#2B537E
Closest named color: Light Navy (#155084). oklch(43.4% 0.085 251.9), rgb(43, 83, 126).
Aa
White text reads best on this color (7.95:1).
About this color
#2B537E is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.085 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.023 away. White text reads best on it, at 7.95:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.64:1 |
| White text | 7.95:1 |
Values
| HEX | #2B537E |
| RGB | rgb(43, 83, 126) |
| HSL | hsl(211, 49%, 33%) |
| OKLCH | oklch(43.4% 0.085 251.9) |
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 #2B537E | 7.95:1 | AAA | Lc -92.1 | Preferred for body text |
| Black text on #2B537E | 2.64:1 | Fails | Lc 16.6 | Dividers and decoration only |
| #2B537E text on white | 7.95:1 | AAA | Lc 87.4 | Fine for body text |
| #2B537E text on black | 2.64:1 | Fails | Lc -14.7 | 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
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CCDBEB
oklch(88.5% 0.027 249.9)
-
Step 300
300
#AAC3E0
oklch(80.8% 0.049 252.3)
-
Step 400
400
#7CA4D1
oklch(70.6% 0.079 251.9)
-
Step 500
500
#5A8DC5
oklch(63.1% 0.101 251.8)
-
Step 600
600
#3F76B2
oklch(55.6% 0.111 252.2)
-
Step 700
700
#306399
oklch(49.1% 0.103 251.8)
-
Step 800
800 (this color)
#2B537E
oklch(43.4% 0.085 251.9)
-
Step 900
900
#264364
oklch(37.6% 0.067 252.8)
-
Step 950
950
#17283A
oklch(27.1% 0.041 250.8)
#2B537E 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) | #405580 | 0.026 |
| Deuteranopia (no green cones) | #354D7D | 0.019 |
| Tritanopia (no blue cones) | #005D62 | 0.069 |
| Achromatopsia (no color) | #515151 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B537E
#2B537E
oklch(43.4% 0.085 251.9)
- #6D4810
#6D4810
oklch(43.3% 0.085 72.1)
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 #2B537E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.023
- Deep Sea Blue #015482 ΔE 0.024
- Light Navy Blue #2E5A88 ΔE 0.025
- Dusk Blue #26538D ΔE 0.025
- YInMn Blue #415A77 ΔE 0.038
- Denim Blue #3B5B92 ΔE 0.043
- Dusk #4E5481 ΔE 0.045
- Cobalt #1E488F ΔE 0.049
Use #2B537E 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.