#175C7A
Closest named color: Light Navy Blue (#2E5A88). oklch(44.8% 0.082 232), rgb(23, 92, 122).
Aa
White text reads best on this color (7.37:1).
About this color
#175C7A is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.082 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.032 away. White text reads best on it, at 7.37:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.84:1 |
| White text | 7.37:1 |
Values
| HEX | #175C7A |
| RGB | rgb(23, 92, 122) |
| HSL | hsl(198, 68%, 28%) |
| OKLCH | oklch(44.8% 0.082 232) |
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 #175C7A | 7.37:1 | AAA | Lc -90.2 | Preferred for body text |
| Black text on #175C7A | 2.84:1 | Fails | Lc 18.7 | Dividers and decoration only |
| #175C7A text on white | 7.37:1 | AAA | Lc 85.3 | Fine for body text |
| #175C7A text on black | 2.84:1 | Fails | Lc -16.7 | 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 800.
-
Step 50
50
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C9DDE8
oklch(88.6% 0.026 231.7)
-
Step 300
300
#A3C7DB
oklch(81% 0.048 232.5)
-
Step 400
400
#6EA9C8
oklch(70.6% 0.076 232.3)
-
Step 500
500
#4394BA
oklch(63.2% 0.097 231.5)
-
Step 600
600
#197DA6
oklch(55.5% 0.106 231.9)
-
Step 700
700
#05698F
oklch(49% 0.099 232.6)
-
Step 800
800 (this color)
#175C7A
oklch(44.8% 0.082 232)
-
Step 900
900
#17475D
oklch(37.6% 0.063 231.9)
-
Step 950
950
#0F2A37
oklch(27.1% 0.041 231.9)
#175C7A 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) | #4D5B7B | 0.054 |
| Deuteranopia (no green cones) | #40527A | 0.045 |
| Tritanopia (no blue cones) | #006466 | 0.049 |
| Achromatopsia (no color) | #565656 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175C7A
#175C7A
oklch(44.8% 0.082 232)
- #784727
#784727
oklch(44.9% 0.081 52.4)
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 #175C7A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.032
- Petrol #005F6A ΔE 0.033
- Deep Sea Blue #015482 ΔE 0.033
- YInMn Blue #415A77 ΔE 0.037
- Light Navy #155084 ΔE 0.044
- Dusk Blue #26538D ΔE 0.047
- Denim #3B638C ΔE 0.048
- Peacock Blue #016795 ΔE 0.049
Use #175C7A 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.