#183646
Closest named color: Midnight Green (#073B4C). oklch(31.8% 0.046 234.1), rgb(24, 54, 70).
Aa
White text reads best on this color (12.68:1).
About this color
#183646 is a dark, muted blue. In OKLCH its lightness is 32%, its chroma 0.046 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.019 away. White text reads best on it, at 12.68:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.65:1 |
| White text | 12.68:1 |
Values
| HEX | #183646 |
| RGB | rgb(24, 54, 70) |
| HSL | hsl(201, 49%, 18%) |
| OKLCH | oklch(31.8% 0.046 234.1) |
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 #183646 | 12.68:1 | AAA | Lc -102.0 | Preferred for body text |
| Black text on #183646 | 1.65:1 | Fails | Lc 0.0 | Not readable |
| #183646 text on white | 12.68:1 | AAA | Lc 98.6 | Preferred for body text |
| #183646 text on black | 1.65:1 | 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 950.
-
Step 50
50
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E0ECF3
oklch(93.6% 0.016 233)
-
Step 200
200
#C7DDEA
oklch(88.5% 0.03 233.6)
-
Step 300
300
#9FC7DF
oklch(80.9% 0.054 234.7)
-
Step 400
400
#67AACF
oklch(70.8% 0.087 234)
-
Step 500
500
#3694C2
oklch(63.2% 0.111 233.9)
-
Step 600
600
#007DAD
oklch(55.6% 0.117 234.3)
-
Step 700
700
#006992
oklch(49.1% 0.103 234.3)
-
Step 800
800
#005678
oklch(42.7% 0.089 233.9)
-
Step 900
900
#0D4762
oklch(37.6% 0.073 234.5)
-
Step 950
950 (this color)
#183646
oklch(31.8% 0.046 234.1)
#183646 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) | #2E3547 | 0.029 |
| Deuteranopia (no green cones) | #283146 | 0.025 |
| Tritanopia (no blue cones) | #003A3B | 0.033 |
| Achromatopsia (no color) | #333333 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #183646
#183646
oklch(31.8% 0.046 234.1)
- #442C1B
#442C1B
oklch(31.8% 0.045 55.6)
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 #183646, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.019
- Dark Blue Grey #1F3B4D ΔE 0.021
- Gunmetal #293241 ΔE 0.023
- Prussian Blue #1D3557 ΔE 0.033
- Space Cadet #2B2D42 ΔE 0.036
- Onyx #343A40 ΔE 0.043
- Oxford Blue #1B263B ΔE 0.053
- Charcoal #264653 ΔE 0.058
Use #183646 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.