#185571
Closest named color: Deep Sea Blue (#015482). oklch(42.5% 0.076 232.8), rgb(24, 85, 113).
Aa
White text reads best on this color (8.14:1).
About this color
#185571 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.076 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.030 away. White text reads best on it, at 8.14:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.57:1 |
| White text | 8.14:1 |
Values
| HEX | #185571 |
| RGB | rgb(24, 85, 113) |
| HSL | hsl(199, 65%, 27%) |
| OKLCH | oklch(42.5% 0.076 232.8) |
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 #185571 | 8.14:1 | AAA | Lc -92.6 | Preferred for body text |
| Black text on #185571 | 2.57:1 | Fails | Lc 16.1 | Dividers and decoration only |
| #185571 text on white | 8.14:1 | AAA | Lc 87.9 | Fine for body text |
| #185571 text on black | 2.57:1 | Fails | Lc -14.3 | 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
#E2ECF1
oklch(93.7% 0.013 228.9)
-
Step 200
200
#CADCE7
oklch(88.4% 0.025 234.5)
-
Step 300
300
#A5C6D9
oklch(80.9% 0.044 233.3)
-
Step 400
400
#73A9C6
oklch(70.8% 0.071 232.6)
-
Step 500
500
#4B93B7
oklch(63.1% 0.09 232.4)
-
Step 600
600
#287DA3
oklch(55.7% 0.098 232)
-
Step 700
700
#19698C
oklch(49.1% 0.092 232.6)
-
Step 800
800 (this color)
#185571
oklch(42.5% 0.076 232.8)
-
Step 900
900
#1C475C
oklch(37.8% 0.059 232.6)
-
Step 950
950
#122A36
oklch(27.2% 0.037 232.2)
#185571 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) | #475472 | 0.049 |
| Deuteranopia (no green cones) | #3B4C71 | 0.041 |
| Tritanopia (no blue cones) | #005C5E | 0.046 |
| Achromatopsia (no color) | #4F4F4F | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #185571
#185571
oklch(42.5% 0.076 232.8)
- #6F4224
#6F4224
oklch(42.6% 0.076 52.9)
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 #185571, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.030
- Petrol #005F6A ΔE 0.038
- Light Navy #155084 ΔE 0.039
- Deep Teal #00555A ΔE 0.043
- Light Navy Blue #2E5A88 ΔE 0.045
- YInMn Blue #415A77 ΔE 0.046
- Dusk Blue #26538D ΔE 0.051
- Dark Grey Blue #29465B ΔE 0.052
Use #185571 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.