White text reads best on this color (6.36:1).
About this color
#A0403F is a medium-dark, moderately saturated red. In OKLCH its lightness is 50%, its chroma 0.128 and its hue 23°. Its hue sits on the warm side of the wheel. The nearest named color is Brick (#A03623), ΔE 0.032 away. White text reads best on it, at 6.36:1.
| Hue family | Reds |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.128) |
| Temperature | warm |
| Nearest name | Brick (#A03623) |
| Black text | 3.29:1 |
| White text | 6.36:1 |
Values
| HEX | #A0403F |
| RGB | rgb(160, 64, 63) |
| HSL | hsl(1, 43%, 44%) |
| OKLCH | oklch(50.2% 0.128 23.5) |
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 #A0403F | 6.36:1 | AA | Lc -86.1 | Fine for body text |
| Black text on #A0403F | 3.29:1 | AA large text | Lc 23.1 | Dividers and decoration only |
| #A0403F text on white | 6.36:1 | AA | Lc 81.0 | Fine for body text |
| #A0403F text on black | 3.29:1 | AA large text | Lc -20.9 | 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
#FBF3F3
oklch(97% 0.009 17.3)
-
Step 100
100
#F6E5E4
oklch(93.5% 0.019 21.6)
-
Step 200
200
#EFD1CE
oklch(88.5% 0.034 24.6)
-
Step 300
300
#E6B2AE
oklch(81% 0.061 23.6)
-
Step 400
400
#D88783
oklch(70.7% 0.1 23)
-
Step 500
500
#CB6764
oklch(63.1% 0.128 23.1)
-
Step 600
600
#B64C4B
oklch(55.5% 0.138 23.2)
-
Step 700
700 (this color)
#A0403F
oklch(50.2% 0.128 23.5)
-
Step 800
800
#7F3332
oklch(42.7% 0.106 23.4)
-
Step 900
900
#672D2C
oklch(37.7% 0.084 22.9)
-
Step 950
950
#3C1B1A
oklch(26.9% 0.052 22.9)
#A0403F 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) | #58533E | 0.137 |
| Deuteranopia (no green cones) | #70673D | 0.127 |
| Tritanopia (no blue cones) | #AF2E41 | 0.040 |
| Achromatopsia (no color) | #5F5F5F | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A0403F
#A0403F
oklch(50.2% 0.128 23.5)
- #00727A
#00727A
oklch(50.3% 0.086 203.3)
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 #A0403F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick #A03623 ΔE 0.032
- Light Maroon #A24857 ΔE 0.033
- Brown #A52A2A ΔE 0.038
- Light Burgundy #A8415B ΔE 0.043
- Russet #A13905 ΔE 0.048
- Rusty Red #AF2F0D ΔE 0.050
- Burnt Umber #A0450E ΔE 0.051
- Firebrick #B22222 ΔE 0.052
Use #A0403F 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.