#1748A2
Closest named color: Cobalt (#1E488F). oklch(42.7% 0.155 261.3), rgb(23, 72, 162).
Aa
White text reads best on this color (8.45:1).
About this color
#1748A2 is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.155 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.031 away. White text reads best on it, at 8.45:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.155) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.48:1 |
| White text | 8.45:1 |
Values
| HEX | #1748A2 |
| RGB | rgb(23, 72, 162) |
| HSL | hsl(219, 75%, 36%) |
| OKLCH | oklch(42.7% 0.155 261.3) |
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 #1748A2 | 8.45:1 | AAA | Lc -93.1 | Preferred for body text |
| Black text on #1748A2 | 2.48:1 | Fails | Lc 15.5 | Dividers and decoration only |
| #1748A2 text on white | 8.45:1 | AAA | Lc 88.5 | Fine for body text |
| #1748A2 text on black | 2.48:1 | Fails | Lc -13.7 | 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 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
#C7DAFB
oklch(88.5% 0.05 261.5)
-
Step 300
300
#A0C1FC
oklch(80.8% 0.091 261.8)
-
Step 400
400
#6C9FFA
oklch(70.7% 0.145 261.3)
-
Step 500
500
#4584F8
oklch(63.2% 0.185 261.4)
-
Step 600
600
#266AE7
oklch(55.7% 0.202 261.3)
-
Step 700
700
#1957C8
oklch(49% 0.187 261.3)
-
Step 800
800 (this color)
#1748A2
oklch(42.7% 0.155 261.3)
-
Step 900
900
#193E81
oklch(37.8% 0.121 261.1)
-
Step 950
950
#10254B
oklch(27.1% 0.076 261.2)
#1748A2 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) | #0054A5 | 0.031 |
| Deuteranopia (no green cones) | #0047A0 | 0.012 |
| Tritanopia (no blue cones) | #005E6E | 0.118 |
| Achromatopsia (no color) | #4D4D4D | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1748A2
#1748A2
oklch(42.7% 0.155 261.3)
- #674900
#674900
oklch(42.7% 0.088 81.6)
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 #1748A2, closest first.
No curated palette has a color within ΔE 0.04 of #1748A2.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.031
- Sapphire #2138AB ΔE 0.040
- Dusk Blue #26538D ΔE 0.051
- Blueberry #464196 ΔE 0.055
- Light Navy #155084 ΔE 0.057
- Blue Blue #2242C7 ΔE 0.061
- Deep Sea Blue #015482 ΔE 0.067
- Dark Slate Blue #483D8B ΔE 0.068
Use #1748A2 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.