#1B010A
Closest named color: Very Dark Brown (#1D0200). oklch(14.8% 0.055 359.2), rgb(27, 1, 10).
Aa
White text reads best on this color (19.89:1).
About this color
#1B010A is a very dark, muted red. In OKLCH its lightness is 15%, its chroma 0.055 and its hue 359°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.033 away. White text reads best on it, at 19.89:1.
| Hue family | Reds |
| Lightness | very dark (15%) |
| Chroma | muted (0.055) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.05:1 |
| White text | 19.89:1 |
Values
| HEX | #1B010A |
| RGB | rgb(27, 1, 10) |
| HSL | hsl(339, 93%, 5%) |
| OKLCH | oklch(14.8% 0.055 359.2) |
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 #1B010A | 19.89:1 | AAA | Lc -107.5 | Preferred for body text |
| Black text on #1B010A | 1.05:1 | Fails | Lc 0.0 | Not readable |
| #1B010A text on white | 19.89:1 | AAA | Lc 105.6 | Preferred for body text |
| #1B010A text on black | 1.05:1 | 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
#FBF3F5
oklch(97.1% 0.009 0.1)
-
Step 100
100
#F5E5E9
oklch(93.6% 0.018 0.4)
-
Step 200
200
#EED0D8
oklch(88.5% 0.035 359.9)
-
Step 300
300
#E5B0BF
oklch(81% 0.065 359.9)
-
Step 400
400
#D5859F
oklch(70.7% 0.103 359.1)
-
Step 500
500
#C86487
oklch(63.1% 0.132 359.4)
-
Step 600
600
#B34971
oklch(55.6% 0.143 359.3)
-
Step 700
700
#9A395F
oklch(49.1% 0.135 359)
-
Step 800
800
#7D304D
oklch(42.7% 0.111 359.4)
-
Step 900
900
#652B40
oklch(37.6% 0.087 359.3)
-
Step 950
950 (this color)
#1B010A
oklch(14.8% 0.055 359.2)
#1B010A 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) | #05060A | 0.061 |
| Deuteranopia (no green cones) | #0C0B09 | 0.055 |
| Tritanopia (no blue cones) | #1E0004 | 0.017 |
| Achromatopsia (no color) | #090909 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B010A
#1B010A
oklch(14.8% 0.055 359.2)
- #000E0B
#000E0B
oklch(14.7% 0.027 180.7)
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 #1B010A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.033
- Almost Black #070D0D ΔE 0.065
- Rich Navy #001219 ΔE 0.083
- Dark Maroon #3C0008 ΔE 0.089
- Very Dark Purple #2A0134 ΔE 0.092
- Midnight Purple #280137 ΔE 0.096
- Rich Black #0D1B2A ΔE 0.102
- Midnight #03012D ΔE 0.102
Use #1B010A 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.