#1B051F
Closest named color: Very Dark Purple (#2A0134). oklch(17.2% 0.06 321.4), rgb(27, 5, 31).
Aa
White text reads best on this color (19.29:1).
About this color
#1B051F is a very dark, muted purple. In OKLCH its lightness is 17%, its chroma 0.060 and its hue 321°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Very Dark Purple (#2A0134), ΔE 0.055 away. White text reads best on it, at 19.29:1.
| Hue family | Purples |
| Lightness | very dark (17%) |
| Chroma | muted (0.060) |
| Temperature | in between |
| Nearest name | Very Dark Purple (#2A0134) |
| Black text | 1.08:1 |
| White text | 19.29:1 |
Values
| HEX | #1B051F |
| RGB | rgb(27, 5, 31) |
| HSL | hsl(291, 72%, 7%) |
| OKLCH | oklch(17.2% 0.06 321.4) |
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 #1B051F | 19.29:1 | AAA | Lc -107.4 | Preferred for body text |
| Black text on #1B051F | 1.08:1 | Fails | Lc 0.0 | Not readable |
| #1B051F text on white | 19.29:1 | AAA | Lc 105.4 | Preferred for body text |
| #1B051F text on black | 1.08:1 | 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
#F9F3F9
oklch(97% 0.01 325.7)
-
Step 100
100
#F1E6F2
oklch(93.7% 0.02 323.2)
-
Step 200
200
#E6D1E9
oklch(88.5% 0.04 322)
-
Step 300
300
#D6B2DD
oklch(80.9% 0.071 320.8)
-
Step 400
400
#C188CB
oklch(70.6% 0.114 321.4)
-
Step 500
500
#B169BE
oklch(63.2% 0.145 321.3)
-
Step 600
600
#9C4EAA
oklch(55.6% 0.158 321.3)
-
Step 700
700
#853E92
oklch(49% 0.148 321.2)
-
Step 800
800
#6C3476
oklch(42.6% 0.121 321.4)
-
Step 900
900
#582E5F
oklch(37.6% 0.095 321.7)
-
Step 950
950 (this color)
#1B051F
oklch(17.2% 0.06 321.4)
#1B051F 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) | #020C20 | 0.059 |
| Deuteranopia (no green cones) | #070F1E | 0.052 |
| Tritanopia (no blue cones) | #1B0810 | 0.036 |
| Achromatopsia (no color) | #0E0E0E | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B051F
#1B051F
oklch(17.2% 0.06 321.4)
- #011500
#011500
oklch(17.1% 0.056 141.3)
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 #1B051F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Purple #2A0134 ΔE 0.055
- Midnight Purple #280137 ΔE 0.056
- Almost Black #070D0D ΔE 0.069
- Very Dark Brown #1D0200 ΔE 0.071
- Rich Navy #001219 ΔE 0.072
- Midnight #03012D ΔE 0.074
- Rich Black #0D1B2A ΔE 0.074
- Dark Navy Blue #00022E ΔE 0.082
Use #1B051F 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.