#175E89
Closest named color: Light Navy Blue (#2E5A88). oklch(46.1% 0.097 241), rgb(23, 94, 137).
Aa
White text reads best on this color (7.00:1).
About this color
#175E89 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.097 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.018 away. White text reads best on it, at 7.00:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.99:1 |
| White text | 7.00:1 |
Values
| HEX | #175E89 |
| RGB | rgb(23, 94, 137) |
| HSL | hsl(203, 71%, 31%) |
| OKLCH | oklch(46.1% 0.097 241) |
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 #175E89 | 7.00:1 | AAA | Lc -88.8 | Fine for body text |
| Black text on #175E89 | 2.99:1 | Fails | Lc 20.2 | Dividers and decoration only |
| #175E89 text on white | 7.00:1 | AAA | Lc 83.9 | Fine for body text |
| #175E89 text on black | 2.99:1 | Fails | Lc -18.1 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF2
oklch(93.5% 0.014 241)
-
Step 200
200
#CBDCE9
oklch(88.6% 0.026 240.7)
-
Step 300
300
#A6C5DD
oklch(80.9% 0.048 241.5)
-
Step 400
400
#76A7CB
oklch(70.7% 0.074 241)
-
Step 500
500
#5091BE
oklch(63.2% 0.095 240.7)
-
Step 600
600
#307AAA
oklch(55.5% 0.104 240.9)
-
Step 700
700 (this color)
#175E89
oklch(46.1% 0.097 241)
-
Step 800
800
#1F5477
oklch(42.8% 0.08 241.3)
-
Step 900
900
#1F4560
oklch(37.6% 0.063 242.1)
-
Step 950
950
#132938
oklch(27% 0.04 240.2)
#175E89 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) | #4A5F8B | 0.048 |
| Deuteranopia (no green cones) | #3A5488 | 0.038 |
| Tritanopia (no blue cones) | #00696D | 0.066 |
| Achromatopsia (no color) | #595959 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175E89
#175E89
oklch(46.1% 0.097 241)
- #7E4A14
#7E4A14
oklch(46.1% 0.096 61.4)
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 #175E89, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.018
- Peacock Blue #016795 ΔE 0.029
- Deep Sea Blue #015482 ΔE 0.034
- Dusk Blue #26538D ΔE 0.035
- Denim #3B638C ΔE 0.035
- Denim Blue #3B5B92 ΔE 0.035
- Light Navy #155084 ΔE 0.042
- YInMn Blue #415A77 ΔE 0.043
Use #175E89 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.