#1747AC
Closest named color: Sapphire (#2138AB). oklch(43.3% 0.17 262.5), rgb(23, 71, 172).
Aa
White text reads best on this color (8.28:1).
About this color
#1747AC is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.170 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.034 away. White text reads best on it, at 8.28:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.170) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.53:1 |
| White text | 8.28:1 |
Values
| HEX | #1747AC |
| RGB | rgb(23, 71, 172) |
| HSL | hsl(221, 76%, 38%) |
| OKLCH | oklch(43.3% 0.17 262.5) |
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 #1747AC | 8.28:1 | AAA | Lc -92.6 | Preferred for body text |
| Black text on #1747AC | 2.53:1 | Fails | Lc 16.1 | Dividers and decoration only |
| #1747AC text on white | 8.28:1 | AAA | Lc 87.9 | Fine for body text |
| #1747AC text on black | 2.53:1 | Fails | Lc -14.2 | 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
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#E0EAFE
oklch(93.6% 0.029 264.4)
-
Step 200
200
#C6DAFF
oklch(88.5% 0.056 262.8)
-
Step 300
300
#A0C1FF
oklch(80.9% 0.095 262.7)
-
Step 400
400
#6C9EFF
oklch(70.7% 0.152 262.5)
-
Step 500
500
#4481FF
oklch(63% 0.198 262.7)
-
Step 600
600
#2366F1
oklch(55.6% 0.22 262.4)
-
Step 700
700
#1753D2
oklch(49.1% 0.205 262.6)
-
Step 800
800 (this color)
#1747AC
oklch(43.3% 0.17 262.5)
-
Step 900
900
#183C86
oklch(37.8% 0.131 262.5)
-
Step 950
950
#0F244F
oklch(27.1% 0.084 262.6)
#1747AC 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) | #0055AF | 0.035 |
| Deuteranopia (no green cones) | #0048AA | 0.010 |
| Tritanopia (no blue cones) | #006172 | 0.131 |
| Achromatopsia (no color) | #4E4E4E | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1747AC
#1747AC
oklch(43.3% 0.17 262.5)
- #694B00
#694B00
oklch(43.4% 0.089 82.2)
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 #1747AC, closest first.
No curated palette has a color within ΔE 0.04 of #1747AC.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.034
- Blue Blue #2242C7 ΔE 0.045
- Cobalt #1E488F ΔE 0.048
- Blueberry #464196 ΔE 0.062
- Dusk Blue #26538D ΔE 0.064
- Majorelle Blue #3F37C9 ΔE 0.066
- Light Navy #155084 ΔE 0.073
- Dark Slate Blue #483D8B ΔE 0.077
Use #1747AC 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.