#1F193C
Closest named color: Oxford Blue (#1B263B). oklch(24.1% 0.065 288.5), rgb(31, 25, 60).
Aa
White text reads best on this color (16.63:1).
About this color
#1F193C is a very dark, muted purple. In OKLCH its lightness is 24%, its chroma 0.065 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.043 away. White text reads best on it, at 16.63:1.
| Hue family | Purples |
| Lightness | very dark (24%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.26:1 |
| White text | 16.63:1 |
Values
| HEX | #1F193C |
| RGB | rgb(31, 25, 60) |
| HSL | hsl(250, 41%, 17%) |
| OKLCH | oklch(24.1% 0.065 288.5) |
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 #1F193C | 16.63:1 | AAA | Lc -105.9 | Preferred for body text |
| Black text on #1F193C | 1.26:1 | Fails | Lc 0.0 | Not readable |
| #1F193C text on white | 16.63:1 | AAA | Lc 103.5 | Preferred for body text |
| #1F193C text on black | 1.26:1 | 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
#F5F4FC
oklch(97% 0.011 292)
-
Step 100
100
#E9E8F8
oklch(93.6% 0.021 288.9)
-
Step 200
200
#D7D5F4
oklch(88.4% 0.042 288.5)
-
Step 300
300
#BEB9F0
oklch(80.9% 0.077 288.7)
-
Step 400
400
#9E93E8
oklch(70.7% 0.123 288.8)
-
Step 500
500
#8776E1
oklch(63% 0.157 288.4)
-
Step 600
600
#725CCF
oklch(55.5% 0.171 288.4)
-
Step 700
700
#604BB3
oklch(49% 0.158 288.5)
-
Step 800
800
#4E3E91
oklch(42.6% 0.131 288.4)
-
Step 900
900
#413674
oklch(37.8% 0.102 288.7)
-
Step 950
950 (this color)
#1F193C
oklch(24.1% 0.065 288.5)
#1F193C 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) | #0A1F3D | 0.034 |
| Deuteranopia (no green cones) | #0A1D3B | 0.033 |
| Tritanopia (no blue cones) | #172027 | 0.054 |
| Achromatopsia (no color) | #1E1E1E | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F193C
#1F193C
oklch(24.1% 0.065 288.5)
- #222100
#222100
oklch(24.1% 0.052 108.1)
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 #1F193C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.043
- Dark #1B2431 ΔE 0.046
- Rich Black #0D1B2A ΔE 0.048
- Dark Indigo #1F0954 ΔE 0.057
- Midnight Purple #280137 ΔE 0.060
- Dark Purple #35063E ΔE 0.061
- Navy Blue #001146 ΔE 0.061
- Jet #212529 ΔE 0.061
Use #1F193C 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.