#2D3E5B
Closest named color: Dark Grey Blue (#29465B). oklch(36.3% 0.055 260.7), rgb(45, 62, 91).
Aa
White text reads best on this color (10.75:1).
About this color
#2D3E5B is a dark, muted blue. In OKLCH its lightness is 36%, its chroma 0.055 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.026 away. White text reads best on it, at 10.75:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 1.95:1 |
| White text | 10.75:1 |
Values
| HEX | #2D3E5B |
| RGB | rgb(45, 62, 91) |
| HSL | hsl(218, 34%, 27%) |
| OKLCH | oklch(36.3% 0.055 260.7) |
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 #2D3E5B | 10.75:1 | AAA | Lc -98.8 | Preferred for body text |
| Black text on #2D3E5B | 1.95:1 | Fails | Lc 9.0 | Not readable |
| #2D3E5B text on white | 10.75:1 | AAA | Lc 94.9 | Preferred for body text |
| #2D3E5B text on black | 1.95:1 | Fails | Lc -7.7 | 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
#F3F5F9
oklch(97% 0.006 264.5)
-
Step 100
100
#E5EAF2
oklch(93.6% 0.012 259.8)
-
Step 200
200
#D1DAE9
oklch(88.6% 0.023 260.7)
-
Step 300
300
#B2C2DC
oklch(81% 0.041 260.1)
-
Step 400
400
#89A2CA
oklch(70.8% 0.065 259.7)
-
Step 500
500
#6C8ABD
oklch(63.1% 0.085 260.8)
-
Step 600
600
#5473A9
oklch(55.5% 0.092 261)
-
Step 700
700
#446191
oklch(49.2% 0.085 260.1)
-
Step 800
800
#384F76
oklch(42.7% 0.071 260.6)
-
Step 900
900 (this color)
#2D3E5B
oklch(36.3% 0.055 260.7)
-
Step 950
950
#1D2738
oklch(27.2% 0.035 260.8)
#2D3E5B 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) | #33405C | 0.011 |
| Deuteranopia (no green cones) | #2E3C5A | 0.006 |
| Tritanopia (no blue cones) | #1A4448 | 0.049 |
| Achromatopsia (no color) | #3E3E3E | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D3E5B
#2D3E5B
oklch(36.3% 0.055 260.7)
- #4D3B19
#4D3B19
oklch(36.4% 0.056 81.4)
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 #2D3E5B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.026
- Dark Blue Grey #1F3B4D ΔE 0.032
- Charcoal #264653 ΔE 0.034
- Prussian Blue #1D3557 ΔE 0.038
- Onyx #343A40 ΔE 0.046
- Midnight Green #073B4C ΔE 0.048
- Charcoal Grey #3C4142 ΔE 0.052
- Marine Blue #01386A ΔE 0.053
Use #2D3E5B 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.