#1F193A
Closest named color: Oxford Blue (#1B263B). oklch(24% 0.061 289.3), rgb(31, 25, 58).
Aa
White text reads best on this color (16.68:1).
About this color
#1F193A is a very dark, muted purple. In OKLCH its lightness is 24%, its chroma 0.061 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.042 away. White text reads best on it, at 16.68:1.
| Hue family | Purples |
| Lightness | very dark (24%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.25:1 |
| White text | 16.68:1 |
Values
| HEX | #1F193A |
| RGB | rgb(31, 25, 58) |
| HSL | hsl(251, 40%, 16%) |
| OKLCH | oklch(24% 0.061 289.3) |
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 #1F193A | 16.68:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #1F193A | 1.25:1 | Fails | Lc 0.0 | Not readable |
| #1F193A text on white | 16.68:1 | AAA | Lc 103.5 | Preferred for body text |
| #1F193A text on black | 1.25:1 | 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
#E9E8F7
oklch(93.6% 0.02 289.1)
-
Step 200
200
#D8D5F3
oklch(88.5% 0.041 290.1)
-
Step 300
300
#BFB9ED
oklch(80.8% 0.073 289.9)
-
Step 400
400
#9F94E4
oklch(70.7% 0.116 289.4)
-
Step 500
500
#8977DC
oklch(63.1% 0.148 289.6)
-
Step 600
600
#735ECA
oklch(55.6% 0.161 289)
-
Step 700
700
#614DAF
oklch(49.2% 0.15 289.1)
-
Step 800
800
#4F3F8D
oklch(42.6% 0.124 289.5)
-
Step 900
900
#413771
oklch(37.8% 0.096 288.9)
-
Step 950
950 (this color)
#1F193A
oklch(24% 0.061 289.3)
#1F193A 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) | #0C1F3B | 0.033 |
| Deuteranopia (no green cones) | #0C1D39 | 0.031 |
| Tritanopia (no blue cones) | #182026 | 0.052 |
| Achromatopsia (no color) | #1E1E1E | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F193A
#1F193A
oklch(24% 0.061 289.3)
- #212100
#212100
oklch(24% 0.052 109.8)
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 #1F193A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.042
- Dark #1B2431 ΔE 0.044
- Rich Black #0D1B2A ΔE 0.046
- Jet #212529 ΔE 0.059
- Midnight Purple #280137 ΔE 0.060
- Dark Indigo #1F0954 ΔE 0.061
- Dark Purple #35063E ΔE 0.061
- Very Dark Purple #2A0134 ΔE 0.062
Use #1F193A 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.