#1F193F
Closest named color: Oxford Blue (#1B263B). oklch(24.4% 0.07 287.3), rgb(31, 25, 63).
Aa
White text reads best on this color (16.54:1).
About this color
#1F193F is a very dark, muted purple. In OKLCH its lightness is 24%, its chroma 0.070 and its hue 287°. 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 16.54:1.
| Hue family | Purples |
| Lightness | very dark (24%) |
| Chroma | muted (0.070) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.26:1 |
| White text | 16.54:1 |
Values
| HEX | #1F193F |
| RGB | rgb(31, 25, 63) |
| HSL | hsl(249, 43%, 17%) |
| OKLCH | oklch(24.4% 0.07 287.3) |
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 #1F193F | 16.54:1 | AAA | Lc -105.8 | Preferred for body text |
| Black text on #1F193F | 1.26:1 | Fails | Lc 0.0 | Not readable |
| #1F193F text on white | 16.54:1 | AAA | Lc 103.4 | Preferred for body text |
| #1F193F 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#E8E8FA
oklch(93.6% 0.024 285.9)
-
Step 200
200
#D6D5F7
oklch(88.4% 0.047 286.8)
-
Step 300
300
#BDB9F4
oklch(81% 0.083 287.5)
-
Step 400
400
#9C92EE
oklch(70.6% 0.132 287.5)
-
Step 500
500
#8674E9
oklch(63.1% 0.17 287.6)
-
Step 600
600
#715AD7
oklch(55.7% 0.184 287.3)
-
Step 700
700
#5F49BA
oklch(49.1% 0.17 287.4)
-
Step 800
800
#4D3D97
oklch(42.8% 0.141 287)
-
Step 900
900
#403578
oklch(37.8% 0.11 287.5)
-
Step 950
950 (this color)
#1F193F
oklch(24.4% 0.07 287.3)
#1F193F 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) | #072040 | 0.037 |
| Deuteranopia (no green cones) | #071E3E | 0.036 |
| Tritanopia (no blue cones) | #152129 | 0.058 |
| Achromatopsia (no color) | #1F1F1F | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F193F
#1F193F
oklch(24.4% 0.07 287.3)
- #232200
#232200
oklch(24.5% 0.053 108.1)
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 #1F193F, 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 #1B2431 ΔE 0.050
- Dark Indigo #1F0954 ΔE 0.052
- Rich Black #0D1B2A ΔE 0.053
- Navy Blue #001146 ΔE 0.059
- Dark Purple #35063E ΔE 0.060
- Midnight Purple #280137 ΔE 0.061
- Very Dark Purple #2A0134 ΔE 0.063
Use #1F193F 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.