#2D4A66
Closest named color: Dark Grey Blue (#29465B). oklch(39.9% 0.059 248.7), rgb(45, 74, 102).
Aa
White text reads best on this color (9.19:1).
About this color
#2D4A66 is a dark, muted blue. In OKLCH its lightness is 40%, its chroma 0.059 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.022 away. White text reads best on it, at 9.19:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.28:1 |
| White text | 9.19:1 |
Values
| HEX | #2D4A66 |
| RGB | rgb(45, 74, 102) |
| HSL | hsl(209, 39%, 29%) |
| OKLCH | oklch(39.9% 0.059 248.7) |
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 #2D4A66 | 9.19:1 | AAA | Lc -95.5 | Preferred for body text |
| Black text on #2D4A66 | 2.28:1 | Fails | Lc 12.9 | Not readable |
| #2D4A66 text on white | 9.19:1 | AAA | Lc 91.1 | Preferred for body text |
| #2D4A66 text on black | 2.28:1 | Fails | Lc -11.2 | 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 900.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CDDBE9
oklch(88.5% 0.025 248.1)
-
Step 300
300
#ABC4DD
oklch(81% 0.045 248.4)
-
Step 400
400
#7EA5CB
oklch(70.7% 0.07 248.2)
-
Step 500
500
#5C8EBE
oklch(63.1% 0.091 248.5)
-
Step 600
600
#4177AA
oklch(55.5% 0.098 248.8)
-
Step 700
700
#336492
oklch(49.1% 0.091 248.8)
-
Step 800
800
#2B5277
oklch(42.8% 0.076 248.9)
-
Step 900
900 (this color)
#2D4A66
oklch(39.9% 0.059 248.7)
-
Step 950
950
#172838
oklch(27% 0.038 247.9)
#2D4A66 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) | #3E4B67 | 0.023 |
| Deuteranopia (no green cones) | #374565 | 0.018 |
| Tritanopia (no blue cones) | #0D5154 | 0.051 |
| Achromatopsia (no color) | #484848 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D4A66
#2D4A66
oklch(39.9% 0.059 248.7)
- #5C4122
#5C4122
oklch(39.8% 0.059 68.5)
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 #2D4A66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.022
- Charcoal #264653 ΔE 0.035
- Dark Slate Gray #2F4F4F ΔE 0.047
- Light Navy #155084 ΔE 0.051
- Deep Sea Blue #015482 ΔE 0.052
- Twilight Blue #0A437A ΔE 0.053
- Deep Teal #00555A ΔE 0.053
- Dark Teal #014D4E ΔE 0.058
Use #2D4A66 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.