#2B4B68
Closest named color: Dark Grey Blue (#29465B). oklch(40.2% 0.062 247.3), rgb(43, 75, 104).
Aa
White text reads best on this color (9.09:1).
About this color
#2B4B68 is a dark, muted blue. In OKLCH its lightness is 40%, its chroma 0.062 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.025 away. White text reads best on it, at 9.09:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | muted (0.062) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.30:1 |
| White text | 9.09:1 |
Values
| HEX | #2B4B68 |
| RGB | rgb(43, 75, 104) |
| HSL | hsl(209, 41%, 29%) |
| OKLCH | oklch(40.2% 0.062 247.3) |
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 #2B4B68 | 9.09:1 | AAA | Lc -95.2 | Preferred for body text |
| Black text on #2B4B68 | 2.30:1 | Fails | Lc 13.2 | Not readable |
| #2B4B68 text on white | 9.09:1 | AAA | Lc 90.8 | Preferred for body text |
| #2B4B68 text on black | 2.30:1 | Fails | Lc -11.5 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CCDBEA
oklch(88.5% 0.026 248.1)
-
Step 300
300
#A9C4DE
oklch(80.9% 0.047 247.4)
-
Step 400
400
#7BA5CD
oklch(70.6% 0.075 247.7)
-
Step 500
500
#588EC0
oklch(63% 0.095 247.8)
-
Step 600
600
#3C78AD
oklch(55.7% 0.104 247.5)
-
Step 700
700
#2D6594
oklch(49.2% 0.096 246.7)
-
Step 800
800
#275278
oklch(42.6% 0.08 247.6)
-
Step 900
900 (this color)
#2B4B68
oklch(40.2% 0.062 247.3)
-
Step 950
950
#162839
oklch(27% 0.04 248.2)
#2B4B68 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) | #3F4C69 | 0.026 |
| Deuteranopia (no green cones) | #374667 | 0.020 |
| Tritanopia (no blue cones) | #015255 | 0.053 |
| Achromatopsia (no color) | #484848 | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B4B68
#2B4B68
oklch(40.2% 0.062 247.3)
- #5E4121
#5E4121
oklch(40.1% 0.062 67.2)
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 #2B4B68, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.025
- Charcoal #264653 ΔE 0.037
- Light Navy #155084 ΔE 0.047
- Deep Sea Blue #015482 ΔE 0.048
- Dark Slate Gray #2F4F4F ΔE 0.049
- Twilight Blue #0A437A ΔE 0.051
- Deep Teal #00555A ΔE 0.052
- Dark Teal #014D4E ΔE 0.058
Use #2B4B68 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.