#1745A2
Closest named color: Cobalt (#1E488F). oklch(42.1% 0.159 262.2), rgb(23, 69, 162).
Aa
White text reads best on this color (8.71:1).
About this color
#1745A2 is a dark, vivid blue. In OKLCH its lightness is 42%, its chroma 0.159 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.033 away. White text reads best on it, at 8.71:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | vivid (0.159) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.40:1 |
| White text | 8.71:1 |
Values
| HEX | #1745A2 |
| RGB | rgb(23, 69, 162) |
| HSL | hsl(220, 75%, 36%) |
| OKLCH | oklch(42.1% 0.159 262.2) |
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 #1745A2 | 8.71:1 | AAA | Lc -93.8 | Preferred for body text |
| Black text on #1745A2 | 2.40:1 | Fails | Lc 14.7 | Not readable |
| #1745A2 text on white | 8.71:1 | AAA | Lc 89.3 | Fine for body text |
| #1745A2 text on black | 2.40:1 | Fails | Lc -13.0 | 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 800.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EAFC
oklch(93.5% 0.027 262.3)
-
Step 200
200
#C7DAFC
oklch(88.5% 0.051 262.1)
-
Step 300
300
#A0C1FD
oklch(80.9% 0.093 262.1)
-
Step 400
400
#6D9EFD
oklch(70.7% 0.149 262.5)
-
Step 500
500
#4683FA
oklch(63.2% 0.189 262.1)
-
Step 600
600
#2868E9
oklch(55.5% 0.206 262.2)
-
Step 700
700
#1C56CB
oklch(49.2% 0.191 262.2)
-
Step 800
800 (this color)
#1745A2
oklch(42.1% 0.159 262.2)
-
Step 900
900
#1A3D82
oklch(37.7% 0.123 262.1)
-
Step 950
950
#10244C
oklch(26.9% 0.079 262.4)
#1745A2 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) | #0052A5 | 0.034 |
| Deuteranopia (no green cones) | #0045A0 | 0.011 |
| Tritanopia (no blue cones) | #005C6C | 0.122 |
| Achromatopsia (no color) | #4B4B4B | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1745A2
#1745A2
oklch(42.1% 0.159 262.2)
- #644800
#644800
oklch(42.1% 0.087 83)
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 #1745A2, closest first.
No curated palette has a color within ΔE 0.04 of #1745A2.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.033
- Sapphire #2138AB ΔE 0.033
- Blueberry #464196 ΔE 0.056
- Dusk Blue #26538D ΔE 0.057
- Blue Blue #2242C7 ΔE 0.060
- Light Navy #155084 ΔE 0.061
- Dark Slate Blue #483D8B ΔE 0.068
- Twilight Blue #0A437A ΔE 0.068
Use #1745A2 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.