#A63118
Closest named color: Brick (#A03623). oklch(48.8% 0.157 33.6), rgb(166, 49, 24).
Aa
White text reads best on this color (6.83:1).
About this color
#A63118 is a medium-dark, vivid red. In OKLCH its lightness is 49%, its chroma 0.157 and its hue 34°. Its hue sits on the warm side of the wheel. The nearest named color is Brick (#A03623), ΔE 0.014 away. White text reads best on it, at 6.83:1.
| Hue family | Reds |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.157) |
| Temperature | warm |
| Nearest name | Brick (#A03623) |
| Black text | 3.07:1 |
| White text | 6.83:1 |
Values
| HEX | #A63118 |
| RGB | rgb(166, 49, 24) |
| HSL | hsl(11, 75%, 37%) |
| OKLCH | oklch(48.8% 0.157 33.6) |
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 #A63118 | 6.83:1 | AA | Lc -87.5 | Fine for body text |
| Black text on #A63118 | 3.07:1 | AA large text | Lc 21.6 | Dividers and decoration only |
| #A63118 text on white | 6.83:1 | AA | Lc 82.4 | Fine for body text |
| #A63118 text on black | 3.07:1 | AA large text | Lc -19.5 | 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
#F4D0C7
oklch(88.6% 0.043 34.3)
-
Step 300
300
#EDAFA1
oklch(80.8% 0.076 33.1)
-
Step 400
400
#E2836E
oklch(70.8% 0.122 33.4)
-
Step 500
500
#D76046
oklch(63.2% 0.156 33.8)
-
Step 600
600
#C24227
oklch(55.6% 0.169 33.6)
-
Step 700
700 (this color)
#A63118
oklch(48.8% 0.157 33.6)
-
Step 800
800
#882B18
oklch(42.7% 0.131 33.4)
-
Step 900
900
#6D281A
oklch(37.6% 0.102 33.2)
-
Step 950
950
#401910
oklch(27% 0.063 34.3)
#A63118 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) | #544A13 | 0.164 |
| Deuteranopia (no green cones) | #716411 | 0.148 |
| Tritanopia (no blue cones) | #B7002D | 0.058 |
| Achromatopsia (no color) | #5B5B5B | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A63118
#A63118
oklch(48.8% 0.157 33.6)
- #006C7D
#006C7D
oklch(48.8% 0.086 213.4)
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 #A63118, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick #A03623 ΔE 0.014
- Rust Red #AA2704 ΔE 0.015
- Rusty Red #AF2F0D ΔE 0.018
- Russet #A13905 ΔE 0.021
- Brown #A52A2A ΔE 0.023
- Rufous #AE2012 ΔE 0.024
- Burnt Red #9F2305 ΔE 0.028
- Firebrick #B22222 ΔE 0.031
Use #A63118 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.