#2D5581
Closest named color: Light Navy Blue (#2E5A88). oklch(44.2% 0.086 252.3), rgb(45, 85, 129).
Aa
White text reads best on this color (7.69:1).
About this color
#2D5581 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.086 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.017 away. White text reads best on it, at 7.69:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.72:1 |
| White text | 7.69:1 |
Values
| HEX | #2D5581 |
| RGB | rgb(45, 85, 129) |
| HSL | hsl(211, 48%, 34%) |
| OKLCH | oklch(44.2% 0.086 252.3) |
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 #2D5581 | 7.69:1 | AAA | Lc -91.3 | Preferred for body text |
| Black text on #2D5581 | 2.72:1 | Fails | Lc 17.5 | Dividers and decoration only |
| #2D5581 text on white | 7.69:1 | AAA | Lc 86.6 | Fine for body text |
| #2D5581 text on black | 2.72:1 | Fails | Lc -15.5 | Dividers and decoration only |
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
#E3EBF4
oklch(93.7% 0.015 251.2)
-
Step 200
200
#CCDBEC
oklch(88.5% 0.029 251.5)
-
Step 300
300
#AAC3E1
oklch(80.8% 0.051 253.1)
-
Step 400
400
#7CA4D2
oklch(70.7% 0.081 252.4)
-
Step 500
500
#5A8DC6
oklch(63.2% 0.102 252.2)
-
Step 600
600
#3F76B3
oklch(55.7% 0.112 252.6)
-
Step 700
700
#30639A
oklch(49.1% 0.104 252.2)
-
Step 800
800 (this color)
#2D5581
oklch(44.2% 0.086 252.3)
-
Step 900
900
#264364
oklch(37.6% 0.067 252.8)
-
Step 950
950
#17283B
oklch(27.2% 0.042 252.1)
#2D5581 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) | #425783 | 0.026 |
| Deuteranopia (no green cones) | #374F80 | 0.019 |
| Tritanopia (no blue cones) | #005F65 | 0.069 |
| Achromatopsia (no color) | #535353 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D5581
#2D5581
oklch(44.2% 0.086 252.3)
- #704A11
#704A11
oklch(44.2% 0.086 71.9)
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 #2D5581, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.017
- Dusk Blue #26538D ΔE 0.023
- Deep Sea Blue #015482 ΔE 0.027
- Light Navy #155084 ΔE 0.027
- YInMn Blue #415A77 ΔE 0.035
- Denim Blue #3B5B92 ΔE 0.036
- Dusk #4E5481 ΔE 0.041
- Twilight #4E518B ΔE 0.047
Use #2D5581 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.