#184278
Closest named color: Twilight Blue (#0A437A). oklch(38.1% 0.103 256.2), rgb(24, 66, 120).
Aa
White text reads best on this color (10.05:1).
About this color
#184278 is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.103 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.008 away. White text reads best on it, at 10.05:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.08:1 |
| White text | 10.05:1 |
Values
| HEX | #184278 |
| RGB | rgb(24, 66, 120) |
| HSL | hsl(214, 67%, 28%) |
| OKLCH | oklch(38.1% 0.103 256.2) |
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 #184278 | 10.05:1 | AAA | Lc -97.1 | Preferred for body text |
| Black text on #184278 | 2.08:1 | Fails | Lc 11.0 | Not readable |
| #184278 text on white | 10.05:1 | AAA | Lc 93.0 | Preferred for body text |
| #184278 text on black | 2.08:1 | Fails | Lc -9.5 | 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 900.
-
Step 50
50
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBF9
oklch(93.6% 0.022 254.4)
-
Step 200
200
#C7DBF6
oklch(88.5% 0.043 255.9)
-
Step 300
300
#A0C3F3
oklch(80.9% 0.078 256.4)
-
Step 400
400
#6CA3ED
oklch(70.8% 0.124 256.2)
-
Step 500
500
#4289E7
oklch(63.1% 0.159 256.4)
-
Step 600
600
#1E71D5
oklch(55.6% 0.172 256.2)
-
Step 700
700
#0F5EB9
oklch(49.2% 0.16 256.3)
-
Step 800
800
#114D95
oklch(42.6% 0.132 256.2)
-
Step 900
900 (this color)
#184278
oklch(38.1% 0.103 256.2)
-
Step 950
950
#0F2646
oklch(26.9% 0.066 257.2)
#184278 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) | #27477A | 0.022 |
| Deuteranopia (no green cones) | #153E77 | 0.013 |
| Tritanopia (no blue cones) | #004F57 | 0.079 |
| Achromatopsia (no color) | #424242 | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #184278
#184278
oklch(38.1% 0.103 256.2)
- #5A3C00
#5A3C00
oklch(38.1% 0.08 77.1)
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 #184278, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.008
- Cobalt #1E488F ΔE 0.042
- Marine Blue #01386A ΔE 0.042
- Light Navy #155084 ΔE 0.043
- Deep Sea Blue #015482 ΔE 0.053
- Dark Grey Blue #29465B ΔE 0.056
- Dusk Blue #26538D ΔE 0.061
- Prussian Blue #1D3557 ΔE 0.064
Use #184278 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.