#2B4A73
Closest named color: Light Navy (#155084). oklch(40.6% 0.079 255.9), rgb(43, 74, 115).
Aa
White text reads best on this color (9.01:1).
About this color
#2B4A73 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.079 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.032 away. White text reads best on it, at 9.01:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.32:1 |
| White text | 9.01:1 |
Values
| HEX | #2B4A73 |
| RGB | rgb(43, 74, 115) |
| HSL | hsl(214, 46%, 31%) |
| OKLCH | oklch(40.6% 0.079 255.9) |
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 #2B4A73 | 9.01:1 | AAA | Lc -95.0 | Preferred for body text |
| Black text on #2B4A73 | 2.32:1 | Fails | Lc 13.4 | Not readable |
| #2B4A73 text on white | 9.01:1 | AAA | Lc 90.5 | Preferred for body text |
| #2B4A73 text on black | 2.32:1 | Fails | Lc -11.8 | 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
#E4EAF3
oklch(93.5% 0.014 258.3)
-
Step 200
200
#CEDAEA
oklch(88.4% 0.026 255.6)
-
Step 300
300
#AEC2DF
oklch(80.8% 0.047 257.6)
-
Step 400
400
#82A3CE
oklch(70.7% 0.073 255.2)
-
Step 500
500
#638BC2
oklch(63% 0.095 256.5)
-
Step 600
600
#4975AE
oklch(55.6% 0.102 255.5)
-
Step 700
700
#3B6296
oklch(49.2% 0.095 256.1)
-
Step 800
800 (this color)
#2B4A73
oklch(40.6% 0.079 255.9)
-
Step 900
900
#2B4362
oklch(37.8% 0.061 255.3)
-
Step 950
950
#1A2739
oklch(27% 0.038 256.7)
#2B4A73 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) | #394D75 | 0.021 |
| Deuteranopia (no green cones) | #2F4672 | 0.012 |
| Tritanopia (no blue cones) | #005359 | 0.066 |
| Achromatopsia (no color) | #494949 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B4A73
#2B4A73
oklch(40.6% 0.079 255.9)
- #61420C
#61420C
oklch(40.4% 0.078 75.7)
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 #2B4A73, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.032
- Deep Sea Blue #015482 ΔE 0.039
- Twilight Blue #0A437A ΔE 0.039
- Dark Grey Blue #29465B ΔE 0.041
- Dusk Blue #26538D ΔE 0.046
- Cobalt #1E488F ΔE 0.049
- Light Navy Blue #2E5A88 ΔE 0.055
- Charcoal #264653 ΔE 0.055
Use #2B4A73 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.