#175DA2
Closest named color: Denim Blue (#3B5B92). oklch(47.4% 0.13 252.5), rgb(23, 93, 162).
Aa
White text reads best on this color (6.72:1).
About this color
#175DA2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.130 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.036 away. White text reads best on it, at 6.72:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.12:1 |
| White text | 6.72:1 |
Values
| HEX | #175DA2 |
| RGB | rgb(23, 93, 162) |
| HSL | hsl(210, 75%, 36%) |
| OKLCH | oklch(47.4% 0.13 252.5) |
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 #175DA2 | 6.72:1 | AA | Lc -87.7 | Fine for body text |
| Black text on #175DA2 | 3.12:1 | AA large text | Lc 21.4 | Dividers and decoration only |
| #175DA2 text on white | 6.72:1 | AA | Lc 82.7 | Fine for body text |
| #175DA2 text on black | 3.12:1 | AA large text | Lc -19.2 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF6
oklch(93.7% 0.018 253.3)
-
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
#72A4DE
oklch(70.7% 0.101 252.8)
-
Step 500
500
#4B8CD4
oklch(63% 0.128 252.6)
-
Step 600
600
#2B75C2
oklch(55.6% 0.14 252.5)
-
Step 700
700 (this color)
#175DA2
oklch(47.4% 0.13 252.5)
-
Step 800
800
#1B5088
oklch(42.7% 0.108 252.9)
-
Step 900
900
#1D436C
oklch(37.7% 0.083 252.4)
-
Step 950
950
#12273F
oklch(26.9% 0.053 253.1)
#175DA2 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) | #3A62A5 | 0.033 |
| Deuteranopia (no green cones) | #2156A1 | 0.019 |
| Tritanopia (no blue cones) | #006E77 | 0.097 |
| Achromatopsia (no color) | #5C5C5C | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175DA2
#175DA2
oklch(47.4% 0.13 252.5)
- #7E5100
#7E5100
oklch(47.4% 0.101 72.5)
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 #175DA2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.036
- Peacock Blue #016795 ΔE 0.040
- Dusk Blue #26538D ΔE 0.040
- Light Navy Blue #2E5A88 ΔE 0.043
- Mid Blue #276AB3 ΔE 0.046
- Dusky Blue #475F94 ΔE 0.048
- Denim #3B638C ΔE 0.051
- Deep Sea Blue #015482 ΔE 0.058
Use #175DA2 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.