#185583
Closest named color: Deep Sea Blue (#015482). oklch(43.5% 0.097 245.9), rgb(24, 85, 131).
Aa
White text reads best on this color (7.87:1).
About this color
#185583 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.097 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.011 away. White text reads best on it, at 7.87:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.66:1 |
| White text | 7.87:1 |
Values
| HEX | #185583 |
| RGB | rgb(24, 85, 131) |
| HSL | hsl(206, 69%, 30%) |
| OKLCH | oklch(43.5% 0.097 245.9) |
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 #185583 | 7.87:1 | AAA | Lc -91.7 | Preferred for body text |
| Black text on #185583 | 2.66:1 | Fails | Lc 17.0 | Dividers and decoration only |
| #185583 text on white | 7.87:1 | AAA | Lc 87.0 | Fine for body text |
| #185583 text on black | 2.66:1 | Fails | Lc -15.1 | 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 800.
-
Step 50
50
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF4
oklch(93.5% 0.016 245.1)
-
Step 200
200
#C9DCED
oklch(88.6% 0.031 245.1)
-
Step 300
300
#A3C5E4
oklch(80.9% 0.057 246.1)
-
Step 400
400
#70A6D6
oklch(70.6% 0.091 246.3)
-
Step 500
500
#478FCB
oklch(63% 0.116 246.2)
-
Step 600
600
#2378B8
oklch(55.5% 0.127 246.2)
-
Step 700
700
#14659F
oklch(49.1% 0.118 246.2)
-
Step 800
800 (this color)
#185583
oklch(43.5% 0.097 245.9)
-
Step 900
900
#1A4567
oklch(37.8% 0.075 245.6)
-
Step 950
950
#10283C
oklch(26.8% 0.048 246)
#185583 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) | #405785 | 0.040 |
| Deuteranopia (no green cones) | #304D82 | 0.028 |
| Tritanopia (no blue cones) | #006066 | 0.068 |
| Achromatopsia (no color) | #515151 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #185583
#185583
oklch(43.5% 0.097 245.9)
- #744400
#744400
oklch(43.4% 0.097 65.9)
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 #185583, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.011
- Light Navy #155084 ΔE 0.016
- Dusk Blue #26538D ΔE 0.022
- Light Navy Blue #2E5A88 ΔE 0.026
- Denim Blue #3B5B92 ΔE 0.046
- Cobalt #1E488F ΔE 0.046
- YInMn Blue #415A77 ΔE 0.048
- Peacock Blue #016795 ΔE 0.055
Use #185583 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.