#1F143E
Closest named color: Dark Indigo (#1F0954). oklch(23.3% 0.077 291.3), rgb(31, 20, 62).
Aa
White text reads best on this color (17.10:1).
About this color
#1F143E is a very dark, moderately saturated purple. In OKLCH its lightness is 23%, its chroma 0.077 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.046 away. White text reads best on it, at 17.10:1.
| Hue family | Purples |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.077) |
| Temperature | in between |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.22:1 |
| White text | 17.10:1 |
Values
| HEX | #1F143E |
| RGB | rgb(31, 20, 62) |
| HSL | hsl(256, 51%, 16%) |
| OKLCH | oklch(23.3% 0.077 291.3) |
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 #1F143E | 17.10:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #1F143E | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #1F143E text on white | 17.10:1 | AAA | Lc 103.8 | Preferred for body text |
| #1F143E 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
#E9E7FB
oklch(93.5% 0.027 290.5)
-
Step 200
200
#D9D4F9
oklch(88.6% 0.051 291.5)
-
Step 300
300
#C1B7F7
oklch(81% 0.09 291.4)
-
Step 400
400
#A28EF3
oklch(70.6% 0.145 291.3)
-
Step 500
500
#8D6EEF
oklch(63% 0.186 291.2)
-
Step 600
600
#7952DD
oklch(55.6% 0.202 291.3)
-
Step 700
700
#6641C0
oklch(49% 0.188 291.3)
-
Step 800
800
#53379B
oklch(42.7% 0.155 291.3)
-
Step 900
900
#44317C
oklch(37.7% 0.122 291.1)
-
Step 950
950 (this color)
#1F143E
oklch(23.3% 0.077 291.3)
#1F143E 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) | #001C3F | 0.048 |
| Deuteranopia (no green cones) | #001B3D | 0.048 |
| Tritanopia (no blue cones) | #161D26 | 0.062 |
| Achromatopsia (no color) | #1C1C1C | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F143E
#1F143E
oklch(23.3% 0.077 291.3)
- #1F1F00
#1F1F00
oklch(23.2% 0.05 109.8)
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 #1F143E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.046
- Midnight Purple #280137 ΔE 0.048
- Very Dark Purple #2A0134 ΔE 0.052
- Dark Purple #35063E ΔE 0.055
- Navy Blue #001146 ΔE 0.055
- Rich Black #0D1B2A ΔE 0.057
- Oxford Blue #1B263B ΔE 0.058
- Deep Purple #36013F ΔE 0.061
Use #1F143E 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.