#2D405B
Closest named color: Dark Grey Blue (#29465B). oklch(36.8% 0.053 257.2), rgb(45, 64, 91).
Aa
White text reads best on this color (10.52:1).
About this color
#2D405B is a dark, muted blue. In OKLCH its lightness is 37%, its chroma 0.053 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.019 away. White text reads best on it, at 10.52:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 1.99:1 |
| White text | 10.52:1 |
Values
| HEX | #2D405B |
| RGB | rgb(45, 64, 91) |
| HSL | hsl(215, 34%, 27%) |
| OKLCH | oklch(36.8% 0.053 257.2) |
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 #2D405B | 10.52:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #2D405B | 1.99:1 | Fails | Lc 9.6 | Not readable |
| #2D405B text on white | 10.52:1 | AAA | Lc 94.3 | Preferred for body text |
| #2D405B text on black | 1.99:1 | Fails | Lc -8.2 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF2
oklch(93.6% 0.012 259.8)
-
Step 200
200
#D0DAE8
oklch(88.5% 0.022 256.7)
-
Step 300
300
#B1C2DB
oklch(80.9% 0.04 257.9)
-
Step 400
400
#88A2C8
oklch(70.6% 0.063 257.8)
-
Step 500
500
#6A8BBA
oklch(63.1% 0.081 257.2)
-
Step 600
600
#5175A7
oklch(55.7% 0.088 256.8)
-
Step 700
700
#42628F
oklch(49.2% 0.082 257)
-
Step 800
800
#365074
oklch(42.7% 0.068 256.7)
-
Step 900
900 (this color)
#2D405B
oklch(36.8% 0.053 257.2)
-
Step 950
950
#1C2737
oklch(27% 0.034 257.7)
#2D405B 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) | #36425C | 0.015 |
| Deuteranopia (no green cones) | #303D5A | 0.010 |
| Tritanopia (no blue cones) | #1A4649 | 0.048 |
| Achromatopsia (no color) | #3F3F3F | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D405B
#2D405B
oklch(36.8% 0.053 257.2)
- #4F3B1D
#4F3B1D
oklch(36.7% 0.053 76)
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 #2D405B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.019
- Charcoal #264653 ΔE 0.028
- Dark Blue Grey #1F3B4D ΔE 0.034
- Prussian Blue #1D3557 ΔE 0.043
- Onyx #343A40 ΔE 0.046
- Charcoal Grey #3C4142 ΔE 0.048
- Midnight Green #073B4C ΔE 0.050
- Marine Blue #01386A ΔE 0.057
Use #2D405B 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.