#1755BB
Closest named color: Blue Blue (#2242C7). oklch(47.5% 0.173 260.3), rgb(23, 85, 187).
Aa
White text reads best on this color (6.87:1).
About this color
#1755BB is a medium-dark, vivid blue. In OKLCH its lightness is 48%, its chroma 0.173 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.047 away. White text reads best on it, at 6.87:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.173) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 3.05:1 |
| White text | 6.87:1 |
Values
| HEX | #1755BB |
| RGB | rgb(23, 85, 187) |
| HSL | hsl(217, 78%, 41%) |
| OKLCH | oklch(47.5% 0.173 260.3) |
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 #1755BB | 6.87:1 | AA | Lc -88.1 | Fine for body text |
| Black text on #1755BB | 3.05:1 | AA large text | Lc 20.9 | Dividers and decoration only |
| #1755BB text on white | 6.87:1 | AA | Lc 83.1 | Fine for body text |
| #1755BB text on black | 3.05:1 | AA large text | Lc -18.8 | Dividers and decoration only |
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 700.
-
Step 50
50
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EBFB
oklch(93.7% 0.024 259.8)
-
Step 200
200
#C8DAF9
oklch(88.5% 0.047 261.4)
-
Step 300
300
#A2C2F7
oklch(80.9% 0.083 260.4)
-
Step 400
400
#6FA0F3
oklch(70.7% 0.133 260.5)
-
Step 500
500
#4886EF
oklch(63.2% 0.171 260.3)
-
Step 600
600
#296DDE
oklch(55.7% 0.186 260.2)
-
Step 700
700 (this color)
#1755BB
oklch(47.5% 0.173 260.3)
-
Step 800
800
#1A4A9C
oklch(42.7% 0.144 260.5)
-
Step 900
900
#1B3F7C
oklch(37.8% 0.112 260.3)
-
Step 950
950
#112548
oklch(26.9% 0.07 260.7)
#1755BB 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) | #0062BF | 0.033 |
| Deuteranopia (no green cones) | #0053B9 | 0.011 |
| Tritanopia (no blue cones) | #006E7F | 0.132 |
| Achromatopsia (no color) | #5A5A5A | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1755BB
#1755BB
oklch(47.5% 0.173 260.3)
- #795500
#795500
oklch(47.6% 0.098 80.2)
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 #1755BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.047
- Mid Blue #276AB3 ΔE 0.062
- Majorelle Blue #3F37C9 ΔE 0.071
- Warm Blue #4B57DB ΔE 0.072
- Sapphire #2138AB ΔE 0.073
- Dusk Blue #26538D ΔE 0.074
- Denim Blue #3B5B92 ΔE 0.075
- Cobalt #1E488F ΔE 0.076
Use #1755BB 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.