#175FA4
Closest named color: Peacock Blue (#016795). oklch(48.1% 0.13 252), rgb(23, 95, 164).
Aa
White text reads best on this color (6.54:1).
About this color
#175FA4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.130 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Peacock Blue (#016795), ΔE 0.037 away. White text reads best on it, at 6.54:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.20:1 |
| White text | 6.54:1 |
Values
| HEX | #175FA4 |
| RGB | rgb(23, 95, 164) |
| HSL | hsl(209, 75%, 37%) |
| OKLCH | oklch(48.1% 0.13 252) |
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 #175FA4 | 6.54:1 | AA | Lc -87.0 | Fine for body text |
| Black text on #175FA4 | 3.20:1 | AA large text | Lc 22.1 | Dividers and decoration only |
| #175FA4 text on white | 6.54:1 | AA | Lc 81.9 | Fine for body text |
| #175FA4 text on black | 3.20:1 | AA large text | Lc -20.0 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C9DBF0
oklch(88.4% 0.035 252.3)
-
Step 300
300
#A4C4E9
oklch(80.9% 0.063 252.3)
-
Step 400
400
#71A4DE
oklch(70.6% 0.101 252.4)
-
Step 500
500
#4A8DD5
oklch(63.2% 0.129 252)
-
Step 600
600
#2975C2
oklch(55.5% 0.14 252.2)
-
Step 700
700 (this color)
#175FA4
oklch(48.1% 0.13 252)
-
Step 800
800
#195088
oklch(42.6% 0.109 252.3)
-
Step 900
900
#1C436C
oklch(37.7% 0.083 251.9)
-
Step 950
950
#112840
oklch(27.1% 0.054 251.3)
#175FA4 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) | #3C64A7 | 0.035 |
| Deuteranopia (no green cones) | #2358A3 | 0.019 |
| Tritanopia (no blue cones) | #007079 | 0.097 |
| Achromatopsia (no color) | #5D5D5D | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175FA4
#175FA4
oklch(48.1% 0.13 252)
- #815200
#815200
oklch(48% 0.103 71.5)
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 #175FA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.037
- Denim Blue #3B5B92 ΔE 0.038
- Mid Blue #276AB3 ΔE 0.040
- Light Navy Blue #2E5A88 ΔE 0.046
- Dusk Blue #26538D ΔE 0.046
- Dusky Blue #475F94 ΔE 0.048
- Denim #3B638C ΔE 0.050
- French Blue #436BAD ΔE 0.055
Use #175FA4 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.