#175FA8
Closest named color: Mid Blue (#276AB3). oklch(48.3% 0.135 253.2), rgb(23, 95, 168).
Aa
White text reads best on this color (6.48:1).
About this color
#175FA8 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.135 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.037 away. White text reads best on it, at 6.48:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.23:1 |
| White text | 6.48:1 |
Values
| HEX | #175FA8 |
| RGB | rgb(23, 95, 168) |
| HSL | hsl(210, 76%, 37%) |
| OKLCH | oklch(48.3% 0.135 253.2) |
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 #175FA8 | 6.48:1 | AA | Lc -86.8 | Fine for body text |
| Black text on #175FA8 | 3.23:1 | AA large text | Lc 22.4 | Dividers and decoration only |
| #175FA8 text on white | 6.48:1 | AA | Lc 81.7 | Fine for body text |
| #175FA8 text on black | 3.23:1 | AA large text | Lc -20.2 | 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
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C9DBF1
oklch(88.5% 0.036 253.5)
-
Step 300
300
#A3C4EB
oklch(81% 0.066 252.8)
-
Step 400
400
#71A4E0
oklch(70.7% 0.104 253.2)
-
Step 500
500
#498CD8
oklch(63.1% 0.134 253.2)
-
Step 600
600
#2874C5
oklch(55.5% 0.146 253.2)
-
Step 700
700 (this color)
#175FA8
oklch(48.3% 0.135 253.2)
-
Step 800
800
#19508A
oklch(42.8% 0.112 253)
-
Step 900
900
#1B436E
oklch(37.7% 0.086 252.5)
-
Step 950
950
#112741
oklch(26.9% 0.056 253.9)
#175FA8 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) | #3965AB | 0.033 |
| Deuteranopia (no green cones) | #1D58A7 | 0.019 |
| Tritanopia (no blue cones) | #00717B | 0.102 |
| Achromatopsia (no color) | #5E5E5E | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175FA8
#175FA8
oklch(48.3% 0.135 253.2)
- #815400
#815400
oklch(48.4% 0.103 73.5)
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 #175FA8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.037
- Denim Blue #3B5B92 ΔE 0.042
- Peacock Blue #016795 ΔE 0.043
- Dusk Blue #26538D ΔE 0.050
- Dusky Blue #475F94 ΔE 0.051
- Light Navy Blue #2E5A88 ΔE 0.052
- French Blue #436BAD ΔE 0.054
- Denim #3B638C ΔE 0.055
Use #175FA8 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.