#2A4E80
Closest named color: Light Navy (#155084). oklch(42.3% 0.094 257), rgb(42, 78, 128).
Aa
White text reads best on this color (8.40:1).
About this color
#2A4E80 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.094 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.017 away. White text reads best on it, at 8.40:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.49:1 |
| White text | 8.40:1 |
Values
| HEX | #2A4E80 |
| RGB | rgb(42, 78, 128) |
| HSL | hsl(215, 51%, 33%) |
| OKLCH | oklch(42.3% 0.094 257) |
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 #2A4E80 | 8.40:1 | AAA | Lc -93.3 | Preferred for body text |
| Black text on #2A4E80 | 2.49:1 | Fails | Lc 15.2 | Dividers and decoration only |
| #2A4E80 text on white | 8.40:1 | AAA | Lc 88.7 | Fine for body text |
| #2A4E80 text on black | 2.49:1 | Fails | Lc -13.4 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EAF5
oklch(93.5% 0.017 259.4)
-
Step 200
200
#CDDAEE
oklch(88.5% 0.031 258.9)
-
Step 300
300
#ABC3E4
oklch(81% 0.054 256.4)
-
Step 400
400
#7DA3D7
oklch(70.8% 0.087 256.4)
-
Step 500
500
#5C8BCC
oklch(63.1% 0.111 256.7)
-
Step 600
600
#4274B9
oklch(55.7% 0.121 256.8)
-
Step 700
700
#3361A0
oklch(49.2% 0.113 256.8)
-
Step 800
800 (this color)
#2A4E80
oklch(42.3% 0.094 257)
-
Step 900
900
#274268
oklch(37.7% 0.073 257.1)
-
Step 950
950
#17273D
oklch(27% 0.047 256.6)
#2A4E80 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) | #385282 | 0.021 |
| Deuteranopia (no green cones) | #2C4A7F | 0.012 |
| Tritanopia (no blue cones) | #005961 | 0.075 |
| Achromatopsia (no color) | #4D4D4D | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A4E80
#2A4E80
oklch(42.3% 0.094 257)
- #684600
#684600
oklch(42.2% 0.088 77.2)
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 #2A4E80, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.017
- Dusk Blue #26538D ΔE 0.024
- Deep Sea Blue #015482 ΔE 0.026
- Cobalt #1E488F ΔE 0.035
- Light Navy Blue #2E5A88 ΔE 0.037
- Twilight Blue #0A437A ΔE 0.045
- Denim Blue #3B5B92 ΔE 0.051
- Dusk #4E5481 ΔE 0.052
Use #2A4E80 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.