#2B4A79
Closest named color: Light Navy (#155084). oklch(40.9% 0.088 258.5), rgb(43, 74, 121).
Aa
White text reads best on this color (8.90:1).
About this color
#2B4A79 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.088 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.026 away. White text reads best on it, at 8.90:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.35:1 |
| White text | 8.90:1 |
Values
| HEX | #2B4A79 |
| RGB | rgb(43, 74, 121) |
| HSL | hsl(216, 48%, 32%) |
| OKLCH | oklch(40.9% 0.088 258.5) |
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 #2B4A79 | 8.90:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #2B4A79 | 2.35:1 | Fails | Lc 13.8 | Not readable |
| #2B4A79 text on white | 8.90:1 | AAA | Lc 90.2 | Preferred for body text |
| #2B4A79 text on black | 2.35:1 | Fails | Lc -12.1 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF4
oklch(93.5% 0.015 260.7)
-
Step 200
200
#CEDAEC
oklch(88.5% 0.028 258.4)
-
Step 300
300
#ADC2E2
oklch(80.9% 0.051 258.7)
-
Step 400
400
#81A2D4
oklch(70.7% 0.082 258.5)
-
Step 500
500
#618AC8
oklch(63% 0.105 258.4)
-
Step 600
600
#4873B5
oklch(55.5% 0.114 258.7)
-
Step 700
700
#39609C
oklch(49% 0.107 258.7)
-
Step 800
800 (this color)
#2B4A79
oklch(40.9% 0.088 258.5)
-
Step 900
900
#2A4266
oklch(37.7% 0.069 258.3)
-
Step 950
950
#19273B
oklch(27% 0.042 257.3)
#2B4A79 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) | #364E7B | 0.019 |
| Deuteranopia (no green cones) | #2B4678 | 0.012 |
| Tritanopia (no blue cones) | #00555B | 0.075 |
| Achromatopsia (no color) | #4A4A4A | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B4A79
#2B4A79
oklch(40.9% 0.088 258.5)
- #634300
#634300
oklch(40.9% 0.085 77.9)
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 #2B4A79, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.026
- Deep Sea Blue #015482 ΔE 0.035
- Twilight Blue #0A437A ΔE 0.036
- Dusk Blue #26538D ΔE 0.038
- Cobalt #1E488F ΔE 0.040
- Light Navy Blue #2E5A88 ΔE 0.051
- Dark Grey Blue #29465B ΔE 0.051
- Dusk #4E5481 ΔE 0.059
Use #2B4A79 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.