#2B506D
Closest named color: Deep Sea Blue (#015482). oklch(41.7% 0.065 243.9), rgb(43, 80, 109).
Aa
White text reads best on this color (8.49:1).
About this color
#2B506D is a dark, muted blue. In OKLCH its lightness is 42%, its chroma 0.065 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.039 away. White text reads best on it, at 8.49:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.47:1 |
| White text | 8.49:1 |
Values
| HEX | #2B506D |
| RGB | rgb(43, 80, 109) |
| HSL | hsl(206, 43%, 30%) |
| OKLCH | oklch(41.7% 0.065 243.9) |
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 #2B506D | 8.49:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #2B506D | 2.47:1 | Fails | Lc 14.9 | Not readable |
| #2B506D text on white | 8.49:1 | AAA | Lc 89.1 | Fine for body text |
| #2B506D 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CEDBE6
oklch(88.5% 0.021 243.4)
-
Step 300
300
#ADC4D8
oklch(80.9% 0.038 244.5)
-
Step 400
400
#81A5C4
oklch(70.6% 0.06 244.8)
-
Step 500
500
#608FB5
oklch(63.1% 0.077 243.8)
-
Step 600
600
#4579A1
oklch(55.7% 0.084 243.3)
-
Step 700
700
#36658A
oklch(49% 0.079 244.2)
-
Step 800
800 (this color)
#2B506D
oklch(41.7% 0.065 243.9)
-
Step 900
900
#29455B
oklch(37.8% 0.051 243.4)
-
Step 950
950
#192835
oklch(27% 0.032 245.5)
#2B506D 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) | #43506E | 0.030 |
| Deuteranopia (no green cones) | #3B4A6C | 0.025 |
| Tritanopia (no blue cones) | #00575A | 0.052 |
| Achromatopsia (no color) | #4D4D4D | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B506D
#2B506D
oklch(41.7% 0.065 243.9)
- #654424
#654424
oklch(41.7% 0.065 63.5)
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 #2B506D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.039
- Dark Grey Blue #29465B ΔE 0.039
- Light Navy #155084 ΔE 0.041
- YInMn Blue #415A77 ΔE 0.045
- Deep Teal #00555A ΔE 0.049
- Light Navy Blue #2E5A88 ΔE 0.049
- Charcoal #264653 ΔE 0.050
- Dark Slate Gray #2F4F4F ΔE 0.051
Use #2B506D 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.