#175ACE
Closest named color: Azul (#1D5DEC). oklch(50.1% 0.191 260.9), rgb(23, 90, 206).
Aa
White text reads best on this color (6.19:1).
About this color
#175ACE is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.191 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Azul (#1D5DEC), ΔE 0.047 away. White text reads best on it, at 6.19:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.191) |
| Temperature | cool |
| Nearest name | Azul (#1D5DEC) |
| Black text | 3.39:1 |
| White text | 6.19:1 |
Values
| HEX | #175ACE |
| RGB | rgb(23, 90, 206) |
| HSL | hsl(218, 80%, 45%) |
| OKLCH | oklch(50.1% 0.191 260.9) |
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 #175ACE | 6.19:1 | AA | Lc -85.3 | Fine for body text |
| Black text on #175ACE | 3.39:1 | AA large text | Lc 23.9 | Dividers and decoration only |
| #175ACE text on white | 6.19:1 | AA | Lc 80.2 | Fine for body text |
| #175ACE text on black | 3.39:1 | AA large text | Lc -21.7 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFC
oklch(93.7% 0.026 259)
-
Step 200
200
#C6DAFC
oklch(88.4% 0.052 261.1)
-
Step 300
300
#9FC2FD
oklch(81% 0.092 260.7)
-
Step 400
400
#6A9FFC
oklch(70.7% 0.148 261)
-
Step 500
500
#4184FA
oklch(63.2% 0.189 260.8)
-
Step 600
600
#2169E9
oklch(55.5% 0.206 261.1)
-
Step 700
700 (this color)
#175ACE
oklch(50.1% 0.191 260.9)
-
Step 800
800
#1348A4
oklch(42.8% 0.159 260.8)
-
Step 900
900
#173D82
oklch(37.6% 0.124 261.1)
-
Step 950
950
#0E254C
oklch(27.1% 0.078 260.3)
#175ACE 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) | #0069D2 | 0.037 |
| Deuteranopia (no green cones) | #0059CC | 0.009 |
| Tritanopia (no blue cones) | #00778B | 0.145 |
| Achromatopsia (no color) | #616161 | 0.192 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175ACE
#175ACE
oklch(50.1% 0.191 260.9)
- #815C00
#815C00
oklch(50.1% 0.103 81.2)
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 #175ACE, closest first.
No curated palette has a color within ΔE 0.04 of #175ACE.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azul #1D5DEC ΔE 0.047
- Warm Blue #4B57DB ΔE 0.050
- Blue Blue #2242C7 ΔE 0.055
- Royal Blue #4169E1 ΔE 0.062
- Mid Blue #276AB3 ΔE 0.065
- Neon Blue #4361EE ΔE 0.066
- Cerulean Blue #056EEE ΔE 0.068
- Bright Blue #0165FC ΔE 0.075
Use #175ACE 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.