#1F133D
Closest named color: Midnight Purple (#280137). oklch(23% 0.077 292.4), rgb(31, 19, 61).
Aa
White text reads best on this color (17.23:1).
About this color
#1F133D is a very dark, moderately saturated purple. In OKLCH its lightness is 23%, its chroma 0.077 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 0.046 away. White text reads best on it, at 17.23:1.
| Hue family | Purples |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.077) |
| Temperature | in between |
| Nearest name | Midnight Purple (#280137) |
| Black text | 1.21:1 |
| White text | 17.23:1 |
Values
| HEX | #1F133D |
| RGB | rgb(31, 19, 61) |
| HSL | hsl(257, 53%, 16%) |
| OKLCH | oklch(23% 0.077 292.4) |
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 #1F133D | 17.23:1 | AAA | Lc -106.3 | Preferred for body text |
| Black text on #1F133D | 1.21:1 | Fails | Lc 0.0 | Not readable |
| #1F133D text on white | 17.23:1 | AAA | Lc 103.9 | Preferred for body text |
| #1F133D text on black | 1.21:1 | 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
#EAE7FB
oklch(93.6% 0.027 292.8)
-
Step 200
200
#D9D4F9
oklch(88.6% 0.051 291.5)
-
Step 300
300
#C2B6F7
oklch(80.9% 0.091 292.7)
-
Step 400
400
#A48EF3
oklch(70.8% 0.145 292.3)
-
Step 500
500
#8F6DEE
oklch(63% 0.186 292.4)
-
Step 600
600
#7B51DD
oklch(55.6% 0.203 292.3)
-
Step 700
700
#6840C0
oklch(49.1% 0.189 292.4)
-
Step 800
800
#55369B
oklch(42.7% 0.156 292.7)
-
Step 900
900
#45307B
oklch(37.6% 0.122 292.4)
-
Step 950
950 (this color)
#1F133D
oklch(23% 0.077 292.4)
#1F133D 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) | #001C3E | 0.049 |
| Deuteranopia (no green cones) | #001A3C | 0.049 |
| Tritanopia (no blue cones) | #171C25 | 0.061 |
| Achromatopsia (no color) | #1B1B1B | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F133D
#1F133D
oklch(23% 0.077 292.4)
- #1D1F00
#1D1F00
oklch(22.9% 0.051 113.2)
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 #1F133D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Purple #280137 ΔE 0.046
- Dark Indigo #1F0954 ΔE 0.047
- Very Dark Purple #2A0134 ΔE 0.049
- Dark Purple #35063E ΔE 0.054
- Navy Blue #001146 ΔE 0.056
- Rich Black #0D1B2A ΔE 0.057
- Oxford Blue #1B263B ΔE 0.060
- Deep Purple #36013F ΔE 0.060
Use #1F133D 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.