#175AC0
Closest named color: Mid Blue (#276AB3). oklch(49% 0.173 259.5), rgb(23, 90, 192).
Aa
White text reads best on this color (6.44:1).
About this color
#175AC0 is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.173 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.053 away. White text reads best on it, at 6.44:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.173) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.26:1 |
| White text | 6.44:1 |
Values
| HEX | #175AC0 |
| RGB | rgb(23, 90, 192) |
| HSL | hsl(216, 79%, 42%) |
| OKLCH | oklch(49% 0.173 259.5) |
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 #175AC0 | 6.44:1 | AA | Lc -86.5 | Fine for body text |
| Black text on #175AC0 | 3.26:1 | AA large text | Lc 22.7 | Dividers and decoration only |
| #175AC0 text on white | 6.44:1 | AA | Lc 81.3 | Fine for body text |
| #175AC0 text on black | 3.26:1 | AA large text | Lc -20.5 | 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
#E0EBFB
oklch(93.7% 0.025 257.6)
-
Step 200
200
#C7DAF9
oklch(88.4% 0.048 260.2)
-
Step 300
300
#A1C2F7
oklch(80.9% 0.084 259.8)
-
Step 400
400
#6DA1F3
oklch(70.8% 0.133 259.2)
-
Step 500
500
#4586EF
oklch(63% 0.171 259.6)
-
Step 600
600
#256DDE
oklch(55.6% 0.187 259.6)
-
Step 700
700 (this color)
#175AC0
oklch(49% 0.173 259.5)
-
Step 800
800
#164A9C
oklch(42.6% 0.145 259.6)
-
Step 900
900
#193F7C
oklch(37.7% 0.112 259.6)
-
Step 950
950
#102548
oklch(26.9% 0.071 260)
#175AC0 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) | #0366C4 | 0.031 |
| Deuteranopia (no green cones) | #0057BE | 0.013 |
| Tritanopia (no blue cones) | #007384 | 0.131 |
| Achromatopsia (no color) | #5E5E5E | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175AC0
#175AC0
oklch(49% 0.173 259.5)
- #7F5800
#7F5800
oklch(49% 0.102 78.8)
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 #175AC0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.053
- Blue Blue #2242C7 ΔE 0.057
- Warm Blue #4B57DB ΔE 0.064
- Azul #1D5DEC ΔE 0.069
- French Blue #436BAD ΔE 0.072
- Royal Blue #4169E1 ΔE 0.075
- Denim Blue #3B5B92 ΔE 0.078
- Majorelle Blue #3F37C9 ΔE 0.079
Use #175AC0 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.