#193981
Closest named color: Twilight Blue (#0A437A). oklch(36.7% 0.128 263.4), rgb(25, 57, 129).
Aa
White text reads best on this color (10.80:1).
About this color
#193981 is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.128 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.032 away. White text reads best on it, at 10.80:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.128) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 1.94:1 |
| White text | 10.80:1 |
Values
| HEX | #193981 |
| RGB | rgb(25, 57, 129) |
| HSL | hsl(222, 68%, 30%) |
| OKLCH | oklch(36.7% 0.128 263.4) |
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 #193981 | 10.80:1 | AAA | Lc -98.5 | Preferred for body text |
| Black text on #193981 | 1.94:1 | Fails | Lc 9.3 | Not readable |
| #193981 text on white | 10.80:1 | AAA | Lc 94.6 | Preferred for body text |
| #193981 text on black | 1.94:1 | Fails | Lc -8.0 | 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 900.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EAFD
oklch(93.5% 0.028 263.4)
-
Step 200
200
#C7DAFD
oklch(88.5% 0.053 262.7)
-
Step 300
300
#A1C1FF
oklch(81% 0.095 263.3)
-
Step 400
400
#6E9DFF
oklch(70.6% 0.153 263.6)
-
Step 500
500
#4881FE
oklch(63.1% 0.196 263.4)
-
Step 600
600
#2C66ED
oklch(55.6% 0.213 263.4)
-
Step 700
700
#1F54CE
oklch(49.1% 0.197 263.2)
-
Step 800
800
#1B45A7
oklch(42.6% 0.165 263.4)
-
Step 900
900 (this color)
#193981
oklch(36.7% 0.128 263.4)
-
Step 950
950
#11244D
oklch(27.1% 0.08 263.3)
#193981 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) | #004284 | 0.026 |
| Deuteranopia (no green cones) | #003980 | 0.015 |
| Tritanopia (no blue cones) | #004B57 | 0.100 |
| Achromatopsia (no color) | #3D3D3D | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #193981
#193981
oklch(36.7% 0.128 263.4)
- #523B00
#523B00
oklch(36.8% 0.076 83.9)
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 #193981, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.032
- Marine Blue #01386A ΔE 0.044
- Cobalt #1E488F ΔE 0.047
- Light Navy #155084 ΔE 0.066
- Marine #042E60 ΔE 0.068
- Dark Slate Blue #483D8B ΔE 0.069
- Sapphire #2138AB ΔE 0.070
- Prussian Blue #1D3557 ΔE 0.072
Use #193981 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.