#2A577C
Closest named color: Light Navy Blue (#2E5A88). oklch(44.2% 0.079 245.7), rgb(42, 87, 124).
Aa
White text reads best on this color (7.62:1).
About this color
#2A577C is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.079 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.021 away. White text reads best on it, at 7.62:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.75:1 |
| White text | 7.62:1 |
Values
| HEX | #2A577C |
| RGB | rgb(42, 87, 124) |
| HSL | hsl(207, 49%, 33%) |
| OKLCH | oklch(44.2% 0.079 245.7) |
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 #2A577C | 7.62:1 | AAA | Lc -91.1 | Preferred for body text |
| Black text on #2A577C | 2.75:1 | Fails | Lc 17.7 | Dividers and decoration only |
| #2A577C text on white | 7.62:1 | AAA | Lc 86.3 | Fine for body text |
| #2A577C text on black | 2.75:1 | Fails | Lc -15.8 | Dividers and decoration only |
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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CCDBE9
oklch(88.4% 0.025 246.2)
-
Step 300
300
#A9C4DD
oklch(80.8% 0.046 246.3)
-
Step 400
400
#7AA6CC
oklch(70.8% 0.073 245.2)
-
Step 500
500
#578FBF
oklch(63.1% 0.094 245.9)
-
Step 600
600
#3A78AB
oklch(55.5% 0.102 245.9)
-
Step 700
700
#2C6593
oklch(49.1% 0.095 245.9)
-
Step 800
800 (this color)
#2A577C
oklch(44.2% 0.079 245.7)
-
Step 900
900
#244560
oklch(37.8% 0.061 245.1)
-
Step 950
950
#162838
oklch(26.9% 0.038 246.6)
#2A577C 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) | #47587E | 0.034 |
| Deuteranopia (no green cones) | #3C507B | 0.026 |
| Tritanopia (no blue cones) | #006064 | 0.060 |
| Achromatopsia (no color) | #545454 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A577C
#2A577C
oklch(44.2% 0.079 245.7)
- #71491E
#71491E
oklch(44.2% 0.079 64.9)
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 #2A577C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.021
- Deep Sea Blue #015482 ΔE 0.028
- YInMn Blue #415A77 ΔE 0.029
- Light Navy #155084 ΔE 0.033
- Dusk Blue #26538D ΔE 0.033
- Denim Blue #3B5B92 ΔE 0.042
- Dusk #4E5481 ΔE 0.046
- Denim #3B638C ΔE 0.047
Use #2A577C 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.