#40030A
Closest named color: Dark Maroon (#3C0008). oklch(23.9% 0.091 21.4), rgb(64, 3, 10).
Aa
White text reads best on this color (16.99:1).
About this color
#40030A is a very dark, moderately saturated red. In OKLCH its lightness is 24%, its chroma 0.091 and its hue 21°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Maroon (#3C0008), ΔE 0.014 away. White text reads best on it, at 16.99:1.
| Hue family | Reds |
| Lightness | very dark (24%) |
| Chroma | moderately saturated (0.091) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.23:1 |
| White text | 16.99:1 |
Values
| HEX | #40030A |
| RGB | rgb(64, 3, 10) |
| HSL | hsl(353, 91%, 13%) |
| OKLCH | oklch(23.9% 0.091 21.4) |
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 #40030A | 16.99:1 | AAA | Lc -105.5 | Preferred for body text |
| Black text on #40030A | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #40030A text on white | 16.99:1 | AAA | Lc 102.9 | Preferred for body text |
| #40030A text on black | 1.23:1 | Fails | Lc 0.0 | Not readable |
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 950.
-
Step 50
50
#FFF2F1
oklch(97.1% 0.014 22.8)
-
Step 100
100
#FEE2E1
oklch(93.5% 0.031 20.2)
-
Step 200
200
#FECAC8
oklch(88.4% 0.059 20.9)
-
Step 300
300
#FEA5A2
oklch(80.9% 0.106 21.8)
-
Step 400
400
#F96D70
oklch(70.6% 0.172 21.3)
-
Step 500
500
#F1384A
oklch(63.1% 0.219 21.5)
-
Step 600
600
#D70032
oklch(55.5% 0.224 21.5)
-
Step 700
700
#B60029
oklch(49% 0.197 21.4)
-
Step 800
800
#970020
oklch(42.7% 0.172 21.5)
-
Step 900
900
#7C0C1D
oklch(37.7% 0.143 21.2)
-
Step 950
950 (this color)
#40030A
oklch(23.9% 0.091 21.4)
#40030A 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) | #16140A | 0.101 |
| Deuteranopia (no green cones) | #252108 | 0.092 |
| Tritanopia (no blue cones) | #470006 | 0.017 |
| Achromatopsia (no color) | #1C1C1C | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40030A
#40030A
oklch(23.9% 0.091 21.4)
- #002427
#002427
oklch(23.7% 0.04 203)
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 #40030A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Maroon #3C0008 ΔE 0.014
- Deep Brown #410200 ΔE 0.015
- Mahogany #4A0100 ΔE 0.028
- Chocolate Brown #411900 ΔE 0.053
- Dark Plum #3F012C ΔE 0.063
- Dark Brown #341C02 ΔE 0.065
- Aubergine #3D0734 ΔE 0.075
- Eggplant #380835 ΔE 0.080
Use #40030A 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.