#185B8F
Closest named color: Light Navy Blue (#2E5A88). oklch(45.8% 0.107 247), rgb(24, 91, 143).
Aa
White text reads best on this color (7.16:1).
About this color
#185B8F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.107 and its hue 247°. 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 7.16:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.93:1 |
| White text | 7.16:1 |
Values
| HEX | #185B8F |
| RGB | rgb(24, 91, 143) |
| HSL | hsl(206, 71%, 33%) |
| OKLCH | oklch(45.8% 0.107 247) |
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 #185B8F | 7.16:1 | AAA | Lc -89.4 | Fine for body text |
| Black text on #185B8F | 2.93:1 | Fails | Lc 19.6 | Dividers and decoration only |
| #185B8F text on white | 7.16:1 | AAA | Lc 84.5 | Fine for body text |
| #185B8F text on black | 2.93:1 | Fails | Lc -17.5 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C8DCEF
oklch(88.5% 0.034 246.8)
-
Step 300
300
#A1C5E7
oklch(80.9% 0.062 247.1)
-
Step 400
400
#6BA6DC
oklch(70.6% 0.101 247.3)
-
Step 500
500
#3F8FD2
oklch(63.1% 0.128 247)
-
Step 600
600
#1578BF
oklch(55.6% 0.138 246.9)
-
Step 700
700
#0164A5
oklch(49% 0.129 247.3)
-
Step 800
800 (this color)
#185B8F
oklch(45.8% 0.107 247)
-
Step 900
900
#15446B
oklch(37.6% 0.084 247.6)
-
Step 950
950
#0E283F
oklch(26.9% 0.054 248)
#185B8F 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) | #425D91 | 0.039 |
| Deuteranopia (no green cones) | #31538E | 0.027 |
| Tritanopia (no blue cones) | #00686E | 0.077 |
| Achromatopsia (no color) | #585858 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #185B8F
#185B8F
oklch(45.8% 0.107 247)
- #7C4A00
#7C4A00
oklch(45.7% 0.101 66.8)
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 #185B8F, 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
- Dusk Blue #26538D ΔE 0.023
- Denim Blue #3B5B92 ΔE 0.030
- Deep Sea Blue #015482 ΔE 0.031
- Peacock Blue #016795 ΔE 0.035
- Light Navy #155084 ΔE 0.035
- Denim #3B638C ΔE 0.041
- Dusky Blue #475F94 ΔE 0.048
Use #185B8F 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.