#2F5771
Closest named color: YInMn Blue (#415A77). oklch(43.9% 0.062 238.9), rgb(47, 87, 113).
Aa
White text reads best on this color (7.71:1).
About this color
#2F5771 is a dark, muted blue. In OKLCH its lightness is 44%, its chroma 0.062 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.026 away. White text reads best on it, at 7.71:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | muted (0.062) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.72:1 |
| White text | 7.71:1 |
Values
| HEX | #2F5771 |
| RGB | rgb(47, 87, 113) |
| HSL | hsl(204, 41%, 31%) |
| OKLCH | oklch(43.9% 0.062 238.9) |
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 #2F5771 | 7.71:1 | AAA | Lc -91.4 | Preferred for body text |
| Black text on #2F5771 | 2.72:1 | Fails | Lc 17.4 | Dividers and decoration only |
| #2F5771 text on white | 7.71:1 | AAA | Lc 86.7 | Fine for body text |
| #2F5771 text on black | 2.72:1 | Fails | Lc -15.4 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CEDBE5
oklch(88.5% 0.02 240.8)
-
Step 300
300
#ACC4D6
oklch(80.8% 0.036 240.4)
-
Step 400
400
#7FA6C1
oklch(70.6% 0.058 238.9)
-
Step 500
500
#5D90B2
oklch(63.1% 0.075 238.8)
-
Step 600
600
#427A9E
oklch(55.6% 0.082 238.8)
-
Step 700
700
#346687
oklch(49% 0.076 239.7)
-
Step 800
800 (this color)
#2F5771
oklch(43.9% 0.062 238.9)
-
Step 900
900
#284559
oklch(37.7% 0.049 240)
-
Step 950
950
#182934
oklch(27.1% 0.031 237.8)
#2F5771 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) | #4B5772 | 0.035 |
| Deuteranopia (no green cones) | #425071 | 0.029 |
| Tritanopia (no blue cones) | #005E60 | 0.050 |
| Achromatopsia (no color) | #535353 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F5771
#2F5771
oklch(43.9% 0.062 238.9)
- #6C4A2E
#6C4A2E
oklch(44% 0.062 59.6)
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 #2F5771, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.026
- Light Navy Blue #2E5A88 ΔE 0.037
- Petrol #005F6A ΔE 0.039
- Deep Sea Blue #015482 ΔE 0.042
- Light Navy #155084 ΔE 0.048
- Dusty Grape #545775 ΔE 0.049
- Dusk #4E5481 ΔE 0.051
- Dusk Blue #26538D ΔE 0.052
Use #2F5771 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.