#2F506A
Closest named color: Dark Grey Blue (#29465B). oklch(41.8% 0.058 243.6), rgb(47, 80, 106).
Aa
White text reads best on this color (8.47:1).
About this color
#2F506A is a dark, muted blue. In OKLCH its lightness is 42%, its chroma 0.058 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.038 away. White text reads best on it, at 8.47:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.47:1 |
| White text | 8.47:1 |
Values
| HEX | #2F506A |
| RGB | rgb(47, 80, 106) |
| HSL | hsl(206, 39%, 30%) |
| OKLCH | oklch(41.8% 0.058 243.6) |
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 #2F506A | 8.47:1 | AAA | Lc -93.6 | Preferred for body text |
| Black text on #2F506A | 2.47:1 | Fails | Lc 14.9 | Not readable |
| #2F506A text on white | 8.47:1 | AAA | Lc 89.1 | Fine for body text |
| #2F506A text on black | 2.47:1 | Fails | Lc -13.1 | 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
#AFC4D5
oklch(81% 0.033 242.4)
-
Step 400
400
#84A5C1
oklch(70.7% 0.055 244.3)
-
Step 500
500
#648FB1
oklch(63.2% 0.07 243)
-
Step 600
600
#4A789D
oklch(55.5% 0.077 244.1)
-
Step 700
700
#3B6586
oklch(49.1% 0.071 243.7)
-
Step 800
800 (this color)
#2F506A
oklch(41.8% 0.058 243.6)
-
Step 900
900
#2C4458
oklch(37.6% 0.046 244.6)
-
Step 950
950
#1A2834
oklch(27% 0.03 245.1)
#2F506A 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) | #45506B | 0.029 |
| Deuteranopia (no green cones) | #3D4A6A | 0.024 |
| Tritanopia (no blue cones) | #0C5659 | 0.048 |
| Achromatopsia (no color) | #4D4D4D | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F506A
#2F506A
oklch(41.8% 0.058 243.6)
- #634529
#634529
oklch(41.7% 0.059 63.1)
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 #2F506A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.038
- YInMn Blue #415A77 ΔE 0.043
- Deep Sea Blue #015482 ΔE 0.045
- Dark Slate Gray #2F4F4F ΔE 0.046
- Light Navy #155084 ΔE 0.047
- Charcoal #264653 ΔE 0.047
- Deep Teal #00555A ΔE 0.048
- Petrol #005F6A ΔE 0.052
Use #2F506A 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.