#0171A0
Closest named color: Ocean Blue (#03719C). oklch(51.9% 0.112 236.3), rgb(1, 113, 160).
Aa
White text reads best on this color (5.42:1).
About this color
#0171A0 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.112 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean Blue (#03719C), ΔE 0.006 away. White text reads best on it, at 5.42:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Ocean Blue (#03719C) |
| Black text | 3.87:1 |
| White text | 5.42:1 |
Values
| HEX | #0171A0 |
| RGB | rgb(1, 113, 160) |
| HSL | hsl(198, 99%, 32%) |
| OKLCH | oklch(51.9% 0.112 236.3) |
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 #0171A0 | 5.42:1 | AA | Lc -81.8 | Fine for body text |
| Black text on #0171A0 | 3.87:1 | AA large text | Lc 27.6 | Dividers and decoration only |
| #0171A0 text on white | 5.42:1 | AA | Lc 76.5 | Fine for body text |
| #0171A0 text on black | 3.87:1 | AA large text | Lc -25.3 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1ECF3
oklch(93.7% 0.015 235.4)
-
Step 200
200
#C7DDEB
oklch(88.6% 0.03 235.7)
-
Step 300
300
#A0C7DF
oklch(81% 0.054 235.3)
-
Step 400
400
#69A9D0
oklch(70.7% 0.087 236.6)
-
Step 500
500
#3A93C3
oklch(63.1% 0.11 236)
-
Step 600
600
#007CB0
oklch(55.5% 0.121 236.7)
-
Step 700
700 (this color)
#0171A0
oklch(51.9% 0.112 236.3)
-
Step 800
800
#00557A
oklch(42.5% 0.092 236.4)
-
Step 900
900
#114763
oklch(37.8% 0.072 236.5)
-
Step 950
950
#0C2A3A
oklch(27.1% 0.046 235.5)
#0171A0 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) | #5A71A2 | 0.064 |
| Deuteranopia (no green cones) | #46649F | 0.051 |
| Tritanopia (no blue cones) | #007D81 | 0.070 |
| Achromatopsia (no color) | #6A6A6A | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0171A0
#0171A0
oklch(51.9% 0.112 236.3)
- #98551C
#98551C
oklch(51.9% 0.112 56.2)
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 #0171A0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean Blue #03719C ΔE 0.006
- Sea Blue #047495 ΔE 0.022
- Muted Blue #3B719F ΔE 0.029
- Peacock Blue #016795 ΔE 0.032
- Nice Blue #107AB0 ΔE 0.034
- Flat Blue #3C73A8 ΔE 0.035
- Mid Blue #276AB3 ΔE 0.042
- Ocean #017B92 ΔE 0.042
Use #0171A0 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.