#2D3E55
Closest named color: Dark Grey Blue (#29465B). oklch(36% 0.046 256.1), rgb(45, 62, 85).
Aa
White text reads best on this color (10.87:1).
About this color
#2D3E55 is a dark, muted blue. In OKLCH its lightness is 36%, its chroma 0.046 and its hue 256°. 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 10.87:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 1.93:1 |
| White text | 10.87:1 |
Values
| HEX | #2D3E55 |
| RGB | rgb(45, 62, 85) |
| HSL | hsl(215, 31%, 25%) |
| OKLCH | oklch(36% 0.046 256.1) |
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 #2D3E55 | 10.87:1 | AAA | Lc -99.0 | Preferred for body text |
| Black text on #2D3E55 | 1.93:1 | Fails | Lc 8.8 | Not readable |
| #2D3E55 text on white | 10.87:1 | AAA | Lc 95.1 | Preferred for body text |
| #2D3E55 text on black | 1.93:1 | Fails | Lc -7.5 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E6EAF1
oklch(93.6% 0.01 261.8)
-
Step 200
200
#D1DAE6
oklch(88.5% 0.019 255.5)
-
Step 300
300
#B3C2D7
oklch(80.9% 0.034 256.8)
-
Step 400
400
#8BA3C3
oklch(70.8% 0.054 255.7)
-
Step 500
500
#6E8BB4
oklch(63% 0.07 257.1)
-
Step 600
600
#5575A0
oklch(55.6% 0.077 256)
-
Step 700
700
#466289
oklch(49.1% 0.071 256.8)
-
Step 800
800
#39506F
oklch(42.6% 0.059 256.1)
-
Step 900
900 (this color)
#2D3E55
oklch(36% 0.046 256.1)
-
Step 950
950
#1D2735
oklch(27% 0.03 256.9)
#2D3E55 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) | #353F56 | 0.013 |
| Deuteranopia (no green cones) | #313B55 | 0.011 |
| Tritanopia (no blue cones) | #1E4346 | 0.040 |
| Achromatopsia (no color) | #3D3D3D | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D3E55
#2D3E55
oklch(36% 0.046 256.1)
- #4B3A20
#4B3A20
oklch(36% 0.047 77)
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 #2D3E55, 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
- Dark Blue Grey #1F3B4D ΔE 0.025
- Charcoal #264653 ΔE 0.028
- Onyx #343A40 ΔE 0.036
- Prussian Blue #1D3557 ΔE 0.039
- Charcoal Grey #3C4142 ΔE 0.043
- Midnight Green #073B4C ΔE 0.043
- Gunmetal #293241 ΔE 0.047
Use #2D3E55 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.