#18384E
Closest named color: Dark Blue Grey (#1F3B4D). oklch(32.8% 0.054 241.2), rgb(24, 56, 78).
Aa
White text reads best on this color (12.24:1).
About this color
#18384E is a dark, muted blue. In OKLCH its lightness is 33%, its chroma 0.054 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.014 away. White text reads best on it, at 12.24:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.71:1 |
| White text | 12.24:1 |
Values
| HEX | #18384E |
| RGB | rgb(24, 56, 78) |
| HSL | hsl(204, 53%, 20%) |
| OKLCH | oklch(32.8% 0.054 241.2) |
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 #18384E | 12.24:1 | AAA | Lc -101.3 | Preferred for body text |
| Black text on #18384E | 1.71:1 | Fails | Lc 0.0 | Not readable |
| #18384E text on white | 12.24:1 | AAA | Lc 97.8 | Preferred for body text |
| #18384E text on black | 1.71:1 | Fails | Lc 0.0 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CDDBE7
oklch(88.4% 0.022 243.8)
-
Step 300
300
#AAC5D9
oklch(81% 0.041 240.1)
-
Step 400
400
#7CA6C6
oklch(70.6% 0.065 241.7)
-
Step 500
500
#5990B7
oklch(63.1% 0.083 240.7)
-
Step 600
600
#3D7AA3
oklch(55.7% 0.09 240.4)
-
Step 700
700
#2F668C
oklch(49.1% 0.084 241.5)
-
Step 800
800
#285372
oklch(42.6% 0.07 242.3)
-
Step 900
900 (this color)
#18384E
oklch(32.8% 0.054 241.2)
-
Step 950
950
#162936
oklch(27.1% 0.035 239.7)
#18384E 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) | #2E384F | 0.028 |
| Deuteranopia (no green cones) | #27334E | 0.023 |
| Tritanopia (no blue cones) | #003D40 | 0.038 |
| Achromatopsia (no color) | #353535 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18384E
#18384E
oklch(32.8% 0.054 241.2)
- #492E15
#492E15
oklch(32.8% 0.055 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 #18384E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.014
- Midnight Green #073B4C ΔE 0.016
- Prussian Blue #1D3557 ΔE 0.022
- Gunmetal #293241 ΔE 0.031
- Space Cadet #2B2D42 ΔE 0.041
- Onyx #343A40 ΔE 0.045
- Charcoal #264653 ΔE 0.051
- Marine Blue #01386A ΔE 0.051
Use #18384E 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.