#42000F
Closest named color: Dark Maroon (#3C0008). oklch(24.1% 0.096 15.9), rgb(66, 0, 15).
Aa
White text reads best on this color (16.95:1).
About this color
#42000F is a very dark, moderately saturated red. In OKLCH its lightness is 24%, its chroma 0.096 and its hue 16°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Maroon (#3C0008), ΔE 0.018 away. White text reads best on it, at 16.95:1.
| Hue family | Reds |
| Lightness | very dark (24%) |
| Chroma | moderately saturated (0.096) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.23:1 |
| White text | 16.95:1 |
Values
| HEX | #42000F |
| RGB | rgb(66, 0, 15) |
| HSL | hsl(346, 100%, 13%) |
| OKLCH | oklch(24.1% 0.096 15.9) |
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 #42000F | 16.95:1 | AAA | Lc -105.3 | Preferred for body text |
| Black text on #42000F | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #42000F text on white | 16.95:1 | AAA | Lc 102.7 | Preferred for body text |
| #42000F 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
#FFF2F2
oklch(97.1% 0.014 17.4)
-
Step 100
100
#FFE2E2
oklch(93.6% 0.032 17.7)
-
Step 200
200
#FFCACC
oklch(88.6% 0.06 15.8)
-
Step 300
300
#FFA3A9
oklch(80.9% 0.109 15.5)
-
Step 400
400
#FD6779
oklch(70.6% 0.183 15.9)
-
Step 500
500
#F62857
oklch(63.1% 0.234 16)
-
Step 600
600
#D60045
oklch(55.6% 0.223 15.8)
-
Step 700
700
#B50039
oklch(49.1% 0.196 15.7)
-
Step 800
800
#96002D
oklch(42.7% 0.171 16.1)
-
Step 900
900
#7E0025
oklch(37.7% 0.151 15.7)
-
Step 950
950 (this color)
#42000F
oklch(24.1% 0.096 15.9)
#42000F 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) | #15130F | 0.108 |
| Deuteranopia (no green cones) | #25210D | 0.098 |
| Tritanopia (no blue cones) | #490006 | 0.022 |
| Achromatopsia (no color) | #1C1C1C | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42000F
#42000F
oklch(24.1% 0.096 15.9)
- #002526
#002526
oklch(24% 0.041 197.5)
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 #42000F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Maroon #3C0008 ΔE 0.018
- Deep Brown #410200 ΔE 0.024
- Mahogany #4A0100 ΔE 0.031
- Dark Plum #3F012C ΔE 0.054
- Chocolate Brown #411900 ΔE 0.061
- Aubergine #3D0734 ΔE 0.068
- Eggplant #380835 ΔE 0.074
- Dark Brown #341C02 ΔE 0.074
Use #42000F 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.