#1F1A43
Closest named color: Oxford Blue (#1B263B). oklch(24.9% 0.075 285.2), rgb(31, 26, 67).
Aa
White text reads best on this color (16.31:1).
About this color
#1F1A43 is a very dark, moderately saturated purple. In OKLCH its lightness is 25%, its chroma 0.075 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.044 away. White text reads best on it, at 16.31:1.
| Hue family | Purples |
| Lightness | very dark (25%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.28:1 |
| White text | 16.31:1 |
Values
| HEX | #1F1A43 |
| RGB | rgb(31, 26, 67) |
| HSL | hsl(247, 44%, 18%) |
| OKLCH | oklch(24.9% 0.075 285.2) |
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 #1F1A43 | 16.31:1 | AAA | Lc -105.7 | Preferred for body text |
| Black text on #1F1A43 | 1.28:1 | Fails | Lc 0.0 | Not readable |
| #1F1A43 text on white | 16.31:1 | AAA | Lc 103.1 | Preferred for body text |
| #1F1A43 text on black | 1.28:1 | 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
#F4F4FD
oklch(97% 0.012 286.2)
-
Step 100
100
#E8E8FB
oklch(93.7% 0.026 285.9)
-
Step 200
200
#D5D5F9
oklch(88.4% 0.049 285.3)
-
Step 300
300
#BAB9F8
oklch(80.9% 0.088 285)
-
Step 400
400
#9992F4
oklch(70.7% 0.141 285.5)
-
Step 500
500
#8274F0
oklch(63.2% 0.18 285.2)
-
Step 600
600
#6D58DF
oklch(55.6% 0.197 285.1)
-
Step 700
700
#5C47C1
oklch(49.1% 0.182 285.4)
-
Step 800
800
#4A3B9C
oklch(42.6% 0.151 285.1)
-
Step 900
900
#3E347C
oklch(37.7% 0.118 285.6)
-
Step 950
950 (this color)
#1F1A43
oklch(24.9% 0.075 285.2)
#1F1A43 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) | #052144 | 0.038 |
| Deuteranopia (no green cones) | #041F42 | 0.038 |
| Tritanopia (no blue cones) | #13232B | 0.063 |
| Achromatopsia (no color) | #202020 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F1A43
#1F1A43
oklch(24.9% 0.075 285.2)
- #252300
#252300
oklch(25% 0.054 106.5)
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 #1F1A43, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.044
- Dark Indigo #1F0954 ΔE 0.048
- Dark #1B2431 ΔE 0.052
- Rich Black #0D1B2A ΔE 0.058
- Navy Blue #001146 ΔE 0.059
- Dark Purple #35063E ΔE 0.062
- Midnight Purple #280137 ΔE 0.065
- Space Cadet #2B2D42 ΔE 0.067
Use #1F1A43 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.