#18445C
Closest named color: Dark Grey Blue (#29465B). oklch(36.8% 0.063 236.1), rgb(24, 68, 92).
Aa
White text reads best on this color (10.39:1).
About this color
#18445C is a dark, muted blue. In OKLCH its lightness is 37%, its chroma 0.063 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.019 away. White text reads best on it, at 10.39:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.02:1 |
| White text | 10.39:1 |
Values
| HEX | #18445C |
| RGB | rgb(24, 68, 92) |
| HSL | hsl(201, 59%, 23%) |
| OKLCH | oklch(36.8% 0.063 236.1) |
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 #18445C | 10.39:1 | AAA | Lc -97.9 | Preferred for body text |
| Black text on #18445C | 2.02:1 | Fails | Lc 10.0 | Not readable |
| #18445C text on white | 10.39:1 | AAA | Lc 93.9 | Preferred for body text |
| #18445C text on black | 2.02:1 | Fails | Lc -8.6 | 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
#E2EBF2
oklch(93.5% 0.014 241)
-
Step 200
200
#C9DCE8
oklch(88.4% 0.026 235.4)
-
Step 300
300
#A4C6DC
oklch(80.9% 0.048 236.6)
-
Step 400
400
#71A8CA
oklch(70.6% 0.076 236.5)
-
Step 500
500
#4992BC
oklch(63.1% 0.096 236.3)
-
Step 600
600
#257CA8
oklch(55.6% 0.105 235.7)
-
Step 700
700
#166890
oklch(49% 0.097 236)
-
Step 800
800
#165575
oklch(42.7% 0.081 235.9)
-
Step 900
900 (this color)
#18445C
oklch(36.8% 0.063 236.1)
-
Step 950
950
#112937
oklch(26.9% 0.04 236.4)
#18445C 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) | #39445D | 0.038 |
| Deuteranopia (no green cones) | #2F3D5C | 0.031 |
| Tritanopia (no blue cones) | #004A4C | 0.041 |
| Achromatopsia (no color) | #404040 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18445C
#18445C
oklch(36.8% 0.063 236.1)
- #58361C
#58361C
oklch(36.8% 0.062 56.6)
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 #18445C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.019
- Charcoal #264653 ΔE 0.023
- Dark Blue Grey #1F3B4D ΔE 0.034
- Midnight Green #073B4C ΔE 0.041
- Dark Teal #014D4E ΔE 0.045
- Prussian Blue #1D3557 ΔE 0.047
- Twilight Blue #0A437A ΔE 0.053
- Marine Blue #01386A ΔE 0.053
Use #18445C 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.