#184E72
Closest named color: Deep Sea Blue (#015482). oklch(40.7% 0.082 242.3), rgb(24, 78, 114).
Aa
White text reads best on this color (8.85:1).
About this color
#184E72 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.082 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.029 away. White text reads best on it, at 8.85:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.37:1 |
| White text | 8.85:1 |
Values
| HEX | #184E72 |
| RGB | rgb(24, 78, 114) |
| HSL | hsl(204, 65%, 27%) |
| OKLCH | oklch(40.7% 0.082 242.3) |
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 #184E72 | 8.85:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #184E72 | 2.37:1 | Fails | Lc 14.0 | Not readable |
| #184E72 text on white | 8.85:1 | AAA | Lc 90.0 | Fine for body text |
| #184E72 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#CBDCEA
oklch(88.6% 0.027 242.8)
-
Step 300
300
#A6C5DE
oklch(80.9% 0.049 242.6)
-
Step 400
400
#75A7CD
oklch(70.7% 0.077 241.9)
-
Step 500
500
#4F90C0
oklch(63% 0.099 242.5)
-
Step 600
600
#307AAC
oklch(55.7% 0.106 242)
-
Step 700
700
#226694
oklch(49% 0.099 242.7)
-
Step 800
800 (this color)
#184E72
oklch(40.7% 0.082 242.3)
-
Step 900
900
#1F4561
oklch(37.6% 0.065 243)
-
Step 950
950
#132939
oklch(27.1% 0.041 242)
#184E72 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) | #3D4F74 | 0.039 |
| Deuteranopia (no green cones) | #314671 | 0.031 |
| Tritanopia (no blue cones) | #00575B | 0.056 |
| Achromatopsia (no color) | #4A4A4A | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #184E72
#184E72
oklch(40.7% 0.082 242.3)
- #693E12
#693E12
oklch(40.7% 0.082 61.7)
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 #184E72, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.029
- Light Navy #155084 ΔE 0.030
- Twilight Blue #0A437A ΔE 0.041
- Dark Grey Blue #29465B ΔE 0.041
- Dusk Blue #26538D ΔE 0.048
- Charcoal #264653 ΔE 0.053
- Light Navy Blue #2E5A88 ΔE 0.054
- Deep Teal #00555A ΔE 0.054
Use #184E72 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.