#1F153B
Closest named color: Midnight Purple (#280137). oklch(23.2% 0.07 292.1), rgb(31, 21, 59).
Aa
White text reads best on this color (17.09:1).
About this color
#1F153B is a very dark, moderately saturated purple. In OKLCH its lightness is 23%, its chroma 0.070 and its hue 292°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Midnight Purple (#280137), ΔE 0.050 away. White text reads best on it, at 17.09:1.
| Hue family | Purples |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.070) |
| Temperature | in between |
| Nearest name | Midnight Purple (#280137) |
| Black text | 1.22:1 |
| White text | 17.09:1 |
Values
| HEX | #1F153B |
| RGB | rgb(31, 21, 59) |
| HSL | hsl(256, 48%, 16%) |
| OKLCH | oklch(23.2% 0.07 292.1) |
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 #1F153B | 17.09:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #1F153B | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #1F153B text on white | 17.09:1 | AAA | Lc 103.8 | Preferred for body text |
| #1F153B text on black | 1.22:1 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#EAE7F9
oklch(93.6% 0.024 293.6)
-
Step 200
200
#D9D4F6
oklch(88.5% 0.047 292.2)
-
Step 300
300
#C1B7F3
oklch(80.8% 0.084 292)
-
Step 400
400
#A390EC
oklch(70.7% 0.133 292.1)
-
Step 500
500
#8E71E6
oklch(63.1% 0.17 292.2)
-
Step 600
600
#7956D4
oklch(55.5% 0.185 292.1)
-
Step 700
700
#6645B8
oklch(49% 0.173 292)
-
Step 800
800
#533A95
oklch(42.7% 0.143 291.9)
-
Step 900
900
#443376
oklch(37.6% 0.11 291.9)
-
Step 950
950 (this color)
#1F153B
oklch(23.2% 0.07 292.1)
#1F153B 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) | #031C3C | 0.044 |
| Deuteranopia (no green cones) | #051B3A | 0.042 |
| Tritanopia (no blue cones) | #171D25 | 0.057 |
| Achromatopsia (no color) | #1C1C1C | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F153B
#1F153B
oklch(23.2% 0.07 292.1)
- #1E1F00
#1E1F00
oklch(23% 0.051 111.5)
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 #1F153B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Purple #280137 ΔE 0.050
- Rich Black #0D1B2A ΔE 0.051
- Very Dark Purple #2A0134 ΔE 0.053
- Dark Indigo #1F0954 ΔE 0.053
- Oxford Blue #1B263B ΔE 0.054
- Dark Purple #35063E ΔE 0.056
- Dark #1B2431 ΔE 0.056
- Navy Blue #001146 ΔE 0.058
Use #1F153B 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.