#1A193F
Closest named color: Oxford Blue (#1B263B). oklch(23.9% 0.07 280.8), rgb(26, 25, 63).
Aa
White text reads best on this color (16.73:1).
About this color
#1A193F is a very dark, moderately saturated purple. In OKLCH its lightness is 24%, its chroma 0.070 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.045 away. White text reads best on it, at 16.73:1.
| Hue family | Purples |
| Lightness | very dark (24%) |
| Chroma | moderately saturated (0.070) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.25:1 |
| White text | 16.73:1 |
Values
| HEX | #1A193F |
| RGB | rgb(26, 25, 63) |
| HSL | hsl(242, 43%, 17%) |
| OKLCH | oklch(23.9% 0.07 280.8) |
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 #1A193F | 16.73:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #1A193F | 1.25:1 | Fails | Lc 0.0 | Not readable |
| #1A193F text on white | 16.73:1 | AAA | Lc 103.5 | Preferred for body text |
| #1A193F 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
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E6E8FA
oklch(93.5% 0.024 280.9)
-
Step 200
200
#D3D6F8
oklch(88.5% 0.047 281.4)
-
Step 300
300
#B6BBF6
oklch(80.9% 0.083 280.6)
-
Step 400
400
#9295F2
oklch(70.6% 0.135 281)
-
Step 500
500
#7A78ED
oklch(63.1% 0.171 281.1)
-
Step 600
600
#645EDB
oklch(55.6% 0.185 280.7)
-
Step 700
700
#544CBE
oklch(49% 0.173 281.1)
-
Step 800
800
#443F9A
oklch(42.6% 0.144 280.8)
-
Step 900
900
#39377A
oklch(37.7% 0.111 281)
-
Step 950
950 (this color)
#1A193F
oklch(23.9% 0.07 280.8)
#1A193F 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) | #051F40 | 0.030 |
| Deuteranopia (no green cones) | #031C3E | 0.031 |
| Tritanopia (no blue cones) | #0B2129 | 0.059 |
| Achromatopsia (no color) | #1E1E1E | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A193F
#1A193F
oklch(23.9% 0.07 280.8)
- #241F00
#241F00
oklch(23.8% 0.05 100.7)
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 #1A193F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.045
- Rich Black #0D1B2A ΔE 0.048
- Dark #1B2431 ΔE 0.050
- Navy Blue #001146 ΔE 0.050
- Dark Indigo #1F0954 ΔE 0.052
- Midnight Purple #280137 ΔE 0.064
- Jet #212529 ΔE 0.067
- Very Dark Purple #2A0134 ΔE 0.068
Use #1A193F 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.