#175CD1
Closest named color: Azul (#1D5DEC). oklch(50.8% 0.193 260.7), rgb(23, 92, 209).
Aa
White text reads best on this color (6.02:1).
About this color
#175CD1 is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.193 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Azul (#1D5DEC), ΔE 0.042 away. White text reads best on it, at 6.02:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.193) |
| Temperature | cool |
| Nearest name | Azul (#1D5DEC) |
| Black text | 3.48:1 |
| White text | 6.02:1 |
Values
| HEX | #175CD1 |
| RGB | rgb(23, 92, 209) |
| HSL | hsl(218, 80%, 45%) |
| OKLCH | oklch(50.8% 0.193 260.7) |
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 #175CD1 | 6.02:1 | AA | Lc -84.6 | Fine for body text |
| Black text on #175CD1 | 3.48:1 | AA large text | Lc 24.7 | Dividers and decoration only |
| #175CD1 text on white | 6.02:1 | AA | Lc 79.4 | Fine for body text |
| #175CD1 text on black | 3.48:1 | AA large text | Lc -22.5 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFD
oklch(93.7% 0.027 260.3)
-
Step 200
200
#C6DAFC
oklch(88.4% 0.052 261.1)
-
Step 300
300
#9EC2FD
oklch(80.9% 0.093 260.1)
-
Step 400
400
#699FFD
oklch(70.7% 0.15 260.8)
-
Step 500
500
#4084FB
oklch(63.2% 0.191 260.7)
-
Step 600
600
#1E69EA
oklch(55.5% 0.208 260.8)
-
Step 700
700 (this color)
#175CD1
oklch(50.8% 0.193 260.7)
-
Step 800
800
#1248A4
oklch(42.7% 0.159 260.7)
-
Step 900
900
#163D82
oklch(37.6% 0.125 260.9)
-
Step 950
950
#0E254C
oklch(27.1% 0.078 260.3)
#175CD1 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) | #006BD5 | 0.037 |
| Deuteranopia (no green cones) | #005BCF | 0.009 |
| Tritanopia (no blue cones) | #007A8D | 0.149 |
| Achromatopsia (no color) | #636363 | 0.193 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175CD1
#175CD1
oklch(50.8% 0.193 260.7)
- #845E00
#845E00
oklch(50.8% 0.105 81)
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 #175CD1, closest first.
No curated palette has a color within ΔE 0.04 of #175CD1.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azul #1D5DEC ΔE 0.042
- Warm Blue #4B57DB ΔE 0.048
- Royal Blue #4169E1 ΔE 0.056
- Neon Blue #4361EE ΔE 0.060
- Cerulean Blue #056EEE ΔE 0.061
- Blue Blue #2242C7 ΔE 0.061
- Mid Blue #276AB3 ΔE 0.064
- Bright Blue #0165FC ΔE 0.069
Use #175CD1 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.