#2D3E63
Closest named color: Dark Grey Blue (#29465B). oklch(36.8% 0.068 264.6), rgb(45, 62, 99).
Aa
White text reads best on this color (10.60:1).
About this color
#2D3E63 is a dark, muted blue. In OKLCH its lightness is 37%, its chroma 0.068 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.032 away. White text reads best on it, at 10.60:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 1.98:1 |
| White text | 10.60:1 |
Values
| HEX | #2D3E63 |
| RGB | rgb(45, 62, 99) |
| HSL | hsl(221, 38%, 28%) |
| OKLCH | oklch(36.8% 0.068 264.6) |
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 #2D3E63 | 10.60:1 | AAA | Lc -98.5 | Preferred for body text |
| Black text on #2D3E63 | 1.98:1 | Fails | Lc 9.4 | Not readable |
| #2D3E63 text on white | 10.60:1 | AAA | Lc 94.5 | Preferred for body text |
| #2D3E63 text on black | 1.98:1 | Fails | Lc -8.1 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#D0D9EC
oklch(88.4% 0.028 265.4)
-
Step 300
300
#B0C1E2
oklch(80.9% 0.05 263.7)
-
Step 400
400
#87A0D4
oklch(70.6% 0.082 264.5)
-
Step 500
500
#6A88C9
oklch(63.1% 0.104 264.7)
-
Step 600
600
#5271B5
oklch(55.6% 0.112 264.5)
-
Step 700
700
#425E9C
oklch(49% 0.105 264.5)
-
Step 800
800
#374D7F
oklch(42.7% 0.088 265)
-
Step 900
900 (this color)
#2D3E63
oklch(36.8% 0.068 264.6)
-
Step 950
950
#1C263C
oklch(27.1% 0.044 265)
#2D3E63 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) | #304165 | 0.011 |
| Deuteranopia (no green cones) | #293C62 | 0.009 |
| Tritanopia (no blue cones) | #14464C | 0.060 |
| Achromatopsia (no color) | #3F3F3F | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D3E63
#2D3E63
oklch(36.8% 0.068 264.6)
- #503C0C
#503C0C
oklch(36.9% 0.068 84.6)
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 #2D3E63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.032
- Prussian Blue #1D3557 ΔE 0.041
- Charcoal #264653 ΔE 0.044
- Dark Blue Grey #1F3B4D ΔE 0.044
- Twilight Blue #0A437A ΔE 0.046
- Marine Blue #01386A ΔE 0.047
- Midnight Green #073B4C ΔE 0.058
- Onyx #343A40 ΔE 0.060
Use #2D3E63 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.