#2D4E81
Closest named color: Light Navy (#155084). oklch(42.5% 0.094 258.8), rgb(45, 78, 129).
Aa
White text reads best on this color (8.33:1).
About this color
#2D4E81 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.094 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.019 away. White text reads best on it, at 8.33:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.51:1 |
| White text | 8.33:1 |
Values
| HEX | #2D4E81 |
| RGB | rgb(45, 78, 129) |
| HSL | hsl(216, 48%, 34%) |
| OKLCH | oklch(42.5% 0.094 258.8) |
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 #2D4E81 | 8.33:1 | AAA | Lc -93.2 | Preferred for body text |
| Black text on #2D4E81 | 2.51:1 | Fails | Lc 15.4 | Dividers and decoration only |
| #2D4E81 text on white | 8.33:1 | AAA | Lc 88.6 | Fine for body text |
| #2D4E81 text on black | 2.51:1 | Fails | Lc -13.6 | 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 800.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CDDAEE
oklch(88.5% 0.031 258.9)
-
Step 300
300
#ACC2E5
oklch(80.9% 0.055 259.6)
-
Step 400
400
#7FA2D7
oklch(70.7% 0.087 258.5)
-
Step 500
500
#5F8ACD
oklch(63.1% 0.112 259)
-
Step 600
600
#4573BA
oklch(55.7% 0.122 258.8)
-
Step 700
700
#3760A0
oklch(49.1% 0.113 259)
-
Step 800
800 (this color)
#2D4E81
oklch(42.5% 0.094 258.8)
-
Step 900
900
#294268
oklch(37.8% 0.072 258.5)
-
Step 950
950
#18273D
oklch(27.1% 0.046 257.8)
#2D4E81 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) | #385283 | 0.019 |
| Deuteranopia (no green cones) | #2C4A80 | 0.012 |
| Tritanopia (no blue cones) | #005A61 | 0.079 |
| Achromatopsia (no color) | #4E4E4E | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D4E81
#2D4E81
oklch(42.5% 0.094 258.8)
- #684700
#684700
oklch(42.4% 0.088 78.4)
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 #2D4E81, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.019
- Dusk Blue #26538D ΔE 0.022
- Deep Sea Blue #015482 ΔE 0.029
- Cobalt #1E488F ΔE 0.035
- Light Navy Blue #2E5A88 ΔE 0.036
- Twilight Blue #0A437A ΔE 0.048
- Denim Blue #3B5B92 ΔE 0.049
- Twilight #4E518B ΔE 0.049
Use #2D4E81 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.