#2D3C68
Closest named color: Twilight Blue (#0A437A). oklch(36.6% 0.079 268.2), rgb(45, 60, 104).
Aa
White text reads best on this color (10.72:1).
About this color
#2D3C68 is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.079 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.042 away. White text reads best on it, at 10.72:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 1.95:1 |
| White text | 10.72:1 |
Values
| HEX | #2D3C68 |
| RGB | rgb(45, 60, 104) |
| HSL | hsl(225, 40%, 29%) |
| OKLCH | oklch(36.6% 0.079 268.2) |
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 #2D3C68 | 10.72:1 | AAA | Lc -98.7 | Preferred for body text |
| Black text on #2D3C68 | 1.95:1 | Fails | Lc 9.2 | Not readable |
| #2D3C68 text on white | 10.72:1 | AAA | Lc 94.7 | Preferred for body text |
| #2D3C68 text on black | 1.95:1 | Fails | Lc -7.9 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF6
oklch(93.7% 0.017 267.8)
-
Step 200
200
#D0D9F0
oklch(88.6% 0.033 268.7)
-
Step 300
300
#B0C0E8
oklch(80.9% 0.059 267.9)
-
Step 400
400
#879FDC
oklch(70.8% 0.094 267.5)
-
Step 500
500
#6A85D2
oklch(63% 0.121 268.2)
-
Step 600
600
#536EC0
oklch(55.7% 0.131 268.2)
-
Step 700
700
#435BA5
oklch(49% 0.122 268.2)
-
Step 800
800
#374B86
oklch(42.7% 0.101 267.9)
-
Step 900
900 (this color)
#2D3C68
oklch(36.6% 0.079 268.2)
-
Step 950
950
#1C253F
oklch(27% 0.05 268.4)
#2D3C68 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) | #2A416A | 0.015 |
| Deuteranopia (no green cones) | #233B67 | 0.014 |
| Tritanopia (no blue cones) | #0F464D | 0.071 |
| Achromatopsia (no color) | #3E3E3E | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D3C68
#2D3C68
oklch(36.6% 0.079 268.2)
- #4F3C00
#4F3C00
oklch(36.7% 0.075 88.5)
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 #2D3C68, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.042
- Prussian Blue #1D3557 ΔE 0.042
- Marine Blue #01386A ΔE 0.043
- Dark Grey Blue #29465B ΔE 0.043
- Dark Blue Grey #1F3B4D ΔE 0.052
- Charcoal #264653 ΔE 0.055
- Midnight Green #073B4C ΔE 0.064
- Marine #042E60 ΔE 0.065
Use #2D3C68 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.