#193B75
Closest named color: Twilight Blue (#0A437A). oklch(36.2% 0.107 260.4), rgb(25, 59, 117).
Aa
White text reads best on this color (10.91:1).
About this color
#193B75 is a dark, moderately saturated blue. In OKLCH its lightness is 36%, its chroma 0.107 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.024 away. White text reads best on it, at 10.91:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 1.92:1 |
| White text | 10.91:1 |
Values
| HEX | #193B75 |
| RGB | rgb(25, 59, 117) |
| HSL | hsl(218, 65%, 28%) |
| OKLCH | oklch(36.2% 0.107 260.4) |
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 #193B75 | 10.91:1 | AAA | Lc -98.8 | Preferred for body text |
| Black text on #193B75 | 1.92:1 | Fails | Lc 9.0 | Not readable |
| #193B75 text on white | 10.91:1 | AAA | Lc 94.9 | Preferred for body text |
| #193B75 text on black | 1.92:1 | Fails | Lc -7.7 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFA
oklch(93.5% 0.024 262.1)
-
Step 200
200
#C8DAF7
oklch(88.4% 0.045 259.9)
-
Step 300
300
#A3C2F5
oklch(80.9% 0.08 260.3)
-
Step 400
400
#71A0F0
oklch(70.6% 0.128 260.6)
-
Step 500
500
#4B86EB
oklch(63% 0.164 260.4)
-
Step 600
600
#2D6DDA
oklch(55.5% 0.18 260.4)
-
Step 700
700
#205BBD
oklch(49.2% 0.166 260.2)
-
Step 800
800
#1D4B99
oklch(42.8% 0.137 260.3)
-
Step 900
900 (this color)
#193B75
oklch(36.2% 0.107 260.4)
-
Step 950
950
#122547
oklch(26.9% 0.068 261.1)
#193B75 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) | #1B4177 | 0.018 |
| Deuteranopia (no green cones) | #023974 | 0.017 |
| Tritanopia (no blue cones) | #004952 | 0.085 |
| Achromatopsia (no color) | #3D3D3D | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #193B75
#193B75
oklch(36.2% 0.107 260.4)
- #523800
#523800
oklch(36.1% 0.075 79.6)
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 #193B75, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.024
- Marine Blue #01386A ΔE 0.028
- Prussian Blue #1D3557 ΔE 0.053
- Cobalt #1E488F ΔE 0.056
- Marine #042E60 ΔE 0.056
- Light Navy #155084 ΔE 0.064
- Dark Grey Blue #29465B ΔE 0.065
- Dark Blue Grey #1F3B4D ΔE 0.070
Use #193B75 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.