#184478
Closest named color: Twilight Blue (#0A437A). oklch(38.6% 0.101 254.8), rgb(24, 68, 120).
Aa
White text reads best on this color (9.82:1).
About this color
#184478 is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.101 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.010 away. White text reads best on it, at 9.82:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.13:1 |
| White text | 9.82:1 |
Values
| HEX | #184478 |
| RGB | rgb(24, 68, 120) |
| HSL | hsl(213, 67%, 28%) |
| OKLCH | oklch(38.6% 0.101 254.8) |
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 #184478 | 9.82:1 | AAA | Lc -96.7 | Preferred for body text |
| Black text on #184478 | 2.13:1 | Fails | Lc 11.5 | Not readable |
| #184478 text on white | 9.82:1 | AAA | Lc 92.5 | Preferred for body text |
| #184478 text on black | 2.13:1 | Fails | Lc -10.0 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF9
oklch(93.6% 0.022 254.4)
-
Step 200
200
#C7DBF5
oklch(88.5% 0.042 255)
-
Step 300
300
#A0C4F1
oklch(81% 0.075 254.2)
-
Step 400
400
#6BA3EA
oklch(70.6% 0.12 254.9)
-
Step 500
500
#408AE4
oklch(63% 0.155 255)
-
Step 600
600
#1972D2
oklch(55.6% 0.168 254.8)
-
Step 700
700
#085FB6
oklch(49.1% 0.156 254.8)
-
Step 800
800
#0E4E93
oklch(42.7% 0.129 254.7)
-
Step 900
900 (this color)
#184478
oklch(38.6% 0.101 254.8)
-
Step 950
950
#0E2745
oklch(27.1% 0.064 254.6)
#184478 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) | #2B487A | 0.024 |
| Deuteranopia (no green cones) | #1A3F77 | 0.015 |
| Tritanopia (no blue cones) | #005058 | 0.076 |
| Achromatopsia (no color) | #434343 | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #184478
#184478
oklch(38.6% 0.101 254.8)
- #5D3C00
#5D3C00
oklch(38.5% 0.082 74.3)
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 #184478, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.010
- Light Navy #155084 ΔE 0.038
- Cobalt #1E488F ΔE 0.040
- Marine Blue #01386A ΔE 0.046
- Deep Sea Blue #015482 ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.053
- Dusk Blue #26538D ΔE 0.056
- Charcoal #264653 ΔE 0.067
Use #184478 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.