#2B4873
Closest named color: Light Navy (#155084). oklch(40.1% 0.081 258.1), rgb(43, 72, 115).
Aa
White text reads best on this color (9.22:1).
About this color
#2B4873 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.081 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.035 away. White text reads best on it, at 9.22:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.27:1 |
| White text | 9.22:1 |
Values
| HEX | #2B4873 |
| RGB | rgb(43, 72, 115) |
| HSL | hsl(216, 46%, 31%) |
| OKLCH | oklch(40.1% 0.081 258.1) |
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 #2B4873 | 9.22:1 | AAA | Lc -95.5 | Preferred for body text |
| Black text on #2B4873 | 2.27:1 | Fails | Lc 12.9 | Not readable |
| #2B4873 text on white | 9.22:1 | AAA | Lc 91.1 | Preferred for body text |
| #2B4873 text on black | 2.27:1 | Fails | Lc -11.2 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CCDAF0
oklch(88.5% 0.034 259.4)
-
Step 300
300
#A9C2E8
oklch(80.8% 0.061 258.7)
-
Step 400
400
#7AA2DD
oklch(70.6% 0.098 258)
-
Step 500
500
#588AD4
oklch(63.1% 0.125 258)
-
Step 600
600
#3D72C1
oklch(55.5% 0.136 258.3)
-
Step 700
700
#2F60A7
oklch(49.2% 0.126 257.9)
-
Step 800
800
#284E87
oklch(42.6% 0.104 258.4)
-
Step 900
900 (this color)
#2B4873
oklch(40.1% 0.081 258.1)
-
Step 950
950
#16273F
oklch(27.1% 0.05 257.1)
#2B4873 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) | #364B75 | 0.018 |
| Deuteranopia (no green cones) | #2C4472 | 0.012 |
| Tritanopia (no blue cones) | #005258 | 0.070 |
| Achromatopsia (no color) | #474747 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B4873
#2B4873
oklch(40.1% 0.081 258.1)
- #5F4104
#5F4104
oklch(39.9% 0.081 78.1)
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 #2B4873, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.035
- Twilight Blue #0A437A ΔE 0.035
- Dark Grey Blue #29465B ΔE 0.041
- Deep Sea Blue #015482 ΔE 0.042
- Cobalt #1E488F ΔE 0.048
- Dusk Blue #26538D ΔE 0.049
- Charcoal #264653 ΔE 0.056
- Light Navy Blue #2E5A88 ΔE 0.059
Use #2B4873 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.