#193B90
Closest named color: Cobalt (#1E488F). oklch(38.4% 0.146 264.1), rgb(25, 59, 144).
Aa
White text reads best on this color (10.14:1).
About this color
#193B90 is a dark, vivid blue. In OKLCH its lightness is 38%, its chroma 0.146 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.037 away. White text reads best on it, at 10.14:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | vivid (0.146) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.06:1 |
| White text | 10.14:1 |
Values
| HEX | #193B90 |
| RGB | rgb(25, 59, 144) |
| HSL | hsl(223, 70%, 33%) |
| OKLCH | oklch(38.4% 0.146 264.1) |
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 #193B90 | 10.14:1 | AAA | Lc -97.1 | Preferred for body text |
| Black text on #193B90 | 2.06:1 | Fails | Lc 11.0 | Not readable |
| #193B90 text on white | 10.14:1 | AAA | Lc 93.0 | Preferred for body text |
| #193B90 text on black | 2.06:1 | Fails | Lc -9.5 | 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
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#E0EAFF
oklch(93.6% 0.03 265.3)
-
Step 200
200
#C7DAFF
oklch(88.6% 0.055 263.7)
-
Step 300
300
#A1C0FF
oklch(80.8% 0.096 264.1)
-
Step 400
400
#6F9DFF
oklch(70.7% 0.152 263.9)
-
Step 500
500
#4A80FF
oklch(63.1% 0.198 264.2)
-
Step 600
600
#245FFF
oklch(55.6% 0.245 264.2)
-
Step 700
700
#184DDE
oklch(49.1% 0.227 264)
-
Step 800
800
#1640B3
oklch(42.6% 0.188 264.2)
-
Step 900
900 (this color)
#193B90
oklch(38.4% 0.146 264.1)
-
Step 950
950
#0E2253
oklch(26.9% 0.093 264.3)
#193B90 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) | #004793 | 0.032 |
| Deuteranopia (no green cones) | #003C8E | 0.014 |
| Tritanopia (no blue cones) | #00505F | 0.113 |
| Achromatopsia (no color) | #414141 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #193B90
#193B90
oklch(38.4% 0.146 264.1)
- #573F00
#573F00
oklch(38.4% 0.079 84.1)
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 #193B90, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.037
- Twilight Blue #0A437A ΔE 0.045
- Sapphire #2138AB ΔE 0.045
- Blueberry #464196 ΔE 0.063
- Dark Slate Blue #483D8B ΔE 0.063
- Light Navy #155084 ΔE 0.064
- Marine Blue #01386A ΔE 0.068
- Dusk Blue #26538D ΔE 0.071
Use #193B90 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.