#175AC4
Closest named color: Blue Blue (#2242C7). oklch(49.3% 0.178 259.9), rgb(23, 90, 196).
Aa
White text reads best on this color (6.37:1).
About this color
#175AC4 is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.178 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.055 away. White text reads best on it, at 6.37:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.178) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 3.29:1 |
| White text | 6.37:1 |
Values
| HEX | #175AC4 |
| RGB | rgb(23, 90, 196) |
| HSL | hsl(217, 79%, 43%) |
| OKLCH | oklch(49.3% 0.178 259.9) |
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 #175AC4 | 6.37:1 | AA | Lc -86.1 | Fine for body text |
| Black text on #175AC4 | 3.29:1 | AA large text | Lc 23.0 | Dividers and decoration only |
| #175AC4 text on white | 6.37:1 | AA | Lc 81.0 | Fine for body text |
| #175AC4 text on black | 3.29:1 | AA large text | Lc -20.9 | 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
#C7DAFA
oklch(88.4% 0.049 260.9)
-
Step 300
300
#A0C2F9
oklch(80.9% 0.087 259.9)
-
Step 400
400
#6CA0F6
oklch(70.7% 0.138 260)
-
Step 500
500
#4486F2
oklch(63.2% 0.176 259.8)
-
Step 600
600
#246CE1
oklch(55.6% 0.192 260)
-
Step 700
700 (this color)
#175AC4
oklch(49.3% 0.178 259.9)
-
Step 800
800
#154A9E
oklch(42.8% 0.148 259.8)
-
Step 900
900
#193F7D
oklch(37.8% 0.114 259.8)
-
Step 950
950
#0F2549
oklch(26.9% 0.073 259.8)
#175AC4 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) | #0067C8 | 0.033 |
| Deuteranopia (no green cones) | #0058C2 | 0.011 |
| Tritanopia (no blue cones) | #007486 | 0.135 |
| Achromatopsia (no color) | #5F5F5F | 0.179 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175AC4
#175AC4
oklch(49.3% 0.178 259.9)
- #7F5900
#7F5900
oklch(49.2% 0.102 79.8)
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 #175AC4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.055
- Mid Blue #276AB3 ΔE 0.055
- Warm Blue #4B57DB ΔE 0.059
- Azul #1D5DEC ΔE 0.063
- Royal Blue #4169E1 ΔE 0.071
- French Blue #436BAD ΔE 0.074
- Majorelle Blue #3F37C9 ΔE 0.078
- Neon Blue #4361EE ΔE 0.079
Use #175AC4 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.