#2F5578
Closest named color: Light Navy Blue (#2E5A88). oklch(43.8% 0.073 248), rgb(47, 85, 120).
Aa
White text reads best on this color (7.80:1).
About this color
#2F5578 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.073 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.027 away. White text reads best on it, at 7.80:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.69:1 |
| White text | 7.80:1 |
Values
| HEX | #2F5578 |
| RGB | rgb(47, 85, 120) |
| HSL | hsl(209, 44%, 33%) |
| OKLCH | oklch(43.8% 0.073 248) |
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 #2F5578 | 7.80:1 | AAA | Lc -91.7 | Preferred for body text |
| Black text on #2F5578 | 2.69:1 | Fails | Lc 17.1 | Dividers and decoration only |
| #2F5578 text on white | 7.80:1 | AAA | Lc 86.9 | Fine for body text |
| #2F5578 text on black | 2.69:1 | Fails | Lc -15.2 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CDDBE8
oklch(88.5% 0.023 246.1)
-
Step 300
300
#ACC4DB
oklch(81% 0.042 247.2)
-
Step 400
400
#7FA5C9
oklch(70.7% 0.067 247.4)
-
Step 500
500
#5E8EBC
oklch(63.1% 0.087 248.3)
-
Step 600
600
#4378A8
oklch(55.7% 0.094 247.6)
-
Step 700
700
#346490
oklch(49% 0.088 248.2)
-
Step 800
800 (this color)
#2F5578
oklch(43.8% 0.073 248)
-
Step 900
900
#28445E
oklch(37.7% 0.056 247.8)
-
Step 950
950
#182837
oklch(27% 0.035 247.7)
#2F5578 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) | #46567A | 0.029 |
| Deuteranopia (no green cones) | #3C4F77 | 0.022 |
| Tritanopia (no blue cones) | #005D61 | 0.060 |
| Achromatopsia (no color) | #525252 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F5578
#2F5578
oklch(43.8% 0.073 248)
- #6C4A21
#6C4A21
oklch(43.8% 0.073 68.9)
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 #2F5578, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.027
- YInMn Blue #415A77 ΔE 0.028
- Deep Sea Blue #015482 ΔE 0.032
- Light Navy #155084 ΔE 0.035
- Dusk Blue #26538D ΔE 0.037
- Dusk #4E5481 ΔE 0.044
- Denim Blue #3B5B92 ΔE 0.047
- Dusty Grape #545775 ΔE 0.050
Use #2F5578 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.