#2B4B7A
Closest named color: Light Navy (#155084). oklch(41.2% 0.088 257.9), rgb(43, 75, 122).
Aa
White text reads best on this color (8.78:1).
About this color
#2B4B7A 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 0.024 away. White text reads best on it, at 8.78:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.39:1 |
| White text | 8.78:1 |
Values
| HEX | #2B4B7A |
| RGB | rgb(43, 75, 122) |
| HSL | hsl(216, 48%, 32%) |
| OKLCH | oklch(41.2% 0.088 257.9) |
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 #2B4B7A | 8.78:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #2B4B7A | 2.39:1 | Fails | Lc 14.1 | Not readable |
| #2B4B7A text on white | 8.78:1 | AAA | Lc 89.9 | Fine for body text |
| #2B4B7A text on black | 2.39:1 | Fails | Lc -12.4 | 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
#ACC2E2
oklch(80.8% 0.051 257.7)
-
Step 400
400
#81A2D4
oklch(70.7% 0.082 258.5)
-
Step 500
500
#618BC9
oklch(63.2% 0.105 258)
-
Step 600
600
#4774B5
oklch(55.7% 0.113 257.6)
-
Step 700
700
#38619C
oklch(49.2% 0.106 257.6)
-
Step 800
800 (this color)
#2B4B7A
oklch(41.2% 0.088 257.9)
-
Step 900
900
#2A4266
oklch(37.7% 0.069 258.3)
-
Step 950
950
#19273B
oklch(27% 0.042 257.3)
#2B4B7A 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) | #374F7C | 0.020 |
| Deuteranopia (no green cones) | #2C4779 | 0.012 |
| Tritanopia (no blue cones) | #00565C | 0.075 |
| Achromatopsia (no color) | #4B4B4B | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B4B7A
#2B4B7A
oklch(41.2% 0.088 257.9)
- #644400
#644400
oklch(41.2% 0.086 78.2)
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 #2B4B7A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.024
- Deep Sea Blue #015482 ΔE 0.033
- Dusk Blue #26538D ΔE 0.035
- Twilight Blue #0A437A ΔE 0.039
- Cobalt #1E488F ΔE 0.039
- Light Navy Blue #2E5A88 ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.053
- Dusk #4E5481 ΔE 0.057
Use #2B4B7A 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.