#175477
Closest named color: Deep Sea Blue (#015482). oklch(42.5% 0.084 238.9), rgb(23, 84, 119).
Aa
White text reads best on this color (8.16:1).
About this color
#175477 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.084 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.020 away. White text reads best on it, at 8.16:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.57:1 |
| White text | 8.16:1 |
Values
| HEX | #175477 |
| RGB | rgb(23, 84, 119) |
| HSL | hsl(202, 68%, 28%) |
| OKLCH | oklch(42.5% 0.084 238.9) |
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 #175477 | 8.16:1 | AAA | Lc -92.6 | Preferred for body text |
| Black text on #175477 | 2.57:1 | Fails | Lc 16.1 | Dividers and decoration only |
| #175477 text on white | 8.16:1 | AAA | Lc 87.9 | Fine for body text |
| #175477 text on black | 2.57:1 | Fails | Lc -14.2 | Not readable |
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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF2
oklch(93.5% 0.014 241)
-
Step 200
200
#CADCE9
oklch(88.5% 0.026 239.1)
-
Step 300
300
#A4C6DD
oklch(80.9% 0.049 237.8)
-
Step 400
400
#72A8CC
oklch(70.7% 0.078 238.5)
-
Step 500
500
#4991BF
oklch(63% 0.1 239.1)
-
Step 600
600
#277BAC
oklch(55.6% 0.109 239.2)
-
Step 700
700
#186793
oklch(49% 0.101 239.2)
-
Step 800
800 (this color)
#175477
oklch(42.5% 0.084 238.9)
-
Step 900
900
#1B4660
oklch(37.7% 0.065 238.5)
-
Step 950
950
#112938
oklch(26.9% 0.041 238.3)
#175477 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) | #435479 | 0.044 |
| Deuteranopia (no green cones) | #364B76 | 0.036 |
| Tritanopia (no blue cones) | #005D60 | 0.056 |
| Achromatopsia (no color) | #4F4F4F | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #175477
#175477
oklch(42.5% 0.084 238.9)
- #704219
#704219
oklch(42.6% 0.084 58.9)
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 #175477, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.020
- Light Navy #155084 ΔE 0.027
- Light Navy Blue #2E5A88 ΔE 0.039
- Dusk Blue #26538D ΔE 0.040
- Petrol #005F6A ΔE 0.047
- YInMn Blue #415A77 ΔE 0.047
- Deep Teal #00555A ΔE 0.053
- Dark Grey Blue #29465B ΔE 0.056
Use #175477 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.