#243746
Closest named color: Dark Blue Grey (#1F3B4D). oklch(32.7% 0.036 243), rgb(36, 55, 70).
Aa
White text reads best on this color (12.28:1).
About this color
#243746 is a dark, muted blue. In OKLCH its lightness is 33%, its chroma 0.036 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.016 away. White text reads best on it, at 12.28:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.70:1 |
| White text | 12.28:1 |
Values
| HEX | #243746 |
| RGB | rgb(36, 55, 70) |
| HSL | hsl(206, 32%, 21%) |
| OKLCH | oklch(32.7% 0.036 243) |
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 #243746 | 12.28:1 | AAA | Lc -101.4 | Preferred for body text |
| Black text on #243746 | 1.70:1 | Fails | Lc 0.0 | Not readable |
| #243746 text on white | 12.28:1 | AAA | Lc 98.0 | Preferred for body text |
| #243746 text on black | 1.70:1 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#D1DBE3
oklch(88.6% 0.015 241.8)
-
Step 300
300
#B2C3D1
oklch(80.9% 0.027 242.8)
-
Step 400
400
#8AA4BA
oklch(70.6% 0.043 244)
-
Step 500
500
#6C8EA9
oklch(63.1% 0.056 242.7)
-
Step 600
600
#547894
oklch(55.7% 0.06 242.5)
-
Step 700
700
#44657E
oklch(49.2% 0.056 241.9)
-
Step 800
800
#385267
oklch(42.7% 0.047 243.5)
-
Step 900
900 (this color)
#243746
oklch(32.7% 0.036 243)
-
Step 950
950
#1D2831
oklch(27.1% 0.023 243.4)
#243746 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) | #313747 | 0.019 |
| Deuteranopia (no green cones) | #2C3346 | 0.017 |
| Tritanopia (no blue cones) | #163B3C | 0.031 |
| Achromatopsia (no color) | #353535 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #243746
#243746
oklch(32.7% 0.036 243)
- #423121
#423121
oklch(32.8% 0.036 64.3)
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 #243746, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.016
- Gunmetal #293241 ΔE 0.017
- Midnight Green #073B4C ΔE 0.026
- Onyx #343A40 ΔE 0.029
- Space Cadet #2B2D42 ΔE 0.032
- Prussian Blue #1D3557 ΔE 0.034
- Charcoal #264653 ΔE 0.050
- Charcoal Grey #3C4142 ΔE 0.053
Use #243746 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.