#2F506B
Closest named color: Dark Grey Blue (#29465B). oklch(41.8% 0.06 244.6), rgb(47, 80, 107).
Aa
White text reads best on this color (8.46:1).
About this color
#2F506B is a dark, muted blue. In OKLCH its lightness is 42%, its chroma 0.060 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.039 away. White text reads best on it, at 8.46:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.48:1 |
| White text | 8.46:1 |
Values
| HEX | #2F506B |
| RGB | rgb(47, 80, 107) |
| HSL | hsl(207, 39%, 30%) |
| OKLCH | oklch(41.8% 0.06 244.6) |
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 #2F506B | 8.46:1 | AAA | Lc -93.6 | Preferred for body text |
| Black text on #2F506B | 2.48:1 | Fails | Lc 14.9 | Not readable |
| #2F506B text on white | 8.46:1 | AAA | Lc 89.0 | Fine for body text |
| #2F506B text on black | 2.48:1 | Fails | Lc -13.2 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CFDBE5
oklch(88.5% 0.019 243)
-
Step 300
300
#AEC4D6
oklch(80.9% 0.035 242.8)
-
Step 400
400
#84A5C2
oklch(70.8% 0.056 245.2)
-
Step 500
500
#648EB2
oklch(63% 0.072 245.1)
-
Step 600
600
#4A789E
oklch(55.6% 0.078 244.8)
-
Step 700
700
#3B6587
oklch(49.1% 0.072 244.5)
-
Step 800
800 (this color)
#2F506B
oklch(41.8% 0.06 244.6)
-
Step 900
900
#2C4459
oklch(37.6% 0.047 245.9)
-
Step 950
950
#1A2834
oklch(27% 0.03 245.1)
#2F506B 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) | #44506C | 0.027 |
| Deuteranopia (no green cones) | #3D4A6A | 0.024 |
| Tritanopia (no blue cones) | #0B5659 | 0.049 |
| Achromatopsia (no color) | #4D4D4D | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F506B
#2F506B
oklch(41.8% 0.06 244.6)
- #634628
#634628
oklch(41.9% 0.06 65.9)
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 #2F506B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.039
- YInMn Blue #415A77 ΔE 0.043
- Deep Sea Blue #015482 ΔE 0.044
- Light Navy #155084 ΔE 0.046
- Dark Slate Gray #2F4F4F ΔE 0.047
- Charcoal #264653 ΔE 0.049
- Deep Teal #00555A ΔE 0.049
- Light Navy Blue #2E5A88 ΔE 0.051
Use #2F506B 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.