#184D78
Closest named color: Light Navy (#155084). oklch(40.8% 0.091 247.2), rgb(24, 77, 120).
Aa
White text reads best on this color (8.85:1).
About this color
#184D78 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.091 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.020 away. White text reads best on it, at 8.85:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.37:1 |
| White text | 8.85:1 |
Values
| HEX | #184D78 |
| RGB | rgb(24, 77, 120) |
| HSL | hsl(207, 67%, 28%) |
| OKLCH | oklch(40.8% 0.091 247.2) |
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 #184D78 | 8.85:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #184D78 | 2.37:1 | Fails | Lc 14.0 | Not readable |
| #184D78 text on white | 8.85:1 | AAA | Lc 89.9 | Fine for body text |
| #184D78 text on black | 2.37:1 | Fails | Lc -12.3 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF4
oklch(93.6% 0.016 248)
-
Step 200
200
#CADBEC
oklch(88.4% 0.03 248.2)
-
Step 300
300
#A6C4E2
oklch(80.8% 0.054 248.5)
-
Step 400
400
#75A6D3
oklch(70.8% 0.084 247)
-
Step 500
500
#4F8FC7
oklch(63.1% 0.108 246.9)
-
Step 600
600
#3078B4
oklch(55.6% 0.117 247.2)
-
Step 700
700
#21659B
oklch(49.2% 0.109 246.8)
-
Step 800
800 (this color)
#184D78
oklch(40.8% 0.091 247.2)
-
Step 900
900
#1F4465
oklch(37.6% 0.071 247.8)
-
Step 950
950
#13283B
oklch(26.9% 0.045 247.5)
#184D78 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) | #394F7A | 0.035 |
| Deuteranopia (no green cones) | #2B4677 | 0.024 |
| Tritanopia (no blue cones) | #00575D | 0.064 |
| Achromatopsia (no color) | #4A4A4A | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #184D78
#184D78
oklch(40.8% 0.091 247.2)
- #6A3F00
#6A3F00
oklch(41% 0.09 67.4)
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 #184D78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.020
- Deep Sea Blue #015482 ΔE 0.024
- Twilight Blue #0A437A ΔE 0.034
- Dusk Blue #26538D ΔE 0.040
- Cobalt #1E488F ΔE 0.044
- Dark Grey Blue #29465B ΔE 0.049
- Light Navy Blue #2E5A88 ΔE 0.051
- Charcoal #264653 ΔE 0.062
Use #184D78 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.